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The Production of Compost from Organic Wastes using Bioactivators and Its Application to Celery (Apium graveolens L.) Plant Sri Indrayani; Nuriyanah Nuriyanah; Lisyeu Nurjanah; Heru Wibowo; Dody Priadi
Jurnal Ilmu Lingkungan Vol 19, No 2 (2021): Agustus 2021
Publisher : School of Postgraduate Studies, Diponegoro Univer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jil.19.2.479-484

Dilakukan pembuatan pupuk kompos dari limbah Jerami padi sawah percobaan dan seresah daun tanaman buah-buahan kebun plasma nutfah Cibinong Science Center-Botanic Garden (CSC-BG) LIPI menggunakan bioaktivator StarTmik@OK dan Tricho Plus (LIPI) dan Promi (produk komersial). Kompos yang dihasilkan diaplikasikan kepada tanaman seledri (Apium graveolens L.) di rumah kasa (screenhouse) Puslit Bioteknologi-LIPI Cibinong, Kabupaten Bogor, Jawa Barat. Parameter pertumbuhan yang diamati adalah tinggi tanaman, jumlah petiol daun, dan biomassa. Penelitian disusun berdasarkan Rancangan Acak Lengkap (RAL) dengan tiga ulangan. Data hasil penelitian dianalisis secara statistik menggunakan SPSS ver. 24 dilanjutkan dengan uji jarak berganda Duncan (DMRT). Hasil menunjukkan bahwa secara umum kompos yang berasal dari jerami padi dengan menggunakan berbagai bioaktivator menghasilkan nilai rataan pertumbuhan tertinggi yaitu tinggi tanaman (35,7 cm), jumlah petiol (23,7), dan biomassa (42,3 g) dibandingkan dengan kompos yang menggunakan bahan lainnya. Penggunaan pupuk kimia masih diperlukan untuk meningkatkan pertumbuhan tanaman seledri.Abstract The organic waste of rice straw from the experimental paddy field and broadleaf litter from the fruit germplasm garden of Cibinong Science Center-Botanic Garden (CSC-BG) was processed into compost with the addition of bioactivators. The bioactivator of StarTmik@OK and Tricho Plus (LIPI) and Promi (commercial product) was added to the composting raw materials. Produced compost was then applied to celery (Apium graveolens L.) plants in the screenhouse of RD Center for Biotechnology-LIPI. The growth parameters observed were plant height, leaf petiole, and biomass. The experiment was arranged in a Completely Randomized Design (CRD) with three replications. Obtained data were statistically analyzed using SPSS ver.24, followed by Duncan’s multiple range tests (DMRT). The result showed that the highest growth rates, i.e., plant height (35.7 cm), number of petiol (23.7), dan biomass (42.3 g), were obtained by using rice straw compost using various bioactivators. Meanwhile, chemical fertilizer is still needed to increase the growth of celery plants.

Analisis Beban Pencemar Total Nitrogen dan Total Fosfat akibat Aktivitas Antropogenik di Danau Maninjau Roselyn Indah Kurniati; Puti Sri Komala; Z Zulkarnaini
Jurnal Ilmu Lingkungan Vol 19, No 2 (2021): Agustus 2021
Publisher : School of Postgraduate Studies, Diponegoro Univer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jil.19.2.355-364

Penelitian ini bertujuan untuk menganalisis beban pencemar dan daya tampung total nitrogen (TN) dan total fosfat (TP) akibat dari aktivitas antropogenik di Danau Maninjau. Perhitungan beban pencemar untuk aktivitas penduduk, pertanian, peternakan dan jumlah tamu hotel menggunakan Rapid Assesment. Penetapan beban pencemar KJA dan daya tampung yang mengacu kepada Peraturan Menteri Lingkungan Hidup No 28 Tahun 2009. Lokasi penelitian yang ditetapkan berdasarkan SNI 6989.57:2008 terdiri dari 10 lokasi yaitu tengah danau, PLTA, KJA, inlet dan outlet danau. Uji ANOVA dengan tingkat kepercayaan 95% digunakan dalam melihat perbedaan data konsentrasi TN dan TP secara waktu pengambilan sampel dan lokasi sampling. Rasio TN:TP dievaluasi untuk mengetahui pembatas kesuburan perairan dan korelasinya terhadap klorofil.Konsentrasi TN berada pada rentang 0,42 – 0,95 mg/L, TP berkisar 0,18-0,66 mg/L dan klorofil-a 5,49-8,69 mg/m3. Hasil uji ANOVA, konsentrasi TN dan TP secara waktu pengambilan sampel tidak berbeda secara signifikan yaitu 0,64 dan 0,88 sedangkan secara lokasi sampling berbeda secara signifikan dengan nilai signifikansi 0,01 dan 4,03x10-6. TN dan TP memiliki hubungan yang kuat terhadap klorofil dan diperoleh rasio TN:TP<10 yang mengindikasikan nitrogen sebagai pembatas kesuburan. Beban pencemar TN dan TP terbesar berasal dari KJA yang menyumbang hampir 84,20 % dan 91,83% dari total beban pencemar. Ditinjau dari daya tampung mesotrofik beban pencemar TN belum melebihi sedangkan TP telah melebihi daya tampung sehingga perlu pengurangan hingga 71,34% untuk mesotrofik dan 90,44% untuk oligotrofik. Secara keseluruhan status trofik Danau Maninjau berada pada kondisi eutrofik dengan index 63,39. ABSTRACTThis study aims to analyze the pollutant load and the capacity of total nitrogen (TN) and total phosphate (TP) resulting from anthropogenic activities in Lake Maninjau. Calculation of the pollutant load for the activities of the population, agriculture, livestock and the number of hotel guests using Rapid Assessment. Determination of KJA pollutant load and carrying capacity refers to the Regulation of the Minister of Environment No. 28 of 2009. The research locations determined based on SNI 6989.57: 2008 consist of 10 locations, namely the middle of the lake, hydropower plant, marine cage, inlet and outlet. ANOVA test with a 95% confidence level was used to see the differences in TN and TP concentration data in terms of sampling time and sampling location. The TN: TP ratio was evaluated to determine the limitation of water fertility and its correlation to chlorophyll. TN concentrations were in the range 0.42 - 0.95 mg / L, TP ranged from 0.18 to 0.66 mg / L and chlorophyll-a was 5.49. -8.69 mg / m3. ANOVA test results, TN and TP concentrations at sampling time did not differ significantly, namely 0.64 and 0.88, while the sampling location was significantly different with a significance value of 0.01 and 4.03x10-6. TN and TP had a strong relationship to chlorophyll and the TN: TP ratio was obtained <10, which indicates nitrogen as a fertility limiter. The largest TN and TP pollutant load comes from KJA which accounts for almost 84.20% and 91.83% of the total pollutant load. Judging from the mesotrophic capacity of the TN pollutant load has not exceeded while the TP has exceeded the capacity so that it needs a reduction of up to 71.34% for mesotrophic and 90.44% for oligotrophic. Overall, the trophic status of Lake Maninjau is in a eutrophic condition with an index of 63.39.

Penggunaan Cocopeat Sebagai Pengganti Topsoil Dalam Upaya Perbaikan Kualitas Lingkungan di Lahan Pascatambang di Desa Toba, Kabupaten Sanggau Wafa Shafira; Aji Ali Akbar; Ochih Saziati
Jurnal Ilmu Lingkungan Vol 19, No 2 (2021): Agustus 2021
Publisher : School of Postgraduate Studies, Diponegoro Univer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jil.19.2.432-443

PT. Dinamika Sejahtera Mandiri (PT. DSM) merupakan perusahaan swasta yang bergerak di bidang pertambangan bauksit dengan sistem penambangan terbuka, sehingga menghasilkan hamparan tanah dengan kandungan bahan organik dan unsur hara sangat rendah serta toksik tinggi sehingga lahan menjadi kritis. Upaya perbaikan lingkungan dilakukan dengan rehabilitasi lahan agar tidak menimbulkan kerusakan berkelanjutan. PT. DSM menggunakan penambahan biostimulan dalam rehabilitasi lahan, namun karena biaya yang mahal maka dilakukan alternatif menggunakan cocopeat sebagai pengganti topsoil dengan biaya terjangkau. Lokasi penelitian terletak di lahan pascatambang bauksit milik PT. DSM yang berada di Desa Teraju, Kecamatan Toba, Kabupaten Sanggau, Provinsi Kalimantan Barat. Total sampel tanah yang diuji sebanyak 23 sampel, terdiri dari 5 perlakuan dengan masing-masing perlakuan dilakukan pengulangan sebanyak 3 kali, yaitu perlakuan A tanpa perlakuan di lahan dengan topsoil, perlakuan B tanpa perlakuan di lahan tanpa topsoil, perlakuan C 100% cocopeat, perlakuan D 50% cocopeat + 25% arang sekam + 25% kotoran ayam dan perlakuan E 60% cocopeat + 25% arang sekam + 15% kotoran ayam. Hasil penelitian menunjukan kandungan parameter pH, % C- organik, KTK, dan N total dalam media tanam cocopeat memiliki kandungan yang lebih baik daripada topsoil dan tanah pascatambang, namun parameter P2O5, kadar debu, liat, dan pasir, topsoil memiliki kandungan yang lebih baik daripada cocopeat dan tanah pascatambang. Kandungan parameter fisik dan kimia terendah terdapat pada tanah pascatambang. Komposisi media tanam kombinasi cocopeat, arang sekam, dan kotoran ayam memiliki pengaruh yang baik terhadap pertumbuhan tanaman sengon karena memiliki unsur hara yang lebih baik dibandingkan dengan topsoil, tanpa topsoil atau hanya cocopeat saja. Dosis variasi paling optimal dalam pertumbuhan sengon dari segi pertumbuhan fisik tanaman yaitu pada variasi perlakuan kode tanam D, yaitu memiliki pertambahan tinggi tanaman rata-rata 13,7cm dan cabang daun sebanyak 6 helai yang lebih signifikan dibandingkan perlakuan media tanam lainnya. AbstractPT. Dinamika Sejahtera Mandiri (PT. DSM) is a private company engaged in bauxite mining with an open mining system, resulting in a stretch of land with very low organic and nutrient content and high toxicity so that the land becomes critical. Efforts to improve the environment are carried out by rehabilitating land so as not to cause sustainable damage. PT. DSM uses biostimulants in land rehabilitation, but an alternative is to use cocopeat as a substitute for topsoil at an affordable price because of the high cost. The research location is located on the bauxite post-mining land owned by PT. DSM is located in Teraju Village, Toba District, Sanggau Regency, West Kalimantan Province. Total soil samples tested were 23 samples, consisting of 5 treatments with each treatment being repeated three times, namely treatment A without treatment on land with topsoil, treatment B without treatment on the ground without topsoil, treatment C 100% cocopeat, treatment D 50% cocopeat + 25% husk charcoal + 25% chicken manure and treatment E 60% cocopeat + 25% husk charcoal + 15% chicken manure. The results showed that the pH,% C- organic, CEC, and total N content in the cocopeat growing medium had a better range than topsoil and post-mining soil. Still, the P2O5 parameters, the content of dust, clay, and sand, topsoil had better content. Then cocopeat and post-mining land. The lowest range of physical and chemical parameters is found in post-mining soil. The composition of the planting medium combination of cocopeat, husk charcoal, and chicken manure has a good effect on the growth of Sengon plants because it has better nutrients than topsoil, without topsoil, or just cocopeat. The most optimal dose of variation in the evolution of Sengon in terms of physical plant growth is the variation in the treatment of planting code D, which has an average plant height increase of 13.7 cm and six-leaf branches, which is more significant than the treatment of other growing media.

Usulan strategi pengelolaan sampah padat di TPA Burangkeng Bekasi dengan pendekatan SWOT dan AHP Dino Rimantho; Marlina Tamba
Jurnal Ilmu Lingkungan Vol 19, No 2 (2021): Agustus 2021
Publisher : School of Postgraduate Studies, Diponegoro Univer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jil.19.2.383-391

Penetepan strategi pengelolaan sampah dilakukan sebagai upaya untuk mengurangi laju timbulan sampah di TPA Burangkeng Kabupaten Bekasi. Tujuan penelitian ini adalah mengidentifikasi faktor internal dan eksternal yang menjadi kekuatan, kelemahan, peluang dan ancaman bagi TPA Burangkeng, kemudian merumuskan alternatif strategi pengembangannya. Metode penelitian menggunakan analisis SWOT (Strength, Weakness, Opportunity, Threath) dan AHP (Analitical Hierarchy Process). Berdasarkan hasil analisis SWOT terhadap faktor internal dan eksternal TPA Burangkeng, diperoleh alternatif strategi bagi pengembangan kebijakan operasional, yakni strategi perencanaan SDM, strategi perbaikan metode dan teknologi, serta strategi pengadaan sarana dan alat. Hasil perumusan strategi dari analisis SWOT tersebut kemudian ditentukan prioritasnya dengan menggunakan AHP. Berdasarkan hasil penelitian dengan metode AHP diketahui kriteria utama yang perlu diperhatikan dalam pengembangan adalah kriteria teknologi dengan bobot prioritas sebesar 0,371, dan sub-kriteria untuk pencapaian teknologi adalah melalui inovasi pengelolaan dengan bobot sebesar 0,325. Sehingga strategi pengembangan yang didapat adalah melalui strategi perbaikan metode dan teknologi pengelolaan, dengan bobot prioritas sebesar 0,540.ABSTRACTThe determination of a waste management strategy is carried out as an effort to reduce the rate of waste generation in the TPA Burangkeng, Bekasi Regency. The purpose of this research is to identify internal and external factors which are the strengths, weaknesses, opportunities and threats of TPA Burangkeng, then formulate alternative development strategies. The research method uses SWOT analysis (Strength, Weakness, Opportunity, Threath) and AHP (Analytical Hierarchy Process). Based on the results of the SWOT analysis on the internal and external factors of the Burangkeng TPA, an alternative strategy was obtained for the development of operational policies, namely the HR planning strategy, the strategy for improving methods and technology, and the strategy for the procurement of facilities and tools. The results of the strategy formulation from the SWOT analysis are then prioritized using AHP. Based on the results of research with the AHP method, it is known that the main criteria that need to be considered in development are technology criteria with a priority weight of 0.371, and the sub-criteria for technological achievement is through management innovation with a weight of 0.325. Thus, that the development strategy obtained is through a strategy to improve management methods and technology, with a priority weight of 0.540.

Dampak Pemberian Pupuk Hayati dan NPK Terhadap Emisi CO2 Pada Perkebunan Kelapa Sawit Di Lahan Gambut Dika Riyani; Evi Gusmayanti; Muhammad Pramulya
Jurnal Ilmu Lingkungan Vol 19, No 2 (2021): Agustus 2021
Publisher : School of Postgraduate Studies, Diponegoro Univer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jil.19.2.219-226

Pemanfaatan lahan gambut untuk perkebunan kelapa sawit selalu disertai dengan pemupukan, seperti pupuk hayati dan NPK. Namun kegiatan pemupukan ini berpotensi meningkatkan aktivitas mikroorganisme dalam mendekomposisi bahan organik gambut yang selanjutnya menghasilkan emisi CO2. Penelitian ini bertujuan untuk mengukur emisi CO2 sebelum dan sesudah pemupukan hayati dan NPK dari perkebunan kelapa sawit fase belum menghasilkan (umur tanaman 3 tahun) dan fase menghasilkan (umur tanaman 12 tahun). Penelitian ini dilaksanakan pada perkebunan kelapa sawit di Kalimantan Barat. Emisi CO2 yang diukur pada enam belas subplot dengan metode sungkup tertutup menggunakan sensor CO2 Vaisala GMP343. Pengukuran emisi CO2 dilakukan seminggu sekali dari bulan Agustus sampai Oktober 2020. Bersamaan dengan pengukuran emisi CO2 dilakukan pengukuran suhu tanah, suhu udara dan kedalaman muka air tanah yang diikuti pengambilan sampel tanah untuk analisis pH, Eh dan kadar air gravimetrik. Pengambilan sampel tanah terganggu untuk analisis kesuburan gambut dilakukan sebanyak tiga kali yaitu seminggu sebelum pengukuran emisi CO2, setelah aplikasi pupuk hayati dan setelah aplikasi pupuk NPK. Hasil penelitian menunjukan emisi CO2 sebelum dan sesudah pemupukan tidak berbeda nyata. Rerata emisi CO2 setelah pemupukan hayati cenderung lebih rendah dan kembali meningkat setelah pemupukan NPK. Besaran emisi CO2 pada tanaman belum menghasilkan sebelum pemupukan sebesar 0,65 ± 0,36 g CO2 m-2 jam-1, setelah pemupukan hayati sebesar 0,56 ± 0,28 g CO2 m-2 jam-1 dan setelah pemupukan NPK sebesar 0,60 ± 0,32 g CO2 m-2 jam-1. Sedangkan rerata emisi CO2 pada lokasi tanaman menghasilkan sebelum pemupukan yaitu 0,53 ± 0,24 g CO2 m-2 jam-1, setelah pemupukan hayati 0,38 ± 0,18 g CO2 m-2 jam-1 dan setelah pemupukan NPK meningkat menjadi 0,66 ± 0,43 g CO2 m-2 jam-1.ABSTRACTFertilization is a common practice when utilizing peatlands for oil palm plantation. It includes bio fertilizer and compound NPK fertilizer. However, fertilization may potentially increase microorganism activities leading to higher CO2 emission. This study aims to measure CO2 emissions before and after application of bio fertilizer and compound NPK fertilizer to oil palm plantations. This research was conducted on palm plantations in West Kalimantan. There are two plots of measurements i.e. immature oil palm, about 3 years of age and producing oil palm about 12 years of age, and every plot consists eight subplots. The measurement of CO2 emissions carried out according to closed chamber method using Vaisala GMP343 CO2 sensor once a week from August to October 2020. Along with measurement of CO2 emissions, environmental factors were also measured, i.e. soil temperature, air temperature and groundwater level, pH, Eh and gravimetric water content. Sampling of disturbed soil for peat fertility analysis was carried out three times, a week before measuring CO2 emissions, after application of bio-fertilizers and after application of compound NPK fertilizer. The results showed that CO2 emissions before and after fertilization were not significantly different. The average CO2 emission after biological fertilization tends to be lower than that before fertilizer application and tend to increase after NPK fertilization. The amount of CO2 emission in immature plot before fertilization is 0,65 ± 0,36 g CO2 m-2 hour-1, after biological fertilization is 0,56 ± 0,28 g CO2 m-2 hour-1 and after NPK fertilization is 0,60 ± 0,32 g CO2 m-2 hour-1. Meanwhile, the average CO2 emission at the location of the plant produced before fertilization was 0,53 ± 0,24 g CO2 m-2 hour-1, after biological fertilization was 0,38 ± 0,18 g CO2 m-2 hour-1 and after NPK fertilization increased to 0,66 ± 0,43 g CO2 m-2 hour-1.

Effect of Land Clearing Activity on Environmental and Arthropods Diversity (Case Study: Jati Agung, Lampung) David Septian Sumanto Marpaung; Nova Anika; Yazid Bindar
Jurnal Ilmu Lingkungan Vol 19, No 2 (2021): Agustus 2021
Publisher : School of Postgraduate Studies, Diponegoro Univer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jil.19.2.444-449

Agricultural activity relies on soil as their growth media. Besides agricultural activity, other living species also needs soil as their ecosystem. However, the biodiversity and environmental factor are often neglected in agricultural activity. Therefore, the investigation of environmental and biodiversity changes is important. In this study, the environmental parameter and biodiversity changes was investigated in area after land clearing activity. The pH was increased from in 3 times measurement. Besides, the soil temperature and air temperature was also increased in 3 times measurement between pre- and post-treatment. The soil temperature ranges from 26.2 oC to 33.2 oC in pre-treatment and 27.6 oC to 31.8 oC in post-treatment. The air temperature was observed ranges from 27.96 oC to 34.3 oC in pre-treatment and 28.36 oC to 34.56 oC in post-treatment. Measurement of RH was resulted ranges from 61.2% to 75.4% in pre-treatment and 61.4% to 74.8% in pre-treatment. The land is proposed become paddy field for next step land processing. As result, the diversity index was decreased in pre- and post-treatment. The Shannon diversity index was decreased from 0.81 to 0.72. Similarly, the Simpson diversity index was also decreased from 1.94 to 1.77. Meanwhile, the evenness index was increased from 0.58 to 0.65. These results suggested for farmer to process the land as soon as possible after land clearing process, if they want to form paddy field from pasture land.AbstrakKegiatan pertanian bergantung pada tanah sebagai media tumbuh suatu tanaman. Selain kegiatan pertanian, organisme hidup lain juga bergantung terhadap tanah sebagai ekosistem. Namun, seringkali biodiversitas dan faktor lingkungan diabaikan dalam kegiatan pertanian. Oleh karenanya, indentifikasi perubahan lingkungan dan biodiversitas sanget perlu dilakukan. Dalam penelitian ini, perubahan parameter lingkungan dan biodiversitas diamati sebelum dan sesudah aktivitas land clearing. Hasil pengamatan menunjukkan, pH tanah, suhu tanah dan suhu lingkungan meningkat dalam 3 kali pengukuran dari sebelum ke sesudah aktivitas land clearing. Suhu tanah berkisar 26.2 oC-33.2 oC pada sebelum kegiatan land clearing dan 27.6 oC-31.8 oC setelah aktivitas land clearing. Suhu lingkungan ditemukan berkisar 27.96 oC-34.3 oC pada kegiatan sebelum land clearing dan 28.36 oC-34.56 oC setelah kegiatan land clearing. Hasil pengukuran RH lingkungan ditemukan berkisar 61.2%-75.4% pada kegiatan sebelum land clearing dan 61.4%-74.8% setelah kegiatan land clearing. Sementara itu, index diversitas ditemukan menurun setelah aktivitas land clearing. Nilai Shannon diversity index ditemukan menurun setelah aktivitas land clearing dari 0.81-0.72. Pola serupa ditemukan pada nilai Simpson diversity index, dimana terjadi penurunan dari 1.94 menjadi 1.77. Nilai evenness index meningkat dari 0.58 menjadi 0.65. Berdasarkan hasil tersebut dapat disarankan ke petani untuk segera mengolah lahan tersebut setelah kegiatan land clearing untuk menghindari terjadinya pertumbuhan kembali vegetasi, serta perubahan parameter lingkungan dan biodiversitas.

Impact of Climate Change on Sea Surface Temperature and Chlorophyll-a Concentration in South Sukabumi Waters Mamat Suhermat; Muhammad Dimyati; S. Supriatna; M. Martono
Jurnal Ilmu Lingkungan Vol 19, No 2 (2021): Agustus 2021
Publisher : School of Postgraduate Studies, Diponegoro Univer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jil.19.2.393-398

Indonesia territorial waters are very vulnerable to the impacts of climate change. Research about the variations of sea surface temperature and chlorophyll-a concentration in the southern waters of Java has been undertaken by several researchers. However, the research is still in the scope of regional scale south of Java. This research was conducted to determine the impact of climate change on sea surface temperature and chlorophyll-a concentration in Sukabumi waters. The data used consisted of IOD index anomalies, sea surface temperature and monthly chlorophyll-a concentrations from December 2002 to November 2020. Descriptive analysis was used to determine seasonal and inter-annual variability and linear regression method was used to analyze trends in changes in sea surface temperature (SST) and chlorophyll-a concentration. The results showed that the seasonal variation was influenced by the monsoon, while the interannual variation was influenced by the Indian Ocean Dipole. Climate change causes SST and chlorophyll-a concentrations to increase. In the 2003-2020 time period, SPL increased by 0.08 °C and an increase in chlorophyll-a concentration by 0.03 mg/ m3. ABSTRAKPerairan selatan Sukabumi yang berhadapan langsung dengan samudera Hindia sangat rentan terhadap dampak perubahan iklim. Penelitian mengenai variasi suhu permukaan laut dan konsentrasi klorofil-a di perairan selatan Jawa sudah dilakukan oleh beberapa peneliti sebelumnya. Namun penelitian tersebut masih dalam lingkup skala regional selatan Jawa. Penelitian ini dilakukan untuk mengetahui dampak perubahan iklim terhadap suhu permukaan laut dan konsentrasi klorofil-a di Perairan selatan Sukabumi. Data-data yang digunakan terdiri dari indeks IOD, suhu permukaan laut dan konsentrasi klorofil-a bulanan periode Desember 2002 hingga November 2020. Metode yang digunakan dalam penelitian ini adalah analisis deskripsi dan regresi linier. Hasil penelitian menunjukkan bahwa variasi musiman suhu permukaan laut dan konsentrasi klorofil-a di perairan ini dipengaruhi oleh monsun, sedangkan variasi antar tahunan dipengaruhi oleh Indian Ocean Dipole. Perubahan iklim menyebabkan suhu permukaan laut dan konsentrasi klorofil-a mengalami kenaikan. Dalam periode waktu 2003-2020 suhu permukaan laut mengalami kenaikan sebesar 0,08°C dan kenaikan konsentrasi klorofil-a sebesar 0,03 mg/m3.

Analisis Neraca Air dan Prasarana Tampungan Air di DAS Ciujung Yulia Dwi Kurniasari; Hadi Susilo Arifin; Muhammad Yanuar Purwanto
Jurnal Ilmu Lingkungan Vol 19, No 2 (2021): Agustus 2021
Publisher : School of Postgraduate Studies, Diponegoro Univer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jil.19.2.227-235

Peningkatan jumlah penduduk, laju pertumbuhan ekonomi dan pengembangan wilayah berdampak pada kondisi sumber daya air. Keterbatasan prasarana tampungan air menjadi penyebab pentingnya distribusi sumber daya air secara berkelanjutan. Penelitian ini bertujuan mengetahui kondisi neraca air dan prasarana tampungan air yang ada di DAS Ciujung. Metode yang digunakan adalah menghitung kebutuhan dan ketersediaan air, Neraca surplus-defisit, Indeks Pemakaian Air (IPA) dan Indeks ketersediaan air per kapita berdasarkan metode SNI 6728.1.2015 serta indikator tampungan air. Ketersediaan air dihitung berdasarkan debit andalan 80% (Q80). Kebutuhan air dihitung dari kebutuhan rumah tangga, perkotaan, industri (RKI), irigasi, peternakan, perikanan dan pemeliharaan sungai. Prasarana tampungan air dihitung melalui indikator tampungan bangunan konservasi air yang ada. Hasil analisis menunjukkan bahwa kebutuhan air di DAS Ciujung sebesar 37,52 m3/detik sedangkan ketersediaan airnya sebesar 36,57 m3/detik. Hal ini mengindikasikan adanya defisit air sebesar 0,95 m3/detik. Indeks Pemakaian Air sebesar 1,03 (kategori jelek). Indeks ketersediaan air per kapita sebesar 623,05 (indikasi kelangkaan air). Sedangkan indikator tampungan air sebesar 31,34% (kategori baik). ABSTRACTThe population growth, the rapid rate of economic growth and regional development will have an impact on the condition of water resources. Limited water storage infrastructure is the importance cause of allocating water resources. The objective of study is to know the water balance and water storage infrastructure in Ciujung Watershed. The analysis methods was used to calculate the amount of water supply and demand, to calculate the surplus-deficit balance, Water Consumption index (IPA), Water Availability Index per Capita refers to SNI 6728.1.2015 and water storage indicator. Water supply calculation based on the mainstay discharge of 80% (Q80). Water demands calculation from the demand of households, cities and industries (RKI), irrigation, livestock, fisheries and river maintenance. Capacity of existing water conservation storage used to predict the water storage infrastructure. The results of analysis show that the water demands in Ciujung Watershed is 37,52 m3/second, while the water supply is 36,57 m3/second. This indicates there is a water deficit of 0,95 m3/second. According to calculation, Water Consumption Index is 1,03 (bad category), It resulted that Water availability index per capita is 623,05 (water scarcity indicator). On the other hand, Indicator for water storage is 31,34% (good category).

Analisis Perubahan Penutupan Lahan dan Potensi Karbon di Taman Hutan Raya Pocut Meurah Intan, Aceh Indonesia Rahmat Fadhli; Sugianto Sugianto; Syakur Syakur
Jurnal Ilmu Lingkungan Vol 19, No 2 (2021): Agustus 2021
Publisher : School of Postgraduate Studies, Diponegoro Univer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jil.19.2.450-458

Perubahan penutupan lahan merupakan sektor penyumbang emisi gas rumah kaca terbesar, termasuk di dalamnya adalah pemanfaatan lahan. Analisis tutupan lahan menjadi bagian penting dalam menentukan jumlah potensi karbon yang tersedia. Penelitian bertujuan untuk menganalisis perubahan tutupan lahan dari tahun 2003 hingga 2018 dan menghitung potensi karbon di Taman Hutan Raya Pocut Meurah Intan dengan luas objek penelitian 6.215 ha. Penelitian dilaksanakan selama 5 (lima) bulan. Penelitian ini menggunakan metode stock difference, yaitu metode perhitungan luas tutupan lahan dan stok karbon pada dua titik waktu. Hasil penelitian menunjukkan bahwa perubahan luas tertinggi tahun 2018 seluas 263 ha dan terendah tahun 2009 seluas 108 ha. Lahan terbuka meningkat seluas 100 ha, pemukiman 81 ha, semak belukar 65 ha, pertanian lahan kering campur semak 32 ha. Sementara hutan lahan kering sekunder menurun 79 ha, hutan tanaman 76 ha, savanna 21 ha dan pertanian lahan kering 103 ha. Selama kurun waktu 15 tahun berdasarkan kelas penutupan lahan, cadangan karbon tertinggi pada tahun 2003 sebesar 656.053 ton, terendah tahun 2012 sebesar 620.992 ton. Laju serapan karbon tertinggi pada periode tahun 2015-2018 sebesar 94.615 ton CO2 dan terendah pada periode tahun 2009-2012 sebesar 1.981 ton CO2. Laju emisi tertinggi pada periode tahun 2003-2006 sebesar 79.559 ton CO2 dan terendah periode tahun 2006-2009 sebesar 9.069 ton CO2. Peningkatan serapan karbon diakibatkan oleh meningkatnya luas tutupan lahan pada hutan lahan kering sekunder dan adanya pemanfaatan lahan untuk pertanian lahan kering campur semak.ABSTRACTChanges in land cover are the largest contributor to greenhouse gas emissions, including land use. Land cover analysis is an important part in determining the potential amount of carbon available. The study aims to analyze changes in land cover from 2003 to 2018 and calculating the carbon potential in the Pocut Meurah Intan Forest Park with a research object area of 6,215 ha. The research was conducted for 5 (five) months. This research uses the stock difference method, namely the method of calculating land cover area dan stok karbon pada dua titik waktu. The results showed that the highest area change in 2018 was 263 ha and the lowest was in 2009 at 108 ha. Open land increased by 100 ha, settlement 81 ha, scrub 65 ha, dry land agriculture mixed with shrubs 32 ha. Meanwhile, secondary dry land forest decreased by 79 ha, plantation forest 76 ha, savanna 21 ha and dry land agriculture 103 ha. Over a 15 year period based on land cover class, the highest carbon stock in 2003 was 656,053 tons, the lowest was in 2012 at 620,992 tons. The highest carbon absorption rate in the 2015-2018 period was 94,615 tons of CO2 and the lowest was in the 2009-2012 period of 1,981 tons of CO2. The highest emission rate in the 2003-2006 period was 79,559 tonnes of CO2 and the lowest for the 2006-2009 period was 9,069 tonnes of CO2. The increase in carbon sequestration is caused by the increase in land cover in secondary dryland forest and the use of land for mixed dry land agriculture.

Analisis Konsentrasi PM2,5, CO, dan CO2, serta Laju Konsumsi Bahan Bakar Biopelet Sekam Padi dan Jerami pada Kompor Biomassa Fadjar Goembira; Debby Maurine Aristi; Defri Nofriadi; Nilda Tri Putri
Jurnal Ilmu Lingkungan Vol 19, No 2 (2021): Agustus 2021
Publisher : School of Postgraduate Studies, Diponegoro Univer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jil.19.2.201-210

Penelitian ini dilakukan untuk menganalisis konsentrasi PM2.5, CO dan CO2 dalam ruangan ketika dilakukan penggunaan bahan bakar biopelet pada sebuah kompor biomassa, serta menghitung laju konsumsi bahan bakar tesebut. Pengujian menggunakan metode water boiling test (WBT) untuk mensimulasikan proses memasak yang terbagi ke dalam 3 fase, yaitu cold start (CS)/fase dingin, hot start (HS)/fase panas, dan simmering (SM)/fase mendidih. Biopelet dibuat dari limbah sekam dan jerami padi. Pengukuran PM2,5 dilakukan menggunakan low volume air sampler (LVS) yang dilengkapi dengan elutriator untuk memisahkan partikel berukuran di atas 2,5 mikron dan filter fiberglass untuk menangkap partikel berukuran kurang dari 2,5 mikron pada kecepatan aliran udara 3,5 liter per menit. Sedangkan pengukuran CO dan CO2 menggunakan Portable Air Quality Monitor. Didapatkan konsentrasi PM2,5 biopelet sekam padi pada fase CS, HS, dan SM berturut-turut 33,13,30,81, dan 24,76 μg/Nm3, sedangkan untuk biopelet jerami padi diperoleh 23,29, 29,98, dan 30,42 μg/Nm3.Terkait konsentrasi CO, pada ketiga fase berturut-turut untuk biopelet sekam padi yaitu 5,29, 5,14, dan 6,09 ppm, sedangkan untuk biopelet jerami padi didapatkan 6,13, 5,86, dan 5,67 ppm. Terakhir, pengukuran konsentrasi CO2 biopelet sekam padi yaitu 436,74, 451,71, dan 472,82 ppm, sedangkan pada biopelet jerami padi terukur 419,87, 417,93, dan 453,43 ppm, pada ketiga fase berturut-turut. Konsentrasi PM2,5, gas CO dan CO2 biopelet masih memenuhi baku mutu udara indoor sesuai dengan PERMENKES/1077/2011. Rasio CO/CO2 berada di bawah nilai 0,02 yang menunjukkan pembakaran bahan bakar biopelet menghasilkan karbon monoksida yang kecil sehingga terjadi pembakaran sempurna. Laju konsumsi bahan bakar biopelet lebih kecil dibandingkan jika digunakan biomassa yang belum diolah menjadi biopelet. ABSTRACTThis research was conducted to analyse indoor PM2.5, CO dan CO2 concentrations during the use of biopellet fuel in a biomass stove, and to calculate the fuel consumption rate. Water boiling test (WBT) was used to simulate cooking activities, which comprises of three phases, i.e., cold start (CS), hot start (HS), and simmering (SM). The biopellet was made from rice husk and straw wastes. PM2.5 were measured by using a low volume air sampler (LVAS) that was equipped with an elutriator to separate particulates with more than 2.5-micron size and a fiberglass filter to trap particulates with less than 2.5-micron size at air flow rate of 3.5 liter per minute. Meanwhile, a portable air quality monitor was used to measure CO dan CO2. It was found that PM2.5 concentrations for rice husk biopellet during CS, HS, and SM were, respectively, 33.13,30.81, and 24.76 μg/Nm3. While those for rice straw biopellet were 23.29, 29.98, and 30.42 μg/Nm3. Regarding CO concentrations during the three phases for rice husk biopellet were, respectively, 5.29, 5.14, and 6.09 ppm, whilst for the rice straw biopellet the concentrations were 6.13, 5.86, and 5.67 ppm. Lastly, the CO2 measurements for rice husk biopellet were 436.74, 451.71, and 472.82 ppm, while those for rice husk biopellet were 419.87, 417.93, and 453.43 ppm, during the three phases correspondingly. All PM2.5, CO and CO2 gas concentrations still met indoor air quality standard, in accordance with Minister of Health Regulation Number 1077/2011. Moreover, the CO/CO2 ratios were below 0.02, which indicates that the combustion of the biopellet fuels emited small amount of carbon monoxide, thus, perfect combustion were achieved. The biopellet fuel consumption rates were smaller than those of virgin biomasses that had not been converted into biopellet

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Contact Name
-

Contact Email
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Phone
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Journal Mail Official
-

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Location
Kota semarang,

Jawa tengah

INDONESIA