Evaluation Of Land Damage Status For Biomassa Production In Loakulu Subdistrict Kutaikartanegara Regency Of East Kalimantan Province Indonesia

The objective of the study was to identify the parameters of soil damage so that the level of damage that occurs was known as a decision-making material with an appropriate approach to the problem so that the productivity of the land does not decrease even increased as a cultivation area that has a function for biomass production. The first step is to determine the potential for indicative soil damage by overlaying with the GIS-based digital map i.e. soil type map slope rainfall land cover then with the spatial and regional plan map. The results obtained 4 classes of potential indicative soil damage namely low 1 medium 2 high 3 and very high 4. Observations were made at 3 and 4. Number of field observation points and soil samples respectively 4 and 2. Field verification found that an effective soil depth solum thickness at 3 was 26880590 cm 25-40 slopes were used for agriculture whereas 4 was 20 cm and 26880560 only secondary forest. The results of the evaluation found that 5 parameters exceeding the threshold namely solum thickness s surface of rocks b permeability p soil acidity a and electrical conductivity e. Based on the relative frequency score the soil damage status is slightly damaged at 3 by limiting factor a or D.I-a while at 4 moderately damaged by limiting factor s b p and e or D.II-s b p e. Improvement actions in D.I-a are soil treatment organic fertilizing compost and liming whereas in D.II-s b p e is difficult to repair due to natural factors.