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Journal : Sains Tanah

ANALISIS ALTERNATIF PENGGUNAAN LAHAN UNTUK MENJAMIN KETERSEDIAAN AIR DI DAS KONAWEHA PROVINSI SULAWESI TENGGARA La Baco S; Naik Sinukaban; Yanuar J Purwanto; Bunasor Sanim; Suria Darma Tarigan
Sains Tanah - Jurnal Ilmu Tanah dan Agroklimatologi Vol 8, No 2 (2011)
Publisher : Faculty of Agriculture, Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15608/stjssa.v8i2.2

Abstract

Title : The Analysis of Land Use Alternatives to Ensure Water Supply at Konaweha Watershed Southeast Sulawesi Province. Fenomena  of decreasing  water supply and increasing  water demand occurred at Konaweha watershed.   Konaweha  watershed  shed is a priority watershed  in Southeast  Sulawesi  Province due to its crucial function. Land use changes were suspected to be the cause of decreasing water supply. One effect of this condition  was maximum  discharge  increase  and minimum  discharge decrease of Konaweha River resulted in water deficit.   Research objectives were (1) to evaluate the effect of land use changes on hydrologic condition of Konaweha watershed;  (2) to evaluate the water supply and water demand as well as supply and demand water balance at Konaweha watershed,  and  (3) to  formulate  land  use  alternatives  and  management  policy  of Konaweha watershed.   This research had been conducted at Konaweha watershed for 10 months e.g. from June  2009  to March  2010.  The average  declining  of forest  width  during  1991‐1999  was  1.25 percent/year,  2001‐2005  was 0.52 percent/year  and 2006‐2011  was 0.90 percent/year.  In the same time the availability of minimum discharge as a water supply was decrease. There was no deficit on annual water supply until 2050 but monthly distribution  of hydrograph  caused water deficit in September started from 2016.  Proportion of maintenance  cost for watershed function at  Kendari  Municipality  was  35  percent  while  at  the  District  of  Konawe,  South  Konawe  and Kolaka were 28 percent,  15 percent, and 22 percent  respectively  from total economic  value of water  at  Konaweha   watershed.   Forest  economic   value  including   flora  and  fauna,  carbon absorption,  option value, bequest  value and existence  value was IDR 14,974,716/hectare.  Five alternative  of  land  use  at  Konaweha  watershed  were:  (1)  Scenario  1:  30  percent  forest,  45 percent plantation, 6 percent mix garden and 1 percent bush; (2) Scenario 2: 35 percent forest, 45 percent  plantation,  5 percent  mix  garden  and  1 percent  bush;  (3)  Scenario  3:  44  percent forest,  35  percent  plantation,  5  percent  mix  garden  and  1  percent  bush;  (4)  Scenario  4:  34 percent forest, 45 percent plantation, 7 percent mix garden and 1 percent bush; and (5) Scenario 5: 40 percent forest, 35 percent plantation, 5 percent mix garden and 2 percent bush. Scenario 4 were  not  appropriate   while  scenario  1,  2,  3  and  5  were  appropriate  to  applied  in  upper Konaweha  watershed.  Scenario 3 with a minimal of 44 percent of forest was the best land use alternative.Keywords: watershed, land use change, water supply, water demand
KAJIAN KEMAMPUAN LAHAN PADA USAHATANI LAHAN KERING BERBASIS TEMBAKAU DI SUB-DAS PROGO HULU Jaka Suyana; Naik Sinukaban; Bunasor Sanim; M.Yanuar J Purwanto
Sains Tanah - Jurnal Ilmu Tanah dan Agroklimatologi Vol 7, No 1 (2010)
Publisher : Faculty of Agriculture, Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15608/stjssa.v7i1.46

Abstract

Title : The Study of Land Capability on Tobacco-Based Upland Farming at Progo Hulu Sub-Watershed. The recent and also the future problems for Indonesian concerning with agricultural environment resources are land degradation and water resources restrictiveness. Agricultural technique without awareness to concerning to soil and water conservation principles on steep and high rainfall area had caused severe erosion and land degradation at upland area of Progo Hulu sub-watershed. Land Degradation that promoted by erosion at Progo Hulu sub-watershed contributed negative effects at on-site and out-site area. The land capability analysis shows that tobacco-based farming system at Progo Hulu sub watershed dominated by class IV (3,624.93 ha; 49.00%), followed with class VI (2,488.82 ha; 33.64%), class III (697.99 ha; 9.43%), class V (450.73 ha; 6.09%), and class VII (136.06 ha; 1.84%). The main resistance factors are slope and erosion for class III; erosion, slope and surface rocks for class VI; and slope for class VII. Keywords: land capability, Progo Hulu Sub-watershed
ARAHAN KEBIJAKAN PENGENDALIAN EROSI DAN SEDIMENTASI DI SUB DAERAH ALIRAN SUNGAI KEDUANG KABUPATEN WONOGIRI Joko Sutrisno; Bunasor Sanim; Asep Saefuddin; Santun R.P. Sitorus
Sains Tanah - Jurnal Ilmu Tanah dan Agroklimatologi Vol 8, No 2 (2011)
Publisher : Faculty of Agriculture, Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15608/stjssa.v8i2.5

Abstract

Title : The Policy Direction for Controlling of Erosion and Sedimentation at Keduang Sub‐Watershed in Wonogiri Regency. Keduang Sub‐Watershed  is one of important sub‐watershed  at Bengawan Solo Watershed. Land  resources  management   at  Keduang  Sub‐Watershed   will  be  influence  of  environment quality,  physic (erosion,  sedimentation,  debit of Keduang  River),  chemistry  (water quality)  and socio economic aspect. This aim research to know the level of erosion and sedimentation  and to arrange  policy direction  for controlling  erosion and sedimentation  at Keduang  Sub‐Watershed, Wonogiri Regency.Research method which is used is descriptive. Data types which are obtained are secondarydata from Centre of Research and Development Technology of Watershed Management, Forestry Department,   BPS‐Statistic   of  Wonogiri   Regency   and   Agriculture   Department   of  Wonogiri Regency. Method of analysis’s data which is used in this research is Universal Soil Loss Equation (USLE)  Method  to predict  the soil erosion.  This research  method  also to arrange  modelling  of controlling erosion and sedimentation.Results   of  this   research   are:   the   level   of  erosion   in  Keduang   Sub‐Watershed   is  44 ton/ha/year   or  1.9  million  ton/year.   The  sediment   yield  from  Keduang   Sub‐Watershed   to Wonogiri  Basin  equal 164,000  ton/year.  Improving  of construction  terrace  can reduce  erosion and sedimentation.Keywords: land resources management, erosion, sedimentation, construction terrace
Co-Authors . Erwidodo . Kuntjoro AA Sudharmawan, AA Aang Munawar Abdul Kohar Mudzakir Ade Supandi Ade Supandi Adityawarman, Yudha Adler Hayman Manurung Agus Maulana Agus Wahyudi Ahmad Saifi Athoillah Ahmad Saifi Athoillah Aida Ratna Zulaiha Aisa Rurkinantia Amri Jahi Amril Aman Amru, M Kadafi Amzul Rifin Ana Yuliana Jasuni Ardianto, Luky Arief Daryanto Arief Daryanto Arief Daryanto Arief Daryanto Asep Kurnia Hidayat ASEP SAEFUDDIN Bambang S. Kusmuljono Bambang Trenggono Bimahri Qaulan Tsaqiela Bonar M Sinaga, Bonar M Bonar M. Sinaga Budi Suharjo Dadang Dadang DADANG DADANG Deden Kurniawan Dedi Budiman Hakim Dewayany Sutrisno, Dewayany Djati Kerami Djoni Hartono Dominicus Savio Priyarsono Dudi S. Hendrawan Dwi Rachmina Dwi Widodo Primantoro Dyan Vidyatmoko Dyan Vidyatmoko Eddi Wahyudi Eddi Wahyudi, Eddi Eriyatno . Erliza Noor Ernan Rustiadi Etty Riani Gendut Suprayitno Gunawan Sumodiningrat Hendra Wijaya Heny K Daryanto Hermanto Siregar Hermanto Siregar hidayati, iik yani Irawadi Jamaran Jaka Suyana Jaka Suyana Joko Sutrisno JOKO SUTRISNO Kukuh Murtilaksono La Baco S Latifa Hanum Leo Cahya Trias Putra Rachman Lilik Noor Yuliati Lukman M Baga Luky Adrianto Luluk Sulistiyono Luluk Sulistiyono M Parulian Hutagaol M Yanuar J Purwanto M. Parulian Hutagaol M. Said Didu M. Yanuar J. Purwanto M. Yogi Riyantama Isjoni Mahruddin Harahap Marimin , Mawardi Ps Bagindo Mawardi, Muhammad Ikhwanuddin Mercky Haryo Minto Yuwono Muhammad Fahrudin Muhammad Firdaus Muhammad Firdaus Muhammad Firdaus muhammad Firdaus Mulyono S. Baskoro Muryani Muryani Naik Sinukaban Naik Sinukaban Naik Sinukaban Naik Sinukaban Nunung Nuryartono Primasti Ramadhani Rahmat Ingkadijaya Rina Oktaviani Rina Oktaviani Rita Nurmalina Rita Nurmalis Riza Rahmanu Rudi C. Tarumingkeng Rudy C. Tarumingkeng Rui Andriano, Rui Safril Kemala Sampor Ali Santun R.P. Sitorus SANTUN R.P. SITORUS Setiadi Djohar Shally Alpriany Aisyah Slamet Budi Yuwono Slamet Hariadi Soekmana Soma Soepanto Soemokaryo Soesilo Hadimartono, Soesilo Sri Haryati Sugeng H. Wisudo Suharjo, Budi, Dr.Ir. MS Sulastri Sulastri Sumardjo Sunarti Sunarti Sunarti Sunarti Suria Darma Tarigan Surjono H. Sutjahjo Sutopo, Muhammad Fauzi Sutrisno Ali Syamsiar, Syamsiar Teguh Saptono Tobing, Adil Ujang Sumarwan Vidyatmoko, Dyan Widadi W. Widayat Wiwiek Rindayati Yadi Suryadi Yandra Arkeman Yusman Saukat, Yusman Yusman Syaukat Yuwono Minto Yuwono, Minto Zaim Uchrowi