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Journal : Sains Tanah

Soil Classification and Land Suitability for Agroforestry of Solo Hulu Watershed Rahayu Rahayu
Sains Tanah - Jurnal Ilmu Tanah dan Agroklimatologi Vol 13, No 2 (2016)
Publisher : Faculty of Agriculture, Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15608/stjssa.v13i2.476

Abstract

Watershed requires management to diversify the function of sustainable biomass production, provide benefits for the socio-economic benefits and environmental aspects of land cover as a function of media production and water management regulator. It is known that upstream Solo watershed contributes sediment substantially to the silting of Gajah Mungkur reservoirs and carry sediment through Bengawan Solo river flow. Purpose of this study was to determine characteristics of soil and vegetation diversity in upstream Solo watershed area. Research was carried out by analysis of satellite observation and field survey with stratified random sampling method. Result showed that upstream Solo watershed is divided into six soil map units (SMU), soil was encountered into orders of Vertisols, Entisols, Alfisols and Inceptisols. Most areas of upstream Solo watershed was opened-vegetation with steep slope. Agroforestry type applied by public was simple agroforestry included mixed-cropping, barrier of bound and terrace and barrier of land ownership. Main vegetations were teak, mahogany and acacia. Land utilization was marginal with dry month length as an inhibitor factor.
MAPPING OF SOIL DEGRADATION POTENCY IN PADDY FIELD WONOGIRI, INDONESIA Mujiyo Mujiyo; Rahayu Rahayu; Reni Ustiatik; Dhika Sri Anggrahini
Sains Tanah - Jurnal Ilmu Tanah dan Agroklimatologi Vol 13, No 1 (2016)
Publisher : Faculty of Agriculture, Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15608/stjssa.v13i1.481

Abstract

Sustainability of paddy field becomes the main concern as the media of biomass production, thus it is needed a data and information about land characteristics to find out its degradation. Mapping of soil degradation potency in paddy field is an identification of initial soil condition to discover the land degradation potency. Mapping was done by overlaying map of soil, slope, rainfall and land use with standard procedures to obtain its value and status of soil degradation potency. Area mapping is an effective land for biomass production (natural forest, mixed farm, savanna, paddy field, shrub and dry field) with approximately 43,291.00 hectares (ha) in Sidoharjo, Girimarto, Jatipurno, Jatisrono, Jatiroto, Tirtomoyo, Nguntoronadi and Ngadirojo District. The result shows that soil degradation potency (SDP) in Districts of Sidoharjo, Girimarto, Jatipurno, Jatisrono, Jatiroto, Tirtomoyo, Nguntoronadi and Ngadirojo are very low (DP I) 0.00 ha (0.00%), low (DP II) 20,702.47 ha (47.82%), moderate (DP III) 15,823.80 ha (36,55%), high (DP IV) 6,764.73 ha (15.63%) and very high (DP V) 0.00 ha (0.00%). Paddy field is 22,036.26 ha or about 50.90% of all area as effective biomass production, its SDP considers as low (DP II) 16,021.04 ha (37.01%) and moderate (DP III) 6,015.22 ha (13,89%). Paddy field has a low SDP because it is commonly lies on flat area and conservation method by the farmer is maintaining the paddy bund and terrace. This study needs an advanced study to identify actual SDP through detail verification in the field, and also support by soil sample analysis in the laboratory. 
Land Surface Coverage, Main Vegetation and Physical Soil Characteristics of West Side of Lawu Mountain Rahayu Rahayu; Puguh Karyanto
Sains Tanah - Jurnal Ilmu Tanah dan Agroklimatologi Vol 12, No 2 (2015)
Publisher : Faculty of Agriculture, Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15608/stjssa.v12i2.248

Abstract

Sustainability of catchment area management of a mountain requeres identification the vegetation and condition of the major vegetation. This reserachs purpouse was characterizing major vegetation, coverage and  soil properties at 1000 m elevation sea level to the top of Lawu mountain. Survey was started by identification of every vegetation unit followed by taking soil sample that was analyzed in laboratory for identifying the properties. Sampling and  identification  conducted close by common climbing track line to the top, including Jogorogo and Cemoro Sewu East Java, and Cemoro Kandang and Sukuh Central java. Coverage of vegetation  used  sattellite immage landsad and was analyzed  by  Arview software. Results showed that intens and dense forest was 36,22% and the other was rare density forest. Major vegetation of Lawu mountain was Pinus (Pinus merkusii), Cemara (Casuarina equisatifolia), Tanganan (Schleptera sp), Akasia gunung (Acasia decurren), rumput vestuca, Cantigi (Vaccinium sp) kayu pasang (Lithocarpus pruinusa)  and vegetables on agriculture land. Every type of vegetation unit had different soil physycal properties of topsoil, while elevation had effect on soil bulk volume and porocity.