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Jurnal Penelitian Pengelolaan Daerah Aliran Sungai

JPPDAS
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Published by Balai Litbang Teknologi Pengelolaan Daerah Aliran Sungai

ISSN : 25795511 EISSN : 25796097 DOI : -

Core Subject : Agriculture,

Agriculture, Biological Sciences & Forestry

Jurnal Penelitian Pengelolaan Daerah Aliran Sungai (JPPDAS) ) is an official publication that publishes scientific papers of research results in the field of watershed management. This Journal was published primarily by Watershe Management Technology Center on April 2017. Journal scopes include are land and vegetation management, soil and water conservation, land rehabilitation, hydrology, social, economic, institutional, remote sensing and Geographic Information Systems (GIS) that support watershed management technologies.

Arjuna Subject : -

Articles 67 Documents

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HASIL AIR HUTAN JATI PADA DUA SUB DAERAH ALIRAN SUNGAI DENGAN LUAS BERBEDA (Water yield of Teak Forest at two different catchment sizes) Tyas Mutiara Basuki; Rahardyan Nugroho Adi; Edi Sulasmiko
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

Effects of catchment sizes on hydrological responses were still being debated. Therefore, a study on hydrological effects of different catchment sizes was conducted in teak catchments. The catchments were Cemoro and Modang with their sizes were 13.5 and 3.4 km2, respectively. Research sites were in Forest Management Sub Unit (BKPH) Pasar Sore, Forest Management Unit (KPH) Cepu, and administratively were located in Blora Regency. Physical conditions of these catchments were similar. Rainfall was measured everyday at 07.00 a.m. Stream Water Level (SWL) data were collected from tide gauge measurements which were constructed at the outlet of the catchments. Discharge data were obtained by convertion of the SWL into discharge based on regression equations between direct discharge measurements in the field and SWL. Data analysed from 2001 to 2015 showed that Cemoro catchment had higher annual runoff than Modang. Generally, monthly runoff from Cemoro catchment was higher than Modang catchment, only for several years the Modang catchment had higher monthly runoff than Cemoro catchment. Annual runoff coefficient of Cemoro catchment was always higher than Modang catchment during 2001 to 2015. The runoff coefficient ranged from 0.20 to 0.62 and from 0.06 to 0.38 for Cemoro and Modang catchments, respectively.

SEDIMENTASI DELTA SUNGAI CITARUM, KECAMATAN MUARA GEMBONG, KABUPATEN BEKASI (Sedimentation at Delta of Citarum River Muara Gembong District, Bekasi Regency) Paryono Paryono; Ario Damar; Setyo Budi Susilo; Rokhmin Dahuri; Heny Suseno
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

One of land use change impacts in the downstream of Citarum watershed is sedimentation. This study aimed to determine the total suspended solid and sediment load in the downstream of Citarum River. The Total Suspended Solid (TSS) samples were taken in three locations: the inlet of Jatiluhur reservoir, the outlet of Jatiluhur reservoir, and before the Citarum River estuary. The frequency of TSS samplings was twice a year i.e during the dry season and the rainy season at 2014. Analysis of TSS content was in accordance with SNI 06-6989.3-2004 using gravimetry method. The results showed that TSS at down stream Citarum River flow was 0.44 kg/m3, TSS at the inlet of Jatiluhur reservoir was 0.20 kg/m3, and TSS at the outlet of Jatiluhur reservoir was 0.02kg/m3. The total sediment in the inlet of Jatiluhur was 1.34 x 106ton/year, in the outlet of Jatiluhur reservoir was 0.14 x 106ton/year, and the flow sediment total to the Citarum River estuary was 1.79 x 106 ton/year. The Jatiluhur reservoir could reduce the potential for sediment total flowing into the sea as much as 1.20x 106tons/year. Area of sedimentation at the delta of Citarum River was 3,828.26 ha.

EVALUASI LAHAN UNTUK MENILAI KINERJA SUB DAERAH ALIRAN SUNGAI RAWAKAWUK (Land evaluation to assess performance of Rawakawuk Sub Watershed) Nining Wahyuningrum; Pamungkas Buana Putra
Jurnal Penelitian Pengelolaan Daerah Aliran Sungai (Journal of Watershed Management Research) Vol 2, No 1 (2018): Jurnal Penelitian Pengelolaan Daerah Aliran Sungai (Journal of Watershed Managem
Publisher : Center for Implementation of Standards for Environmental and Forestry Instruments Solo

ABSTRACTLand is an important resource in a watershed because of its position as a processor. The condition of a watershed depends on the land management and its compliance with its performance. The purpose of the research is to evaluate the performance of Rawakawuk Sub Watershed from the land aspects. Guidelines of Watershed Evaluation and Monitoring, i.e. the Regulation of Director General of Land Rehabilitation and Social Forestry or PerDirjen 04/V-Set/2009 was used to analyze parameters of Vegetation Cover Index (VCI), Land Use Suitability Index (LUSI), and Erosion Index (EI). The results showed that the study area has 53% of pine and teak monoculture, and 20.7% of agroforestry private forest, therefore the VCI is 73.2%. The LUSI is 93.7% which implies that 93.7% of the area is suitable to its land capability. In addition, 36.1% of the area is exposed to very severe erosion. Since the solum depth is relatively deep (>90 cm), the tolerable soil erosion is high and EI tends to be small. Around 60.3% of the area has an average EI of 71.1 which is classified as moderate. Based on the cumulative value of VCI, LUSI and EI, Rawakawuk Sub Watershed can be classified as slightly good. However, conservation practices should be applied to the very severe erosion areas. Keywords: watershed; forest; degradation; performance; permanent vegetation ABSTRAKLahan merupakan sumber daya penting dalam pengelolaan Daerah Aliran Sungai (DAS) karena kedudukannya sebagai prosesor. Baik buruknya suatu DAS tergantung kepada pengelolaan dan kesesuaian lahan dengan daya dukungnya. Tujuan penelitian ini adalah melakukan evaluasi kinerja Sub DAS Rawakawuk dari aspek lahan. Analisis dilakukan dengan menggunakan Pedoman Monitoring Evaluasi DAS, Peraturan Direktur Jenderal Rehabilitasi Lahan dan Perhutanan Sosial Nomor 04/V-Set/2009 dengan parameter: Indeks Penutupan Vegetasi (IPV), Indeks Kesesuaian Penggunaan Lahan (IKPL), dan Indeks Erosi (IE). Hasil analisis menunjukkan bahwa di sub DAS tersebut 53% merupakan hutan produksi pinus dan jati berpola monokultur dan 20,7% hutan rakyat berpola agroforestri dengan nilai IPL 73,2%, nilai IKPL 93,7% yang menunjukkan 93,7% lahan sesuai dengan kelas kemampuannya. Berdasarkan perhitungan erosi, 36,1 % area memiliki tingkat erosi sangat berat (SB), namun kondisi solum tanah yang tebal (>90 cm) mengakibatkan nilai erosi yang diperkenankan juga tinggi, sehingga nilai indeks erosi cenderung kecil. Pada 60,3% lahan Sub DAS Rawakawuk memiliki indeks erosi rata-rata sebesar 71,1% yang termasuk pada kategori sedang. Berdasarkan nilai kumulatif IPL, IKPL dan IE disimpulkan bahwa lahan Sub DAS Rawakawuk mempunyai kinerja dalam kategori agak baik, namun perlu penerapan konservasi tanah pada beberapa lokasi dengan kelas erosi sangat berat.Kata Kunci: DAS; hutan; degradasi; daya dukung; vegetasi permanen

PENDUGAAN INFILTRASI MENGGUNAKAN DATA NERACA AIR DI SUB DAERAH ALIRAN SUNGAI WATUJALI, GOMBONG (Estimation of infiltration based on water balance method at Watujali Sub Watershed, Gombong) Irfan Budi Pramono; Rahardyan Nugroho Adi
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

Infiltration rate in a watershed is very important for water management. There are many methods for estimating the rate of infiltration in a watershed. Among of them are direct measurements, hydrograph analysis and water balance calculation. The purpose of this study was to estimate infiltration in the sub watershed under pine forest. The method was based on a relationship between water balance and regression of monthly rainfall and discharge. The results showed that the infiltration rate of pine forest in Watujali Sub Watershed range from 125 mm/year up to 1,193 mm/year. The infiltration rate was highly depended on rainfall as the input. In 2010 with 5,826 mm rainfall, the infiltration rate reached 1,193 mm/year. Estimation of infiltration using water balance data was easy to implement because it only used data of streamflow, rainfall and evapotranspiration.

TRADISI DAN RELIGI SEBAGAI UPAYA KONSERVASI MATA AIR MASYARAKAT PERDESAAN: STUDI KASUS MASYARAKAT KECAMATAN GIRIMULYO, KABUPATEN KULON PROGO (Tradition and religion as means of the rural community in spring conservation: a case study of Girimulyo Distric, Kulon Progo Region) Sudarmadji Sudarmadji; Fajar Sugiarto; Ratna Destra Kurniasari; Indra Agus Riyanto; Ahmad Cahyadi; Sudrajat Sudrajat
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

Tradition and religion interact closely to the rural community, which is shown in their culture. This concept was applied to spring conservation in the rural area. The objective of this research was to show the role of tradition and religion in the use of spring based conservation by rural community. This research used a case study method. Data were collected by field surveys and interviews. The respondents were chosen randomly because the characteristic of the community was homogenous. The results of this research showed that tradition and religion in form of cultural ritual called spring cleaning (nguras sumber) and “be grateful to God” (slametan) had been capable to keep the sustainability of water resources in the spring, both the quantities and qualities of water. Nguras Sumber and Slametan were directed by a traditional leader called “Juru Kunci” followed by the community. The water resources were used for domestic water consumption, tourism, agriculture, and livestock throughout the year, even excessive in the rainy season. Therefore, the culture of Nguras Sumber and Slametan could be maintained as a form of spring’s conservation.

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

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

PERBANDINGAN PREDIKSI HASIL SEDIMEN MENGGUNAKAN PENDEKATAN MODEL UNIVERSAL SOIL LOSS EQUATION DENGAN PENGUKURAN LANGSUNG (Comparison of sediment yield from prediction using Universal Soil Loss Equation with direct measurement) Diah Auliyani; Wahyu Wisnu Wijaya
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

Low level of sedimentation is a success indicator of watershed management. Measurement of sedimentation can be conducted directly or through erosion prediction approach. This research aimed to compare sediment yield from prediction by USLE erosion approach using three types formulations of rainfall erosivity with direct measurement. The field data were collected during 2015 in Lowereng Sub Watershed, Sempor District of Kebumen Regency. The slope steepness was derived from ASTER Global Digital Elevation Model and land cover was obtained from World View 2012. Three methods for estimating rainfall erosivity were Utomo and Mahmud, Bols, and Lenvain equations. The USLE applied for every land unit. By considering Sediment Delivery Ratio (SDR), the predicted soil erosion from USLE was converted into sediment yield. The direct measurement of sediment yield was conducted by taking suspended sediment in the outlet of sub watershed. This research indicates that the predicted sediment yield calculated using USLE approach was higher than the direct measurement. The predicted sediment yield using Lenvain’s equation was 3.49 ton/ha (196%), which was the closest to the direct measurement (1.18 ton/ha).

PERAN CEMARA LAUT (Casuarina equisetifolia) DALAM PERBAIKAN IKLIM MIKRO LAHAN PANTAI BERPASIR DI KEBUMEN (The role of Casuarina equisetifolia on micro climate improvement of sandy beach land at Kebumen) Beny Harjadi
Jurnal Penelitian Pengelolaan Daerah Aliran Sungai (Journal of Watershed Management Research) Vol 1, No 2 (2017): Jurnal Penelitian Pengelolaan Daerah Aliran Sungai (Journal of Watershed Managem
Publisher : Center for Implementation of Standards for Environmental and Forestry Instruments Solo

Sandy beach is a marginal land, when it is not managed properly the conditions will be worsened and at the end it cannot be planted. This marginal land is aggravated by unfavorable conditions such as extreme high temperatures, the presence of salt vapor that causes the plants to die, and the lacking of water for plants. With regard to this matter, it is necessary to conduct a research that aims to determine the role of Casuarina equisetifolia in improving the microclimate of sandy beaches. The research was conducted on sandy beaches in Karanggadung, Petanahan Subdistrict, Kebumen since 2005, with climate observations from 2009 to 2014. The climate observation method is by measuring light, air temperature, humidity, air pressure and altitude. Each measurement used three repetitions for each location and measured twice a day: 07.00 and 16.00. The results showed that the existence of C. equisetifolia gave a positive effect on micro climate improvement at Karanggadung Beach, Kebumen which included: 1) decreasing light intencity from 1925 lux to 213 lux, 2) decreasing air temperature from 31 °C to 25 °C, 3) increasing air humidity from 84% to 100%, 4) increasing air pressure from 1007 mb to 1008 mb, and 5) increasing sand dune level from 27 m ASL (Above Sea Level) to 35 m ASL.

SIMULASI MODEL DINAMIK PENGARUH LEGUME COVER CROPS (LCC) TERHADAP LIMPASAN DAN SEDIMEN DI LAHAN HUTAN TANAMAN (Dynamic model simulation of the effects of Legume Cover Crops (LCC) on runoff and sediment in plantation forest land) Agung Budi Supangat; Putu Sudira; Haryono Supriyo; Erny Poedjirahajoe
Jurnal Penelitian Pengelolaan Daerah Aliran Sungai (Journal of Watershed Management Research) Vol 2, No 1 (2018): Jurnal Penelitian Pengelolaan Daerah Aliran Sungai (Journal of Watershed Managem
Publisher : Center for Implementation of Standards for Environmental and Forestry Instruments Solo

ABSTRACTDeclining productivity of plantation forest due to low soil fertility. This condition has forced managers to make efforts in manipulating the tree growing environment. One such effort is by introducing cover crops species from legumes (LCC), to control surface runoff, soil erosion and input nutrient into the soil. The research aims to determine the effectiveness of LCC in controlling total runoff and sedimentation in Eucalyptus pellita plantations, through dynamic model simulation. The dynamic model of STELLA version 9.0.2 was used to study water and nutrient cycles, focused on the application of LCC to reduce total runoff and sedimentation. The results showed that LCC could drop the total runoff of average 35% in the 1 - 2 years old. In the 1styear it decreased from 1,530 mm to 994 mm, while in the 2ndyear it decreased from 1,240 mm to 806 mm. The declining also occurred in the sediment content, in the 1st year it decreased from 12.20 tonnes/ha to 7.93 tonnes/ha, and the 2nd year it decreased from 6.63 tonnes/ha to 4.36 tonnes/ha. These research findings can be used by the environmental manager to minimize potential land degradation, especially during the post-harvest until the young plantations (0-2 years old) phases.Key words: plantation forest; E. pellita; dinamic model; legume cover crops; erosion; runoff ABSTRAKPenurunan produktivitas hutan tanaman akibat rendahnya tingkat kesuburan tanah memaksa pengelola melakukan berbagai upaya manipulasi lingkungan pertumbuhan. Salah satu upaya tersebut adalah introduksi tanaman penutup tanah dari jenis legum (LCC) untuk mengendalikan laju aliran permukaan dan erosi tanah serta input hara ke dalam tanah. Tujuan penelitian adalah untuk mengetahui efektivitas LCC dalam mengendalikan laju limpasan permukaan dan sedimentasi di hutan tanaman E. pellita, melalui simulasi pemodelan sistem dinamik. Model dinamik STELLA versi 9.0.2 dimanfaatkan untuk mempelajari siklus air dan hara yang terjadi, dengan fokus simulasi aplikasi LCC untuk mengurangi total limpasan dan sedimentasi. Hasil simulasi menyimpulkan pengaruh aplikasi LCC pada pascatebangan dapat menurunkan total limpasan pada tanaman berumur 1 sampai 2 tahun sebesar rata-rata 35%. Pada tahun pertama menurun dari 1.530 mm menjadi 994 mm, sedangkan pada tahun kedua menurun dari 1.240 mm menjadi 806 mm. Penurunan juga terjadi pada kandungan sedimen, pada tahun pertama menurun dari 12,20 ton/ha menjadi 7,93 ton/ha, dan tahun kedua menurun dari 6,63 ton/ha menjadi 4,36 ton/ha. Hasil tersebut dapat menjadi input bagi pengelola sebagai dasar pengelolaan lingkungan untuk meminimalkan potensi degradasi lahan khususnya pada fase pasca tebangan sampai tanaman muda (0-2 tahun).Kata kunci: hutan tanaman; E. pellita; model dinamik; legume cover crops; erosi dan runoff

KONDISI LINGKUNGAN DAN KARAKTERISTIK SOSIAL BUDAYA UNTUK PENGELOLAAN DAERAH ALIRAN SUNGAI (Studi Kasus pada Suku Dani di Jayawijaya, Papua) (Environmental conditions and socio-cultural characteristics for watershed management (Case study at Dani tribe, Jayawijaya, Papua)) Baharinawati W. Hastanti
Jurnal Penelitian Pengelolaan Daerah Aliran Sungai (Journal of Watershed Management Research) Vol 1, No 2 (2017): Jurnal Penelitian Pengelolaan Daerah Aliran Sungai (Journal of Watershed Managem
Publisher : Center for Implementation of Standards for Environmental and Forestry Instruments Solo

Upper of Mamberamo watershed located at Jayawijaya regency, a plain (valley) in Jayawijaya mountains, that known as the Baliem valley. In this valley lies Tariratu river (Idenburg river) which is a tributary of Mamberamo river. Dani tribe, the oldest tribe inhabits this fertile region. In addition to known as belligerent, Dani tribe known as swidden farmers with certain traditional wisdom to maintain the soil fertility. Environmental condition and socio-cultural characteristics community in managing the upper watershed influence the watershed management, especially in the downstream. This study aims to determine the environmental and socio-cultural characteristics of the Dani tribe in managing the natural resources in the upper watershed to support Mamberamo watershed management. This study was conducted at Wamena, Jayawijaya regency, Papua province. This research is qualitative descriptive research. Data collections was conducted by interviews and literature studies. The data were analysed qualitatively and described the environmental conditions and socio-cultural characteristics of people in the upper watershed of Mamberamo or Baliem watershed is the major element in the management of the Mamberamo watershed. The upper watershed has a conservation function to reduce land degradation. The Dani tribe in the upper Mamberamo has local wisdoms that support the vegetation, soil and water conservation’s function.

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