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Analisis Daya Dukung Lingkungan Hidup Berbasis Jasa Ekosistem Penyediaan Air Bersih Di Pulau Karimunjawa Dian Hudawan Santoso; Johan Danu Prasetya; Deni Rahman Saputra
Jurnal Ilmu Lingkungan Vol 18, No 2 (2020): Agustus 2020
Publisher : School of Postgraduate Studies, Diponegoro Univer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jil.18.2.290-296

Secara alamiah keberadaan Pulau Karimunjawa mampu mendukung kebutuhan hidup bagi manusia dan makhluk hidup lainnya dalam jumlah tertentu, namun seiring dengan meningkatnya pendatang sebagai wisatawan tentu sedikit banyak akan menganggu keseimbangan daya dukung dan daya tampung Pulau Karimunjawa. Ketika daya dukung dan daya tampung lingkungan hidup pada suatu daerah telah terlampui maka dampak negatif terhadap lingkungan akan muncul sehingga tidak lagi mampu mendukung dan mensuport berbagai kebutuhan untuk hidup bagi manusia yang tinggal di daerah itu. Salah satu aspek penting yang diperhitungkan dalam daya dukung dan daya tampung adalah ketersediaan air bersih. Karena itulah maka mengetahui potensi ketersediaan air bersih untuk mensuport kebutuhan masyarakat lokal maupun wisatawan di daerah penelitian sangatlah perlu. Metode yang dipakai adalah pendekatan jasa ekosistem dengan menggunakan dua proxy yaitu bentuk lahan dan tutupan lahan. Tiap-tiap proxy yang telah dideliniasi kemudian dilakukan penilaian atau pembobotan. Penilaian dan pembobotan dilakukan dengan pertimbangan penilaian para ahli atau expert judgement terhadap data ekoregion dan tutupan lahan, analisis spasial dan perhitungan indeks jasa ekosistem (IJE), serta visualisasi spasial IJE. Ground check lapangan dilakukan untuk memastikan kenampakan yang diperkirakan. Overlay dari dua proxy setelah dibobot akan menghasilkan peta jasa ekosistem penyedia air bersih. Hasil yang didapatkan adalah daerah penelitian didominasi jasa ekosistem penyedia air bersih dengan kelas tinggi seluas 1.942,94 ha atau 55,14% dan kelas sangat tinggi seluas 12,71 ha atau 0,36% untuk Desa Karimunjawa. Pada Desa Kemujan didominasi kelas sedang dengan luas 381,75 ha atau 10,84%; kelas tinggi dengan luas 869,38 ha atau 24,68%. Dengan demikkian secara umum Daya Dukung Lingkungan Hidup Pulau Karimunjawa masih mampu mendukung dan mampu menjadi penyedia air bersih yang baik begi lingkungan di sekitarnya.

Kajian Spasial Multi Kriteria DRASTIC Kerentanan Air tanah Pesisir Akuifer Batugamping di Tanjungbumi Madura Erik Febriarta; Muh Aris Marfai; Dyah Rahmawati Hizbaron; Ajeng Larasati
Jurnal Ilmu Lingkungan Vol 18, No 3 (2020): November 2020
Publisher : School of Postgraduate Studies, Diponegoro Univer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jil.18.3.476-487

Air tanah pesisir memiliki potensi kerentanan air tanah terhadap pencemaran tinggi, hal tersebut dipengaruhi oleh penyusun batuan bersifat porus. Selain faktor porusnya sifat batuan melolosakan air tanah, batugamping juga memiliki potensi kerentanan tinggi dengan media celah atau rekah dalam menyimpan dan melolosakan air tanah dengan percepatan pergerakan air tanah yang tinggi. Semakin cepat batuan mengalirkan air di dalam tanah, maka berpotensi tinggi dalam menyebarkan sumber pencemar di dalam sistem akuifer. Kecamatan Tanjungbumi berada di pesisir dengan batuan penysun didominasi oleh pasiran dan batugamping (Formasi Madura). Secara litologi akuifer, terdiri atas 70,3 % akuifer batugamping dan 29,7 % akuiufer pasiran. Tujuan dari penelitian ini adalah untuk menentukan zona kerentanan air tanah terhadap pencemaran pada akuifer pesisir dengan penyusun batuan dominan batugamping. Untuk mencapai tujuan tersebut, maka dilakukan analisis spasial multi kriteria dengan pendekatan DRASTIC. Metode DRASTIC dapat merepresentarikan kerentanan air tanah dengan pendekatan hidrogeologi. Paramater yang digunakan antara lain depth to water / kedalaman muka air tanah (D), recharge / imbuhan air (R), aquifer / jenis akufer (A), soil media / tekstur tanah (S), topography / kemiringan lereng (T), impact of vadose zone media / jenis zona tak jenuh (I), dan conductivity hydraulic / konduktivitas hidraulis akuifer (C). Parameter yang digunakan mempunyai pengaruh dalam menentukan kerentanan yang dibedakan dengan nilai dan nilai bobot. Pendekatan parameter bobot tinggi memberikan informasi faktor yang paling berpengaruh mempengaruhi kerentanan air tanah. Perhitungan hasil skor total diperoleh dari perhitungan linier seluruh parameter, kemudian klasifikasikan kelas kerentanan air tanah terhadap pencemaran. Hasil penelitian menunjukkan kerentanan air tanah multikriteria menghasilkan lima tingkat kerentanan air tanah terhadap pencemaran. Kerentanan sangat rendah 2,18 km2 (3,20 %), kerentanan rendah seluas 10,01 km2 (14,69 %), kerentanan sedang seluas 45,74 km2 (67,11 %), kerentanan tinggi seluas 7,22 km2 (10,59 %), dan kerentanan sangat tinggi dengan luas 3 km2 (4,40%) dari luas kecamatan Tanjungbumi.AbstractCoastal groundwater has the potential for groundwater vulnerability to high pollution, this is influenced by porous rock constituents. In addition to the porous factor of groundwater, limestone also has a high potential for vulnerability to the medium of gaps or fractures in storing and releasing groundwater with a high acceleration of groundwater movement. The faster the rock drains water in the soil, the higher the potential for spreading pollutants in the aquifer system. Tanjungbumi Subdistrict is located on the coast with the rock formation dominated by sand and limestone (Madura Formation). In terms of aquifer lithology, it consists of 70,3 % limestone aquifer and 29.7% sandwater aquifer. Purpose of this study was to determine the zone of groundwater vulnerability to pollution in coastal aquifers with limestone dominant rock constituents. To achieve this goal, a multi-criteria spatial analysis using the DRASTIC approach was carried out. The DRASTIC method can represent groundwater vulnerability with a hydrogeological approach. The parameters used include depth to water (D), recharge (R), aquifer (A), soil media (S), topography (T), impact of vadose zone media (I), and hydraulic conductivity (C). The parameters used have an influence in determining the vulnerability which is differentiated by the value and weight value. The high weight parameter approach provides information on the factors that most influence the vulnerability of groundwater. The calculation of the total score is obtained from a linear calculation of all parameters, then classify the groundwater vulnerability class to pollution. The results showed that multi-criteria groundwater vulnerability resulted in five levels of groundwater vulnerability to pollution. Very low vulnerability is 2,18 km2 (3,20 %), low vulnerability is 10,01 km2 (14,69 %), medium vulnerability is 45,74 km2 (67,11 %), high vulnerability is 7,22 km2 (10,59 %), and very high vulnerability with an area of 3 km2 (4,40 %) of the area of Tanjungbumi district.

Wetland Fires and Its Environmental Conditions Mona Lestari; Desheila Andarini; Anita Camelia; Novrikasari Novrikasari; Rizka Faliria Nandini; Poppy Fujianti
Jurnal Ilmu Lingkungan Vol 19, No 1 (2021): April 2021
Publisher : School of Postgraduate Studies, Diponegoro Univer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jil.19.1.21-28

Today, many wetlands have been converted into agricultural, industrial, and residential areas. This conversion of land functions creates new problems for the environment and human, one of which is land fires. The results of land fires can also cause other problems that results in losses in various fields, such as human health, the economy, and other fields. The emergence of smog as a result of land fires can cause respiratory problems, disruption of the transportation system, conflicts between neighboring countries, and the others. South Sumatra Province is one of the largest contributors to the haze as a result of land fires, especially its wetlands. Ogan Ilir Regency is one of the areas in South Sumatra Province which has extensive wetlands and fires frequently occur. Fires are caused by triggering factors, one of which is natural factors such as a prolonged dry season, availability of water supply, and intensity of rainfall. This study is an analytic descriptive study that aimed to provide an overview of environmental conditions on land, the majority of which are wetlands which experienced fires in Ogan Ilir Regency in 2019. The environmental conditions studied included soil and vegetation types. The data obtained will be displayed through tables and graphs, then interpreted and analyzed descriptively. The type of data used is secondary data in the form of a report by the Regional Disaster Management Agency Ogan Ilir Regency related to land fires in OI Regency and processed using the Geographic Information System (GIS) application. The results of the analysis show that the area of land fires that mostly occurred in North Indralaya District was 382,7 hectares with a total of 144 hotspots. The burnt area was dominated by peat soil (53%) and scrub vegetation (43%).

Evaluasi Potensi Keragaman Hijauan Penutup Tanah di Perkebunan Kelapa Sawit Rakyat Kabupaten Aceh Timur Provinsi Aceh Fachrul Akbar; Nur Rochmah Kumalasari; Luki Abdullah
Jurnal Ilmu Lingkungan Vol 19, No 1 (2021): April 2021
Publisher : School of Postgraduate Studies, Diponegoro Univer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jil.19.1.163-169

Kabupaten Aceh Timur memiliki area perkebunan kelapa sawit rakyat mencapai 25,997 ha. Namun, analisis terhadap keragaman dan potensi produksi hijauan yang di area perkebunan kelapa sawit belum pernah dilakukan. Tujuan penelitian ini adalah untuk menganalisis potensi keragaman hijauan yang tumbuh di area perkebunan kelapa sawit rakyat Kabupaten Aceh Timur. Penentuan titik plot pengambilan sampel dilakukan dengan menggunakan metode purposive sampling, berdasarkan kriteria umur tanaman sawit yaitu TBM (0-3 Tahun), Muda (4-8 tahun), Remaja (9-14 tahun), Dewasa (15-20 tahun) dan Tua (20-25 tahun). Parameter yang diamati meliputi keragaman, produksi hijauan segar, produksi bahan kering dan kandungan nutrisi hijauan. Spesies yang mendominasi pada area TBM yaitu Asystasia gangetica L, Imperata cylindrica, Oplismenus compositus, Panicum repens dan Paspalum conjugatum dengan INP 14,29. Spesies yang mendominasi pada area tanaman muda yaitu Axonopus compressus, Clidemia hirta dan Drymaria cordata dengan INP 19,64. Spesies yang mendominasi pada area tanaman remaja yaitu Panicum repens, Paspalum conjugatum dan Urochloa reptans L dengan INP 20,41. Spesies yang mendominasi pada area tanaman dewasa yaitu Adiantum hispidulum Sw dan Nephrolepis biserrata dengan INP 20,00. Spesies yang mendominasi pada area tanaman tua yaitu Imperata cylindrica dan Clidemia hirta L dengan INP 33,33. Potensi produksi hijauan mencapai mencapai 13,37 ton ha-1 hijauan segar dan 3,19 ton ha-1 bahan kering. Kandungan protein kasar yang berasal dari hijauan di bawah naungan kelapa sawit berkisar antara 8,55% - 12,84%, sedangkan kandungan serat kasar berkisar antara 17,65% - 24,70%. Berdasarkan hasil penelitian disimpulkan bahwa keragaman hijauan di bawah naungan kelapa sawit di Kabupaten Aceh Timur dikategorikan sedang.

Kajian Terhadap Kondisi Sosial, Ekonomi dan Budaya Masyarakat dalam Mendukung Pengelolaan Cagar Alam Ndeta Kelikima di Kabupaten Ende Provinsi Nusa Tenggara Timur Martinus Rhaki; Ludji M Riwu Kaho; Blajan Konradus
Jurnal Ilmu Lingkungan Vol 18, No 3 (2020): November 2020
Publisher : School of Postgraduate Studies, Diponegoro Univer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jil.18.3.424-435

Cagar Alam (CA) merupakan kawasan konservasi yang mutlak dilindungi dari aktivitas manusia. Kondisi demikian berbeda dengan CA Ndeta Kelikima dimana telah ada permukiman dan pertanian masyarakat Desa Aelipo. Beberapa hasil penelitian menggambarkan bahwa kondisi sosial, ekonomi dan budaya masyarakat sekitarnya penting untuk diperhatikan dalam pengeloaan CA. Penelitian terkait kondisi sosial, ekonomi dan budaya masyarakat dalam pengelolaan CA khususnya di Provinsi Nusa Tenggara Timur belum pernah diteliti (atau masih sedikit diteliti) sehingga ini perlu dilakukan. Tujuannya adalah untuk mengetahui bagaimana kondisi sosial, ekonomi dan budaya masyarakat dalam mendukung pengelolaan CA Ndeta Kelikima serta rekomendasi pengelolaannya. Lokasi penelitian di Desa Aelipo di dalam kawasan CA Ndeta Kelikima di Kabupaten Ende Provinsi Nusa Tenggara Timur. Pengambilan sampelnya dengan kriteria berbatasan langsung/bermukim di dalam kawasan dan masyarakatnya memanfaatkan lahan pertanian sebagai sumber pendapatannya yang dilaksanakan pada bulan Mei 2019. Perolehan data menggunakan observasi, wawancara, diskusi terbatas dan triangulasi dengan cara purposive sampling dan snowball sampling serta data sekunder. Analisis data menggunakan deskriptif kualitatif melalui analisis SWOT yaitu kekuatan, kelemahan, peluang dan ancaman. Hasil penelitian menunjukkan kondisi sosial masyarakat Desa Aelipo dalam klasifikasi sosial rendah (79,04 %), ekonomi (menggarap lahan dalam kawasan) berklasifikasi tinggi (69,52 %) dan budaya, masih menjunjung adat istiadat dalam struktur lembaga adat dengan peran dominan dari tokoh adat (mosalaki) dalam pembagian hak ulayat serta tradisi menghormati hutan disekitarnya. Kondisi biofisik, terjadi penurunan tutupan hutan padat tahun 1997 hingga tahun 2017 sehingga hutan jarang, semak belukar dan savana meningkat. Perubahan tersebut diduga karena tekanan penduduk dan semakin menyempitnya lahan pertanian. Analisis SWOT menggambarkan strategi pengelolaan CA Ndeta Kelikima berada pada kuadran satu dengan nilai kekuatan dan peluang (1,745 dan 1,733) > dari kelemahan dan tantangan (1,641 dan 1,631) yang berarti kondisi saat ini mempunyai kekuatan dan peluang yang menguntungkan untuk diimplementasikan di tingkat lapangan. Rekomendasi pengelolaannya adalah memprioritaskan rencana pengelolaan dan penataan batas fungsi, koordinasi antar lembaga melalui skema kerja sama penguatan fungsi, penambahan jumlah personil diikuti sosialisasi dan penyuluhan, reinventarisasi potensi kawasan, evaluasi kesesuaian fungsi dan penegakan hukum kehutanan dalam penanganan permasalahan di CA Ndeta Kelikima. AbstractNature Reserve (NR) is a conservation area that is absolutely protected from human activities. This condition is different from NR Ndeta Kelikima where there are already settlements and agriculture of the people of Aelipo Village. Several research results illustrate that the social, economic and cultural conditions of the surrounding communities are important to be considered in NR management. Research related to the social, economic and cultural conditions of the community in NR management, especially in the Province of East Nusa Tenggara has never been researched (or is still little researched) so this needs to be done. The aim is to find out how the social, economic and cultural conditions of the community support the management of the NR Ndeta Kelikima and its management recommendations. The research location is in Aelipo Village within the NR Ndeta Kelikima area in Ende Regency, East Nusa Tenggara Province. Sampling with the criteria of directly bordering/living in the area and the community utilizing agricultural land as a source of income was carried out in May 2019. Data collection used observation, interviews, limited discussion and triangulation by means of purposive sampling and snowball sampling and secondary data. Data analysis used qualitative descriptive through SWOT analysis, namely strengths, weaknesses, opportunities and threats. The results showed that the social conditions of the people of Aelipo Village were in low social classification (79.04%), economy (working on land within the area) were high classified (69.52%) and culture, still upholding customs in the structure of traditional institutions with the dominant role of the figures. adat (mosalaki) in the distribution of customary rights and the tradition of respecting the surrounding forest. Biophysical conditions, there was a decrease in dense forest cover from 1997 to 2017 so that sparse forests, shrubs and savanna increased. This change is thought to be due to population pressure and the narrowing of agricultural land. SWOT analysis illustrates the NR Ndeta Kelikima management strategy is in quadrant one with strengths and opportunities (1,745 and 1,733)> from weaknesses and challenges (1,641 and 1,631), which means that current conditions have favorable strengths and opportunities to be implemented at the field level. Management recommendations are to prioritize management plans and functional boundaries, coordination between institutions through cooperation schemes for strengthening functions, increasing the number of personnel followed by socialization and counseling, reinventing potential areas, evaluating the suitability of functions and enforcing forestry law in handling problems at the NR Ndeta Kelikima.

Penyisihan Nutrien Nitrogen pada Limbah Cair Artifisial NPK Menggunakan Sistem Floating Treatment Wetlands (FTWs) Sugiarti Sugiarti; Nurul Setiadewi; Dian Oktaviyani; Denalis Rohaningsih
Jurnal Ilmu Lingkungan Vol 18, No 3 (2020): November 2020
Publisher : School of Postgraduate Studies, Diponegoro Univer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jil.18.3.595-601

Lahan Basah Terapung atau Floating Treatment Wetlands (FTWs) merupakan salah satu alternatif pengolahan limbah secara alamiah untuk mengurangi kadar polutan pada suatu badan air dengan memanfaatkan akar tanaman sebagai penyerap polutan tersebut. Penelitian ini merupakan kajian awal pengolahan limbah pupuk NPK (dengan dasar senyawa N pada konsentrasi tertentu, menggunakan sistem FTW. Penelitian ini bertujuan untuk mengetahui efisiensi penyisihan konsentrasi nutrien nitrogen, antara lain ammonia, nitrat, dan total nitrogen (TN), di dalam limbah cair artifisial NPK menggunakan sistem FTWs dengan pemanfaatan tanaman melati air (Echinodorus berteroi (Spreng.) Fassett) dan pisang–pisangan (Helliconia psittaforum) sebagai penyerap nutrien tersebut. Hasil penelitian ini diharapkan dapat menjadi bahan untuk rekomendasi alternatif teknologi pengolahan dalam mengatasi masalah pencemaran di perairan. Kolam percobaan sejumlah 4 (empat) diisi pupuk NPK sebagai limbah artifisial dengan konsentrasi N sebesar 2 mg/L. Kolam 1 merupakan kolam kontrol, kolam 2 berisi FTWs tanpa tanaman, kolam 3 berisi FTWs dengan tanaman melati air, dan kolam 4 berisi FTWs dengan tanaman pisang-pisangan. Sampling air dilakukan pada hari ke 3, 10, 24, 35, dan 112. Parameter yang diukur adalah pH, suhu air, kekeruhan, konduktivitas, oksigen terlarut, ammonia, nitrat, dan TN. Tanaman melati air dapat menyisihkan ammonia sebesar 91,19%, nitrat sebesar 100% dan TN sebesar 77,04%. Sedangkan, tanaman pisang-pisangan dapat menyisihkan ammonia sebesar 90,30%, nitrat sebesar 100% dan TN sebesar 67,12%. Kedua jenis tanaman menunjukkan pertumbuhan yang baik, yang ditandai dengan tumbuhnya daun, batang, bunga, dan akar tanaman. Hal ini menunjukkan bahwa kedua jenis tanaman tersebut memiliki kemampuan menyerap nutrien nitrogen secara efektif melalui sistem pengolahan FTWs.ABSTRACTFloating Treatment Wetlands (FTWs) is an alternative natural waste treatment which is able to reduce contaminants contained in a water body by utilizing plant roots as an absorber of any pollutants. This research is a preliminary study of NPK fertilizer waste processing (based on N compounds at certain concentrations, using the FTW system).This study aims to determine the efficiency of removal of nitrogen nutrients, including ammonia, nitrate, and total nitrogen (TN), in NPK artificial wastewater using the FTW system. This FTW system utilized Echinodorus teroi (Spreng.) Fassett and Helliconia psittaforum as absorbers of nitrogen nutrient. The results of this study are expected to be the material for recommendations for alternative processing technologies in overcoming the problem of pollution in waters. Four experimental ponds were filled with NPK fertilizer as an artificial waste with nitrogen concentration of 2 mg/L. Pool 1 was a control pool, pool 2 contained FTW without plants, pool 3 contained FTW with Echinodorus teroi (Spreng.) Fassett, and pool 4 contains FTW with Helliconia psittaforum. Water sampling was carried out on days 3, 10, 24, 35, and 112. The parameters measured were pH, air temperature, turbidity, conductivity, dissolved oxygen, ammonia, nitrate, and TN. Echinodorus teroi (Spreng.) Fassett can remove ammonia by 91,19%, nitrate by 100% and TN by 77,04%. Meanwhile, Helliconia psittaforum can remove ammonia by 90,30%, nitrate by 100% and TN by 67,12%. Both types of plants showed good growth, which was indicated by the leaves growth, as well as the stems, flowers and roots. This showed that both types of plants have the ability to absorb nutrients effectively through the FTWs processing system.

Analisis Faktor Pendorong Perubahan Tutupan Lahan selama Satu Dekade di Kabupaten Labuhanbatu Utara Regan Leonardus Kaswanto; Ruth Mevianna Aurora; Doni Yusri; Sofyan Sjaf
Jurnal Ilmu Lingkungan Vol 19, No 1 (2021): April 2021
Publisher : School of Postgraduate Studies, Diponegoro Univer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jil.19.1.107-116

Mengacu pada Undang Undang Republik Indonesia Nomor 23 Tahun 2008, sejak tanggal 24 Juni 2008 Kabupaten Labuhanbatu Utara (Labura) mulai berdiri sendiri sebagai kabupaten dan terpisah dari Kabupaten Labuhanbatu Selatan. Pada dasarnya wilayah pemekaran memiliki tujuan untuk meningkatkan kesejahteraan masyarakat. Berdasarkan data BPS tahun 2019, sektor unggulan dan mata pencaharian di Kabupaten Labura adalah pertanian. Akan tetapi seiring berjalannya waktu usaha pertanian semakin menurun. Hal ini terjadi diduga karena perubahan tutupan lahan. Secara geografis pemekaran wilayah akan mempengaruhi perubahan tutupan penggunaan lahan. Oleh karena itu untuk mengetahui seberapa besar perubahan yang terjadi perlu dilakukan analisis tutupan lahan tahun 2010-2019, kurang lebih 10 tahun setelah masa pemekaran terjadi. Analisis tutupan lahan satu dekade ini dilakukan menggunakan Citra Landsat yang diolah melalui metode klasifikasi penggunaan dan perubahan lahan. Hasilnya Kabupaten Labura mengalami perubahan yang relatif lambat. Perkebunan karet dan sawit mengalami perluasan lahan yang besar sedangkan hutan mangrove berubah fungsi dominan menjadi perkebunan. Sementara lahan terbuka mengalami perubahan terkecil yang juga mengarah ke perkebunan. Setelah dilakukan analisis tutupan lahan, dilakukan Seleksi Bivariat dengan menggunakan metode Logistic Regression Analysis (LRA) untuk mendapatkan faktor pendorong perubahan. Ada 7 variabel yang diduga mempengaruhi perubahan yaitu 1) jenis tanah, 2) kemiringan lereng, 3) curah hujan, 4) jumlah penduduk, 5) kepadatan penduduk, 6) jarak dari pusat kecamatan, dan 7) jarak dengan jalan utama. Hasil analisis menunjukan 6 variabel mempengaruhi dan hanya 1 variabel yakni curah hujan yang tidak mempengaruhi. Nilai positif pengaruh terbesar adalah jenis tanah. Semakin subur tanah maka perubahan semakin cepat terjadi. Nilai negatif pengaruh terbesar adalah jarak dari pusat kota yaitu kecamatan. Semakin jauh jarak dengan pusat kota, perubahan semakin cepat terjadi. Hal ini terjadi karena perkebunan dan pertanian yang lebih banyak mengalami perubahan berada jauh dari pusat pemukiman kecamatanan. Rekomendasi berupa perlunya zonasi tata ruang dan pengawasan alih fungsi lahan.

Studi Potensi Airtanah pada Cekungan Airtanah (CAT) Banyumudal, Kabupaten Kebumen, Jawa Tengah T. Listyani R.A.; Thomas Triadi Putranto
Jurnal Ilmu Lingkungan Vol 18, No 3 (2020): November 2020
Publisher : School of Postgraduate Studies, Diponegoro Univer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jil.18.3.531-544

Cekungan Airtanah (CAT) Banyumudal terletak di Kabupaten Kebumen, seluas 67 km2. Mengacu pada peta geologi regional, daerah ini tersusun atas Formasi Halang, Kalipucang, dan Gabon. Maksud penelitian ini adalah menganalisis potensi airtanah CAT Banyumudal, baik secara kualitas maupun kuantitasnya. Metodologi yang digunakan adalah pengumpulan data sekunder, pemetaan hidrogeologi, akuisisi geolistrik konfigurasi Schlumberger dan uji pemompaan. Pemetaan hidrogeologi dilaksanakan pada 153 titik minatan, meliputi 110 sumur gali, 20 sumur bor, dan 23 mata air. Hasil pengujian laboratorium menunjukkan nilai daya hantar listrik airtanah sebesar 115 - 1.251 μS/cm pada sumur gali, 507- 981 μS/cm pada sumur bor dan 259 - 604 μS/cm pada mata air. Derajat keasaman (pH) airtanah pada sumur gali sebesar 5,761 - 8,5, pada sumur bor 7,013 - 8,333 dan pada mata air 6,747 - 8,204. Hasil plot diagram Stiff menunjukkan adanya 12 tipe airtanah, sedangkan plot diagram Piper menunjukkan 4 fasies airtanah, yaitu fasies alkaline earth water predominantly hydrogencarbonate, fasies alkaline earth water with higher alkaline content predominantly hydrogencarbonate, fasies alkaline water predominantly hydrogencarbonate, dan fasies alkaline water predominantly sulphate chloride. Hal tersebut menunjukkan bahwa airtanah di daerah penelitian berkualitas sedang – sangat baik. Hasil interpretasi geolistrik menunjukkan bahwa litologi bawah permukaan berupa batulempung, batulempung pasiran, batupasir, batugamping, breksi dan tuf. Hanya akuifer bebas yang berkembang di daerah penelitian. Cadangan statis airtanah di daerah penelitian sebesar 200,7×106 m3 sedangkan cadangan dinamis sebesar 33,4 × 106 m3. Daerah penelitian dapat dibagi menjadi dua zona potensi airtanah, yaitu zona potensi airtanah rendah pada akuifer bebas dengan debit optimum 0,553 - 1,492 L/dtk dan zona potensi airtanah sedang pada akuifer bebas dengan debit optimum 2,651 - 3,024 L/dtk.ABSTRACTBanyumudal Groundwater Basin (Banyumudal GWB) is located in Kebumen Regency, covering 67 km2 area. According to the regional geological map, the study area consists of Halang, Kalipucang and Gabon Formations. This study aims to analyze groundwater potency in Banyumudal GWB in quality and quantity. The method of study includes secondary data collection, hydrogeological mapping, geoelectric acquisition with Schlumberger configuration and pumping test. Hydrogeological mapping was done from 153 locations, consist of 110 dug wells, 20 deep wells and 23 springs. Result of the laboratory test shows that groundwater has electrical conductivity (EC) between 115 – 1,251 μS/cm in dug wells, 507 - 981 μS/cm in deep wells and 259 - 604 μS/cm in springs. Groundwater shows an acidity (pH) of 5,761 - 8,5 in dug wells, 7,013 - 8,333 in deep wells and 6,747-8,204 in springs. Result of the Stiff diagram plot shows that there are 12 types of groundwater, while the Piper diagram plot shows 4 groundwater facies namely alkaline earth water predominantly hydrogencarbonate, alkaline earth water with higher alkaline content predominantly hydrogencarbonate, alkaline water predominantly hydrogencarbonate, and alkaline water predominantly sulphate chloride facies. This result generally represent that groundwater in the study area is in the very good – medium range quality. Geoelectric results indicate subsurface litology as claystone, sandy claystone, sandstone, limestone, breccia and tuff. It seems that only unconfined aquifers which exist in the study area. Groundwater reserves in study area include static reserves in amount of 200,7×106 m3 and dynamic reserves in amount of 33,4 × 106 m3. Based on quality and quantity of groundwater, there are two groundwater potential zones, that are low groundwater potential zone in unconfined aquifer with optimum discharge of 0,553 – 1,492 L/s and medium groundwater potential zone in unconfined aquifer with optimum discharge of 2,651 - 3,024 L/s.

The Effect of Environmental Disclosure and Performance on Profitability in the Companies Listed on the Stock Exchange of Thailand (SET) Indah Fajarini Sri Wahyuningrum; Muhammad Ihlashul Amal; Suci Sularsih
Jurnal Ilmu Lingkungan Vol 19, No 1 (2021): April 2021
Publisher : School of Postgraduate Studies, Diponegoro Univer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jil.19.1.66-72

The main objective of this study is to determine the empirical evidence of the effect of environmental disclosure, environmental performance, company age, and company size on profitability. The purposive sampling method was used to determine the sample of companies and obtained 85 companies from a total population of 100 large companies listed on the Thailand Stock Exchange (SET) in 2018. The data analysis technique used was multiple linear regression analysis using analysis tool IBM SPSS Statistics version 26. The results of this study prove that environmental disclosure has a significant positive effect on profitability. Environmental performance and company size have a significant negative effect on profitability. On the other hand, company age is not proven to have a significant effect on profitability. Based on the research results, it can be concluded that more extensive environmental disclosure is able to increase the achievement of profitability. However, company age is not a factor affecting profitability. Meanwhile, company size and environmental performance as measured by total assets and the existence of ISO 14001 certifications are proven to reduce the level of company profitability. This study also has several limitations, including the time period which is limited to only one time period, namely 2018. It is expected that further studies can expand the time period by more than one year. This is since using a time period of more than one year can illustrate the effect of environmental disclosure and environmental performance, company age and company size on the profitability achieved by the companies. In addition, it is expected that the results of this study can provide input to companies to be more concerned regarding company performance activities, especially on the environment because there are still many companies that have low levels of environmental disclosure even though environmental disclosure in Thailand is still voluntary.

Policy Formulation of The Marine Governance in The Coastal Southern Lebak Regency Banten Province Delly Maulana; Arif Nugroho
Jurnal Ilmu Lingkungan Vol 18, No 3 (2020): November 2020
Publisher : School of Postgraduate Studies, Diponegoro Univer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jil.18.3.565-571

This paper is aimed to explain the presence of marine potentials in the southern coastal area of Lebak Regency, Banten Province that have not been fully exploited. There are several potentials found in this Regency, the extensive coastline of approximately 91.42 km², and the marine resources and fisheries that could be developed. The potentials include not only fisheries and tourism but also mining. With such a high rate of development in the coastal area of Lebak Regency, it will certainly cause various problems in the region such as First, the degradation of coastal and marine ecosystems in Lebak Regency; Second, the increasing intensity of environmental pollution caused by mining and extraction activities; Third, the vulnerability to natural disasters (abrasion, tsunami, erosion, climate change, et cetera); Fourth, the occurrence of area utilization conflict; and Fifth, low productivity of biological marine resources utilization. The method used in this study was a qualitative research method with in-depth interviews, observations, and documentation. The results show that two issues become marine management problems in the southern coastal area of Lebak Regency, the first is environmental degradation, the second is space use conflicts, and the third is waste pollution due to organic and non-organic waste. Meanwhile, actor mapping shows that the government, in this case, the Regent as the authority in the area, has the power, influence, and interest to give input to the marine management of the Southern Coast of Lebak Regency so that it would not only increase the local revenue but also have a significant effect on the local communities, especially the fisher people and, and the environmental sustainability.ABSTRACTThis paper is aimed to explain the presence of marine potentials in the southern coastal area of Lebak Regency, Banten Province that have not been fully exploited. There are several potentials found in this Regency, the extensive coastline of approximately 91.42 km², and the marine resources and fisheries that could be developed. The potentials include not only fisheries and tourism but also mining. With such a high rate of development in the coastal area of Lebak Regency, it will certainly cause various problems in the region such as First, the degradation of coastal and marine ecosystems in Lebak Regency; Second, the increasing intensity of environmental pollution caused by mining and extraction activities; Third, the vulnerability to natural disasters (abrasion, tsunami, erosion, climate change, et cetera); Fourth, the occurrence of area utilization conflict; and Fifth, low productivity of biological marine resources utilization. The method used in this study was a qualitative research method with in-depth interviews, observations, and documentation. The results show that two issues become marine management problems in the southern coastal area of Lebak Regency, the first is environmental degradation, the second is space use conflicts, and the third is waste pollution due to organic and non-organic waste. Meanwhile, actor mapping shows that the government, in this case, the Regent as the authority in the area, has the power, influence, and interest to give input to the marine management of the Southern Coast of Lebak Regency so that it would not only increase the local revenue but also have a significant effect on the local communities, especially the fisher people and, and the environmental sustainability.

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