This study is aimed to evaluate soil degradation based on Standard Criteria of Soil Degradation for Biomass Production under Indonesian Government Regulation No. 150 in 2000. Conducted at Jatipurno District, Keduang Sub-Watersheds, between October and December 2016, at seven selected land units, each land unit is represented by four sample points. The selection of sampling area is according to Stratified Purposive Sampling method. The evaluation of soil degradation is carried out by determining the threshold value and key factors of soil characteristics based on the Standard Criteria of Soil (matching process), which lead to degradation. The results showed that the entire soil at Jatipurno District is slightly degraded. The most extensive soil degradation 2,869.31 ha area (69.60%) is caused by a low colloid fraction, high bulk density, low total porosity and low soil permeability. The soil degradation mostly caused by low soil permeability which the number is under critical threshold < 0.7 cm hour^-1 in the entire land units. Implementing providing organic matter to the soil, planting variations of cover crops, on land plots (low, medium, high cover crops), land management by crop rotation and intercropping, minimum tillage in accordance with the rules of environmental conservation, can be done to minimize the soil degradation.

The use of agricultural land on steep slopes that is not in accordance with the rules of soil and water conservation causes Jatipurno Sub-District is vulnerable to erosion. The aim of this research was to analyze erosion hazardous level (TBE) and predict the actual erosion (A) at Jatipurno Sub-District and planning of soil conservation when the actual erosion is more than the threshold at Jatipurno District. The USLE (Universal Soil Loss Equation) was used to predict actual erosion and erosion hazardous level then planning of soil conservation. The result showed that actual erosion level was varied from very light to heavy. The very light erosion, in range 0.2 ton/ha/yr to 7.8 ton/ha/yr the areas is about 1,879.19 ha (43.5%). The light erosion is 51.96 ton/ha/yr the areas is about 788.40 ha (18.3%). The moderate erosion is 92.83 ton/ha/yr the areas is about 694.95 ha (16.1%). The heavy erosion in range 209.84 ton/ha/yr to 377.21 ton/ha/yr the areas is about 952.80 ha (22.1%). Erosion hazardous level was varied from very light to very heavy. The very light erosion hazardous level covered areas of 1,034.77 ha (23.98%), the light erosion hazardous level covered areas 1,443 ha (33.44%), the heavy erosion hazardous level covered areas 1,204 ha (27.91%), the very heavy erosion hazardous level covered areas 632.88 ha (14.67%). Actual erosion dominated by very light level and TBE by the light level. The Land Capability Classification (KKL) is used as the basis for recommending soil and water conservation. Soil conservation planning is carried out by vegetative and mechanical conservation measures, such as planting variations of cover crops and terraces built in accordance with slope land and soil depths, land management according to local environmental and cultural preservation regulations and cooperation of all parties in environmental management can be done to prevent and minimize erosion.