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Identification of the Main Water Quality Parameters for Monitoring and Evaluating Watershed Health Pranatasari Dyah Susanti; Nining Wahyuningrum
Indonesian Journal of Geography Vol 52, No 2 (2020): Indonesian Journal of Geography
Publisher : Faculty of Geography, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijg.47280

Abstract

Water quality is one of the crucial parameters in monitoring and evaluating watersheds. A large number of parameters causes the monitoring and evaluation of watershed performance to be less efficient and costly. This study aims to determine the main parameters as a method of simplifying water quality observation parameters by producing equations that can be used to predict the level of pollution of a non-point source pollutant (watershed). A sampling of surface water was carried out by purposive sampling at several outlets located in the Brantas and Upper Solo watersheds. The research parameters analysed were: TSS, TDS, BOD, COD, Phenol, Free Chlorineine, Sulfide, Arsenic, Fe, Pb, Phosphate, Nitrate, Nitrite, Detergent, Turbidity and E. Coli. The results of the analysis of water quality are used to calculate the value of the Pollution Index (PI) according to the Decree of the Minister of Environment No. 115 of 2003 and to determine the class of water quality standards that refer to Class III water quality standards, in Government Regulation No.82 of 2001. The analysis showed that all samples were at mild to moderate pollution levels, and did not meet class III water quality standards. Multiple regression analysis produced two equations, namely: Model 1: PI = 3.952 + 91.668 Phenol and Model 2: PI = 3.086 + 80.167 Phenol + 0.152 BOD, with R squared values of 53% and 69.9% with a confidence level of 0.005. Thus the prediction of pollution levels of similar watershed can be made only by using the two most influential parameters namely phenol and/or BOD alone.   
Spatial Distribution of Potential Area for Community Forest Development in Grindulu Watershed Arina Miardini; Pranatasari Dyah Susanti
Geoplanning: Journal of Geomatics and Planning Vol 6, No 1 (2019)
Publisher : Department of Urban and Regional Planning, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (924.911 KB) | DOI: 10.14710/geoplanning.6.1.73-80

Abstract

The effect of deforestation on environmental degradation shifted the orientation of forest management into carrying capacity of the watershed. Based on Law No. 41/1999 on Forestry, mandates adequacy forest area defined a minimum of 30% of the watershed area which fulfilled by public forest and private forest. State forest area has limitations, so the development of community forests is needs for optimal forest area in a watershed is required. The purpose of this study was to determine the spatial distribution of potential areas for community forest development in Grindulu Watershed. The potential of community forest was examined through an interpretation of Landsat 8 of 2016 Path/Row 119/668 for land availability and the transformation of NDVI (Normalized Difference Vegetation Index) as the density classifier. The classification of forest density was low density class of 5148.12 hectares or 7.20% (NDVI = 0 to 0.356), moderate density class of 12,076.39 hectares or 16.88% (NDVI = 0.356 to 0.590), and high density class of 54,294.04 ha or 75.92% (NDVI = 0.590 to 0.841). The land available for prioritized community forest development was 37,774.40 hectares (52.82%) in the form of dry-fields, shrubs, grasses, farms, which were located outside the protected areas and production forest. Based on the assessment of field surveys which were conducted proportionally at 89 samples, known good accuracy results by 0.84. Potential area for community forest development was 31,281.54 ha (43.74%) including in Pacitan (9 districts) of 29,111.98 hectares, Ponorogo (5 districts) of 263.29 hectares, and Wonogiri (2 districts) of 1,906.27 hectares.
Analysis Physical Characteristics of Land for Estimated Runoff Coefficient as Flood Control Effort in Comal Watershed, Central Java Arina Miardini; Pranatasari Dyah Susanti
Forum Geografi Vol 30, No 1 (2016): July 2016
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/forgeo.v30i1.1131

Abstract

Watershed conditions in Indonesia have been degraded over time, which is marked by increasing area of critical land. The vast area of critical land was evidenced to be a serious threat for watershed carrying capacity which eventually affected the hydrology imbalance in the watershed area. One among watershed with degraded lands which seriously requires priority handling is Comal watershed. The purpose of this study is to identify the physical characteristics of Comal watershed which have significant influence in determining the runoff and calculating the runoff coefficient by taking into account the parameters of watershed’s physical characteristics. The method used in this analysis is Cook method, which is done through the estimation of runoff coefficient by evaluating the parameters of slope, infiltration, vegetation cover, and drainage density.  The unit of analysis in this study is land mapping unit. Results of the four parameters are classified and the classification is done so that the scores of the runoff coefficient are figured out, while the peak discharge determination is performed by using the Rational method. The analysis showed that runoff coefficient of Comal watershed is 61.63%, which can be categorized as high. The runoff coefficients and peak discharge calculations of each sub watershed, respectively, Comal Hilir of 52.65% with peak discharge 505.68 m3/sec, Genteng of 65.04% with peak discharge 542.44 m3/sec, Lomeneng of 64.00% with peak discharge 194.23 m3/sec, Srengseng of 64.10% with peak discharge 270.46 m3/sec, and Wakung Hulu of 62.34% with peak discharge 686.64 m3/ sec. The most influential runoff coefficient factors are, respectively, infiltration rate, slope, vegetation cover, and drainage density. Flood control priority in Comal watershed should be preoccupied to increase the infiltration rate through a combination of three conservation techniques of mechanical, vegetative, and biology.
The impact of Land use Change on Water Pollution Index of Kali Madiun Sub-watershed Pranatasari Dyah Susanti; Arina Miardini
Forum Geografi Vol 31, No 1 (2017): July 2017
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/forgeo.v31i1.2686

Abstract

Land use change is one of the effects of population growth and increased human activities. Land use change that overlooked the rule of ecosystem sustainability has a propensity to adversely affect the environment, including the decline of water quality. Kali Madiun is a sub-watershed of Bengawan Solo Watershed that allegedly endured the impacts of land use change. This study aimed to investigate the impacts of land use change on the water quality index of Kali Madiun Sub-watershed. Land use change analysis was done by overlay analysis of spatial data including the maps of land use in 2010 and 2015. Samples were the surface water in the upper, middle and lower part of Kali Madiun Sub-Watershed. Water quality analysis was carried out by comparing the results of water quality parameter assessment based on Government Regulation No. 82 of 2001, while water quality index was figured out by an assessment based on the Decree of the Minister of Environment No. 115 of 2003. The results indicated that during the five years observation, there were land use changes in the upper, middle and lower part of Kali Madiun Sub-watershed. Several parameters increased in 2010 to 2015, namely: TDS, BOD, COD, nitrate, detergents, oils and greases. Pollution index shifted from slightly polluted in 2010 into moderately polluted in 2015. We propose a strategy to solve these problems by the involvement of stakeholders and the participation of local community in managing both domestic and industrial wastes. Also, it should be supported by palpable regulations related to land conversion. Furthermore, it is expected that the effort will reduce the potential of pollution and improve the water quality.
PEMANFAATAN GULMA LAHAN GAMBUT SEBAGAI BAHAN BAKU BIO-BRIKET Pranatasari Dyah Susanti; Reni Setyo Wahyuningtyas; Adnan Ardhana
Jurnal Penelitian Hasil Hutan Vol 33, No 1 (2015): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.2015.33.1.35-46

Abstract

Gulma tersedia secara melimpah dan tumbuh di lahan gambut,tetapi sayangnya belum dimanfaatkan secara luas. Gulma tersebut secara prospektif potensial untuk dimanfaatkan sebagai bahan baku bio-briket. Tujuan penelitian ini adalah untuk mengetahui kualitas bio-briket yang berasal dari 10 jenis gulma lahan gambut. Awalnya, setiap jenis gulma dikarbonasi menjadi serbuk arang. Serbuk arang tersebut kemudian dicampur dengan serbuk gergaji pada perbandingan 1:1, dan diaduk secara menyeluruh untuk mendapatkan campuran yang homogen. Selanjutnya campuran tersebut ditambah dengan bahan perekat dari tepung kanji. Bahan perekat tersebut sebelumnya disiapkan dengan memanaskan 5 g tepung kanji ke dalam 75 ml air. Setelah ditambahkan perekat, campuran homogen tersebut kemudian dipres untuk menjadi bio-briket, dan selanjutnya dioven pada suhu 60°C selama 24 jam atau dikeringkan di bawah panas matahari selama 2 hari. Parameter yang diuji meliputi nilai kalor, karbon terikat, kadar abu dan sulfur. Hasil penelitian menunjukkan bahwa gulma purun tikus (Elecharis ochrostachys Steud.) merupakan jenis yang menghasilkan bio-briket terbaik karena lebih unggul dari jenis lain pada parameter yang diuji secara keseluruhan yaitu nilai kalor (4.647,9 kal/g), karbon terikat (25,63%), kadar air (5,48%), kadar abu (8,78%) dan sulfur (0,55%).
ANALISIS SPASIAL TEKANAN PENDUDUK TERHADAP LAHAN PERTANIAN DI SUB DAS KEDUANG, KABUPATEN WONOGIRI, JAWA TENGAH Agus Wuryanta; Pranatasari Dyah Susanti
Jurnal Penelitian Sosial dan Ekonomi Kehutanan Vol 12, No 3 (2015): Jurnal Penelitian Sosial dan Ekonomi Kehutanan
Publisher : Pusat Penelitian dan Pengembangan Sosial, Ekonomi, Kebijakan dan Perubahan Iklim

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1505.191 KB) | DOI: 10.20886/jpsek.2015.12.3.149-162

Abstract

Population pressure on agricultural land is one of  the important parameters to determine the level of  watershed environment quality. High population pressure on agricultural land in a watershed can lead to land degradation and watershed ecosystems damage. The purpose of  research is to calculate and determine the level of  population pressure on agricultural land in the sub watershed and in each district in the sub watershed by using Geographic Information System (GIS). Population pressure on agricultural land is calculated by using Soemarwoto's formula (1985). The classification of  population pressure on agricultural land is based on the Decree of  the  Directorate General of  Land Rehabilitation and Social Forestry (RLPS,) Ministry of  Forestry of  Indonesia No. P.04/VSET/2009. The research was conducted in Keduang sub-watershed which is part of  water chatchment area of  Gajah Mungkur Reservoir in Wonogiri District, Central Java. The results showed that population pressure on agricultural land in Keduang Sub-watershed is categorized as “bad” with the value of  28.978,16. Girimarto, Jatipurno, Jatiroto, Jatisrono and Sidoharjo districts are categorized as “medium”, while Jatiyoso, Kismantoro, Ngadirojo, Nguntoronadi, Purwantoro, Slogohimo and Tirtomoyo districts are categorized as “bad” with the value more than 2.
KARAKTERISTIK DAN PERSEPSI PETANI TERHADAP INOVASI TEKNIK SOIL BIOENGINEERING UNTUK MITIGASI LONGSOR DI KABUPATEN BANJARNEGARA JAWA TENGAH (Characteristics and farmers’perception to Soil Bioengineering technique for mitigation of landslide at Banjarnegara Regency, Central Java ) Baharinawati Wilhan Hastanti; Pranatasari Dyah Susanti
Jurnal Penelitian Pengelolaan Daerah Aliran Sungai (Journal of Watershed Management Research) Vol 3, No 1 (2019): Jurnal Penelitian Pengelolaan Daerah Aliran Sungai (Journal of Watershed Managem
Publisher : Center for Implementation of Standards for Environmental and Forestry Instruments Solo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (967.356 KB) | DOI: 10.20886/jppdas.2019.3.1.45-58

Abstract

ABSTRACTSoil Bioengineering technique is a soil and water conservation technology innovation for landslide mitigation. The success of technological innovation is influenced by the perception and characteristic of the user community. This study aimed to determine the characteristics of farmers as potential users and their perceptions that were measured based on an assessment of characteristics of technology innovation. This study used a qualitative approach combined with the support of qualitative data quantification. Data collected consist of primary data and secondary data. Primary data include the characteristics of respondents and their perceptions of Soil Bioengineering innovation in the form of assessment variables consisting of certain indicators which are then measured using a Likert scale. The characteristics of farmers prospective users of Soil Bioengineering techniques are: 1) productive age, 2) lack of education (junior high school), 3) narrow land ownership (0.1 to 0.3 hectares), 4) the commodity planted is salak, 5) experience as farming (16 - 20 years) and, 6) medium/ middle income levels (3- 4.9 million rupiah per month). Farmer's perceptions are generally positive to Soil Bioengineering. Positive perception techniques if it was measured based on: 1) relative advantage, 2) compatibility, 3) simplicity, 4) trialability and 5) observability.Keywords: perception; community; innovation; technique; soil bioengineering; mitigation;landslide ABSTRAKTeknik Soil Bioengineering merupakan inovasi teknologi konservasi tanah dan air untuk mitigasi longsor. Keberhasilan inovasi teknologi ini dipengaruhi oleh persepsi dan karakteristik masyarakat pengguna. Penelitian ini bertujuan untuk mengetahui karakteristik petani sebagai calon pengguna dan persepsinya yang diukur berdasarkan penilaian terhadap karakteristik inovasi teknik Soil bioengineering. Penelitian ini menggunakan pendekatan kualitatif yang dipadukan dukungan kuantifikasi data kualitatif. Data yang dikumpulkan berupa data primer dan data sekunder. Data primer meliputi karakteristik responden dan persepsinya terhadap inovasi Soil Bioengineering yang berupa variabel-variabel penilaian yang terdiri dari indikator-indikator tertentu yang kemudian diukur dengan menggunakan skala Likert. Karakteristik petani calon pengguna Teknik Soil Bioengineering adalah: 1) berusia produktif, 2) berpendidikan rendah (SMP), 3) luas kepemilikan lahan yang sempit (0,1 sampai 0,29 hektar), 4) komoditi yang ditanam adalah salak, 5) Berpengalaman sebagai bertani (16 – 20 tahun) dan, 6) tingkat pendapatan yang sedang/ menengah (3- 4,9 juta rupiah per bulan). Persepsi petani umumnya positif terhadap teknik Soil Bioengineering. Mempunyai persepsi positif bila diukur berdasarkan: 1) keuntungan relatif, 2) kesesuaian, 3) kesederhanaan, 4) ketercobaan/ dapat dicoba dan 5) keteramatan/ dapat diamati.Kata kunci: persepsi; masyarakat; inovasi; teknik; soil bioengineering; mitigasi; longsor
ANALISIS KERENTANAN TANAH LONGSOR SEBAGAI DASAR MITIGASI DI KABUPATEN BANJARNEGARA (Vulnerability analysis as a basic for landslide mitigation in Banjarnegara Regency) Pranatasari Dyah Susanti; Arina Miardini; Beny Harjadi
Jurnal Penelitian Pengelolaan Daerah Aliran Sungai (Journal of Watershed Management Research) Vol 1, No 1 (2017): Jurnal Penelitian Pengelolaan Daerah Aliran Sungai (Journal of Watershed Managem
Publisher : Center for Implementation of Standards for Environmental and Forestry Instruments Solo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (709.149 KB) | DOI: 10.20886/jppdas.2017.1.1.49-59

Abstract

ABSTRACTWater erosion is one of the causes of degraded land and a decrease in land productivity. Improvement of degraded land needs to detect sources of erosion and vulnerability level of the degraded land. The research was conducted to predict the vulnerability of soil erosion and distribution of degraded land in order to support the implementation programme of Land Rehabilitation and Soil Conservation. The research was conducted in upper Solo Watershed. Soil erosion was predicted using Universal Soil Loss Equation (USLE). The analysis of Land Capability Class was undertaken to determine the suitability of current landuse with its capability. Analysis of critical land was based on the regulations of the Directorate General of Watershed Management and Social Forestry (BPDAS-PS) Nomor 4/V-SET/2013. The data used were DEM (Digital Elevation Model) Aster (30 m x 30 m), map of the Regional Physical Planning Program for Transmigration (RePPProT) scale 1: 250,000, map of forest area (1: 50,000) from BPKH (Forest Zone Determination Center), land cover map from BPKH (1: 50,000), Google Earth imagery, rainfall data from 93 rain stations and field surveys. The results show that the upper Solo Watershed is dominated by land categorized as potentially degraded (54%), followed by slightly degraded (35%), while land which is classified as degraded occupied 7% of the total watershed. The dominant land capability is categorized as Vth class and limited by soil erosion (89%). Dry land agriculture areas were found at land capability VIth and VIIth which should not utilized for agricultural activities. Implementation of agroforestry and teracing are alternatives to prevent further land degradation and to improve the current condition.Keywords: degraded; land; planning; watershed; rehabilitation ABSTRAKErosi oleh air merupakan salah satu penyebab terjadinya degradasi dan penurunan produktivitas lahan yang mengakibatkan lahan kritis. Upaya perbaikan lahan-lahan kritis perlu mendeteksi sumber-sumber penyebab erosi dan tingkat kekritisan lahan. Penelitian ini dilakukan untuk mengetahui tingkat erosi dan distribusi lahan kritis dengan tujuan agar penerapan program Rehabilitasi Lahan dan Konservasi Tanah dapat tepat sasaran dan lahan berfungsi optimal. Penelitian dilakukan di Daerah Aliran Sungai (DAS) Solo bagian hulu. Besarnya erosi tanah diprediksi dengan Universal Soil Loss Equation (USLE). Analisis KPL (Kemampuan Penggunaan Lahan) dilakukan untuk mengetahui kesesuaian penggunaan lahan dengan kemampuannya. Analisis lahan kritis didasarkan pada peraturan Ditjen Bina Pengelolaan DAS dan Perhutanan Sosial (BPDAS-PS) No.4/VSET/2013. Data yang digunakan berasal dari analisis DEM (Digital Elevation Model) Aster ukuran 30 m x 30 m, peta Regional Physical Planning Program for Transmigration (RePPProT) skala 1: 250.000, peta kawasan hutan skala 1: 50.000 dari BPKH (Balai Penetapan Kawasan Hutan), peta penutupan lahan BPKH skala 1: 50.000, Citra Google Earth, data hujan dari 93 stasiun hujan dan survey lapangan. Hasil penelitian menunjukkan bahwa DAS Solo bagian Hulu didominasi lahan yang potential kritis (54%), diikuti agak kritis (35%), dan yang kritis 7%. Kemampuan Penggunaan Lahan (KPL) yang dominan adalah kelas V dengan pembatas utama erosi (89%). Dijumpai areal tegalan pada lahan dengan KPL VI dan VII yang seharusnya tidak sesuai untuk pertanian. Upaya yang dilakukan untuk tetap mempertahankan areal yang belum kritis dan memperbaiki areal yang sudah kritis adalah penerapan agroforestri dan terasering.Kata kunci: degradasi; lahan; perencanaan; DAS; rehabilitasi
Dekomposisi Serasah dan Keanekaragaman Makrofauna Tanah pada Hutan Tanaman Industri Nyawai (Ficus variegate. Blume) Pranatasari Dyah Susanti; Wawan Halwany
Jurnal Ilmu Kehutanan Vol 11, No 2 (2017)
Publisher : Fakultas Kehutanan Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (471.497 KB) | DOI: 10.22146/jik.28285

Abstract

Penggunaan jenis-jenis tanaman cepat tumbuh diperlukan untuk memenuhi kebutuhan kayu. Meski demikian, informasi mengenai kesuburan tanah kerena penanaman jenis tersebut masih terbatas. Penelitian ini bertujuan mendapatkan data dan informasi mengenai produksi, laju dekomposisi serasah serta keragaman makrofauna tanah pada Hutan Tanaman Industri nyawai (Ficus variegate Blume) dengan tiga kelas umur yang berbeda. Penelitian ini menggunakan metode kuantitatif. Penentuan plot sampel dilakukan secara purposive dengan pertimbangan keterwakilan umur. Variabel yang diamati meliputi jumlah produksi serasah, laju dekomposisi serasah, serta makrofauna tanah menggunakan dua cara yaitu monolith atau pengambilan contoh tanah (PCT) untuk makrofauna tanah yang berada di dalam tanah, serta penggunaan perangkap sumuran (PSM) untuk makrofauna yang berada di permukaan tanah. Hasil penelitian menunjukkan pada tegakan umur 6 tahun memiliki laju dekomposisi serasah terbaik karena sebanyak 48,31% serasah terdekomposisi dengan laju 11%. Pada kelas umur ini keragaman makrofauna juga memiliki nilai tertinggi yaitu 1,08 meskipun masih berada dalam kategori rendah.Kata kunci: dekomposisi; kesuburan tanah; makrofauna; nyawai; serasah Litter Decomposition and Diversity of Soil Macrofauna on Industrial Plantation Forest of NyawaiAbstractThe use of fast-growing tree species is necessary to meet the demand of timber. However, the information with regard the fertility of the soil for planting of these species is still limited. This study aimed to obtain data and information on the litter production and its rate of decomposition as well as soil macrofauna diversity on Industrial Plantation Forest of nyawai (Ficus variegate. Blume) with three different age classes. This study used a quantitative method. Sample plots were determined purposively with consideration of the representation of age. The observed variables included the amount of production of litter, decomposition rate of litter, and soil macrofauna using two methods, i.e. monolith or soil sampling (PCT) for soil macrofauna underground the soil and trap wells (PSM) for macrofauna on soil surface. The results showed in the 6-year-old stands showed the best litter ecomposition rates, since 48.31% of litter was decomposed at a rate of 11%. At this age class, diversity of macrofauna also has the highest score as 1.08, although that value was still in the low category. 
PEMANFAATAN GULMA LAHAN GAMBUT SEBAGAI BAHAN BAKU BIO-BRIKET Pranatasari Dyah Susanti; Reni Setyo Wahyuningtyas; Adnan Ardhana
Jurnal Penelitian Hasil Hutan Vol. 33 No. 1 (2015): Jurnal Penelitian Hasil Hutan
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.2015.33.1.35-46

Abstract

Weeds are abundantly available, which grow on peat swamps, but unfortunately have not yet been widely utilized. Those weeds can be prospectively potential as raw material for bio-briquettes. In relevant, this research aimed to look into the qualities of bio-briquettes manufactured from 10 species of peat swamp weeds. Initially, each weed species was carbonized and then shaped into charcoal powder. The resulting weed-charcoal powder was then mixed with wood sawdust at 1:1 ratio (w/w), and agitated thoroughly to obtain homogenous stuff. Afterwards, the homogenous stuff was added with starch-derived binder (adhesive). Such adhesive was previously prepared by heating 5 g tapioca-starch flour in 75 ml of water. The starch-added stuff was then pressed into bio-briquette, and further put in the oven at 60°C for 24 hours, or just dried under the sunlight heat for 2 days. The parameters as examined on the dried bio-briquette comprised calorific value, moisture content, fixed-carbon content, ash content, and sulfur content. Results revealed that the weeds of purun tikus (Eleocharis orrostachys Steud.) species was regarded as the best for bio-briquette manufacture, as it excelled other species in the overall examined parameters, i.e. calorific value (4,647.9 cal/g), fixed carbon (25.63%), moisture content (5.48%), ash content (8.78%) and sulfur (0.55%).