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Simulasi Perubahan Penggunaan Lahan Terhadap Karakteristik Hidrologi Daerah Aliran Sungai Ciliman: Simulation of Land Use Change Against on Hidrological Characteristics of the Ciliman Watershed Leonard Kristofery; Kukuh Murtilaksono; Dwi Putro Tejo Baskoro
Jurnal Ilmu Tanah dan Lingkungan Vol 21 No 2 (2019): Jurnal Ilmu Tanah dan Lingkungan
Publisher : Departemen Ilmu Tanah dan Sumberdaya Lahan, Fakultas Pertanian, IPB University

Daerah Aliran Sungai (DAS) Ciliman merupakan salah satu DAS yang berada di Kabupaten Lebak dan Kabupaten Pandeglang dengan luas total DAS ± 500 km2. Banjir sering terjadi di DAS Ciliman akibat meluapnya anak-anak sungai Ciliman, karena konversi penggunaan lahan di daerah hulu Ciliman sehingga pada waktu musim penghujan, air hujan tidak meresap kedalam tanah tapi langsung menjadi air limpasan. Penerapan Konservasi Tanah dan Air (KTA) merupakan salah satu upaya untuk meningkatkan kualitas DAS Ciliman. Studi ini bertujuan untuk mensimulasikan beberapa teknik KTA sebagai upaya pengelolaan DAS Ciliman yang lebih baik dan menetapkan skenario penggunaan lahan yang terbaik sesuai dengan kondisi biofisik DAS Ciliman. Penelitian ini menggunakan model SWAT sebagai alat untuk mensimulasikan beberapa skenario teknik KTA di DAS Ciliman. Skenario yang disimulasikan adalah: 0) Penggunaan lahan existing, 1) Penerapan fungsi kawasan hutan, 2) Penerapan teknik Konservasi Tanah dan air menggunakan RTK RHL dari BPDAS Ciliwung-Citarum, 3) Penerapan Rencana Tata Ruang Wilayah. Hasil penelitian menunjukkan bahwa skenario 2 (RTK RHL) merupakan skenario terbaik dibandingkan dengan skenario yang lainnya. Skenario ini mampu menurunkan rasio Qmax/Qmin sebesar 31.63% dibandingkan skenario yang lainnya. Skenario 2 juga dapat menurunkan koefisien aliran tahunan sebesar 24% dan aliran permukaan langsung (direct runoff) sebesar 23.55% dan meningkatkan aliran bawah permukaan sebesar 16.20 % serta water yield sebesar 1.77%.

ANALISIS WAVELET DAN VARIABILITAS TEMPORAL HIDROKLIMATOLOGI DAERAH ALIRAN SUNGAI (STUDI KASUS SUB-DAS CISANGKUY KABUPATEN BANDUNG) Dadang Subarna; M Yanuar J Purwanto; Kukuh Murtilaksono; Wiweka Wiweka
Berkala Perikanan Terubuk Vol 40, No 2 (2012): Juli 2012
Publisher : Fakultas Perikanan dan Kelautan, Universitas Riau

The research was conducted in the Sub Watershed Cisangkuy of theUpper Citarum Watershed in the Bandung regency. Cisangkuy river playsimportant role in the water supply to the population of Bandung regency andBandung city. In the last ten years, the debit of the river was decreased at dryseason but increased at rainy season that causes of flood in some places. It isneeded to research the variability of hydroclimatology at the region. The monthlyrainfall and debit in range of 2001-2011 was processed using the coefficient ofvariation (CV), wavelets and moving average analysis. The result of thecoefficient of variation and wavelets analysis show the monthly rainfall of fourweather stations: Cileunca, Kertamanah, Cipanas and Ciherang have the CV of78%, 82%, 84%, 70% respectively and show the dominant oscillation around 8-16months. The debit of two hydrology stations: Pataruman and Kamasan have theCV of 97%, 86% respectively and show the dominant oscillation around 128months and 64 months. The analysis of moving average with the simple,exponential, adaptive methods show the increase of five yearly debit significantlyin the range of observed data which cause of the flood in the Kamasan Banjaranregion. The 8-16 months oscillation is associated with the apparent position of theSun between the Tropics of Cancer and Capricorn which cause regional variationsin the intensity of monsoon and it’s called annual oscillation. The 128 monthsoscillation of debit is associated with the ten to twelve (TTO) years oscillation inthe tropical tropospheric temperature. While 64 months oscillation is associatedwith the the tropical Pacific phenomena El Niño (warm condition) and La Niña(cold conditions) are the cause of 2-7 years oscillations which famous with ENSOcycle.Keywords: Watershed, Rainfall, Debit, Variability, Hidroclimatology, Wavelets,Moving Average, Oscillation

Model Pemberdayaan Masyarakat melalui Pengolahan Kopi di Desa Mandiri Energi Yohanes Aris Purwanto; Kukuh Murtilaksono; Sri Malahayati Yusuf
Agrokreatif: Jurnal Ilmiah Pengabdian kepada Masyarakat Vol. 1 No. 1 (2015): Agrokreatif Jurnal Ilmiah Pengabdian kepada Masyarakat
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/agrokreatif.1.1.28-34

Development of energy self-sufficient village based on the local resources is purposed to reduce the poverty, to create the job opportunities as well as to substitute the fossil fuels. Energy self-sufficient village is also as sociated with the development of the productive economy. For the areas closed to national park, the development of the productive economy is important because it can reduce community activities for reaching the forest. Lebakpicung is energy self-sufficient village based on microhydro. This village has potency on coffee production. However, only dried coffee beans are produced from this village. The purpose of this community empowerment activity in Energy self-sufficient village was to utilize idle electricity from microhydro during day time as energy resource for coffee processing. This activity was carried out through training activity on the use of coffee processing machinery and packaging technology. The training participants were the community members who has activity on coffee processing.

ANALISIS CURAH HUJAN DAN DEBIT MODEL SWAT DENGAN METODE MOVING AVERAGE DI DAS CILIWUNG HULU Defri Satiya Zuma; Kukuh Murtilaksono; Yuli Suharnoto
Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Vol. 7 No. 2 (2017): Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (JPSL)
Publisher : Graduate School Bogor Agricultural University (SPs IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jpsl.7.2.98-106

Watershed can be regarded as a hydrological system that has a function in transforming rainwater as an input into outputs such as flow and sediment. The transformation of inputs into outputs has specific forms and properties. The transformation involves many processes, including processes occurred on the surface of the land, river basins, in soil and aquifer. This study aimed to apply the SWAT model in Ciliwung Hulu Watershed, asses the effect of average rainfall on 3 days, 5 days, 7 days and 10 days of the hydrological characteristics in Ciliwung Hulu Watershed. The correlation coefficient (r) between rainfall and discharge was positive, it indicated that there was an unidirectional relationship between rainfall and discharge in the upstream, midstream and downstream of the watershed. The upper limit ratio of discharge had a downward trend from upstream to downstream, while the lower limit ratio of discharge had an upward trend from upstream to downstream. It showed that the discharge peak in Ciliwung Hulu Watershed from upstream to downstream had a downward trend while the baseflow from upstream to downstream had an upward trend. It showed that the upstream of Ciliwung Hulu Watershed had the highest ratio of discharge peak and baseflow so it needs the soil and water conservations and technical civil measures. The discussion concluded that the SWAT model could be well applied in Ciliwung Hulu Watershed, the most affecting average rainfall on the hydrological characteristics was the average rainfall of 10 days. On average rainfall of 10 days, all components had contributed maximally for river discharge.

Pengaruh pemberian inokulan Burkholderia cenocepacia dan bahan organik terhadap sifat fisik tanah berpasir Effect of the inoculation of Burkholderia cenocepacia and organic materials on physical properties of a sandy soil Laksmita Prima SANTI; . SUDARSONO; Didiek Hadjar GOENADI; Kukuh MURTILAKSONO; Dwi Andreas SANTOSA
E-Journal Menara Perkebunan Vol 78, No 1: Juni 2010
Publisher : INDONESIAN RESEARCH INSTITUTE FOR BIOTECHNOLOGY AND BIOINDUSTRY

AbstractSoil aggregation is a dynamic and very important factor for the development of agricultural soil functions. Unstable soil aggregation in a sandy soil type is a limiting factor for plant growth. The aim of this study was to investigate theinfluence of a exopolysaccharide-producing bacterium and organic material on some physical properties of a sandy soil. A highly potential bacterium for exopolysaccharides production, i.e Burkholderia cenocepacia, was isolated froma sandy soil located at Kotawaringin Barat, Central Kalimantan. The isolated bacterium is capable on improving aggregate’s stability of a soil with about 60% sand fraction [medium sand fraction (MSF)]. Interaction between available water and electric conductivity with aggregate stability index has significant correlation in medium sand fraction inoculated by 109 CFU of B. cenocepacia suspension, i.e. r = 0.806* and r=0.966**, respectively. Organic materials and its combination with the addition of 108 CFU B. cenocepacia suspension treatments could increase the aggregate stability index but have no effects on bulk density and total pore space values in an artificial condition of medium sand fraction. AbstrakAgregasi tanah bersifat dinamis dan merupakan faktor penting untuk pengembangan fungsi tanah pertanian. Ketidakstabilan agregat tanah pada jenis tanah berpasir merupakan faktor pembatas untuk pertumbuhan tanaman.Penelitian ini bertujuan untuk mengetahui pengaruh eksopolisakarida bakteri dan bahan organik terhadap beberapa sifat fisik bahan tanah berpasir. Satu bakteri potensial penghasil eksopolisakarida yaitu Burkholderia cenocepacia telah berhasil diisolasi dari bahan tanah berpasir asal Kotawaringin Barat, Kalimantan Tengah. Bakteri ini dapat meningkatkan kemantapan agregat bahan tanah dengan kandungan fraksi pasir sekitar 60% [fraksi pasir sedang (FPS)]. Hubungan antara air tersedia dan konduktivitas elektrik terhadap indeks kemantapan agregat sangat nyata pada bahan tanah FPS yang diinokulasi dengan 109 CFU suspensi B. cenocepacia masing-masing r = 0,806* dan = 0,966**. Perlakuan bahan organik dan kombinasinya dengan penambahan 109CFU suspensi B. cenocepacia dapat meningkatkan indeks kemantapan agregat tetapi tidak mempengaruhi nilai kerapatan lindak dan total ruang pori di dalam fraksi pasir sedang.

Pengaruh pemberian inokulan Burkholderia cenocepacia dan bahan organik terhadap sifat fisik tanah berpasir Effect of the inoculation of Burkholderia cenocepacia and organic materials on physical properties of a sandy soil Laksmita Prima SANTI; . SUDARSONO; Didiek Hadjar GOENADI; Kukuh MURTILAKSONO; Dwi Andreas SANTOSA
Menara Perkebunan Vol. 78 No. 1: 78 (1), 2010
Publisher : INDONESIAN OIL PALM RESEARCH INSTITUTE

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22302/iribb.jur.mp.v78i1.74

AbstractSoil aggregation is a dynamic and very important factor for the development of agricultural soil functions. Unstable soil aggregation in a sandy soil type is a limiting factor for plant growth. The aim of this study was to investigate theinfluence of a exopolysaccharide-producing bacterium and organic material on some physical properties of a sandy soil. A highly potential bacterium for exopolysaccharides production, i.e Burkholderia cenocepacia, was isolated froma sandy soil located at Kotawaringin Barat, Central Kalimantan. The isolated bacterium is capable on improving aggregate’s stability of a soil with about 60% sand fraction [medium sand fraction (MSF)]. Interaction between available water and electric conductivity with aggregate stability index has significant correlation in medium sand fraction inoculated by 109 CFU of B. cenocepacia suspension, i.e. r = 0.806* and r=0.966**, respectively. Organic materials and its combination with the addition of 108 CFU B. cenocepacia suspension treatments could increase the aggregate stability index but have no effects on bulk density and total pore space values in an artificial condition of medium sand fraction. AbstrakAgregasi tanah bersifat dinamis dan merupakan faktor penting untuk pengembangan fungsi tanah pertanian. Ketidakstabilan agregat tanah pada jenis tanah berpasir merupakan faktor pembatas untuk pertumbuhan tanaman.Penelitian ini bertujuan untuk mengetahui pengaruh eksopolisakarida bakteri dan bahan organik terhadap beberapa sifat fisik bahan tanah berpasir. Satu bakteri potensial penghasil eksopolisakarida yaitu Burkholderia cenocepacia telah berhasil diisolasi dari bahan tanah berpasir asal Kotawaringin Barat, Kalimantan Tengah. Bakteri ini dapat meningkatkan kemantapan agregat bahan tanah dengan kandungan fraksi pasir sekitar 60% [fraksi pasir sedang (FPS)]. Hubungan antara air tersedia dan konduktivitas elektrik terhadap indeks kemantapan agregat sangat nyata pada bahan tanah FPS yang diinokulasi dengan 109 CFU suspensi B. cenocepacia masing-masing r = 0,806* dan = 0,966**. Perlakuan bahan organik dan kombinasinya dengan penambahan 109CFU suspensi B. cenocepacia dapat meningkatkan indeks kemantapan agregat tetapi tidak mempengaruhi nilai kerapatan lindak dan total ruang pori di dalam fraksi pasir sedang.

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