Conservation Risk Zoning Based on Soil Erodibility Across Land Mapping Units in a Tropical Sub-watershed of Aceh
DOI:
https://doi.org/10.51179/jsp.v10i2.3615Abstract
Soil erosion is a major land degradation threat in tropical watersheds. This study analyzed the spatial variability of soil erodibility (K) across 17 land mapping units (LMUs), examined its relationship with slope, and developed a conservation risk zoning framework in the Krueng Meuh sub-watershed, Aceh, Indonesia. Soil samples were collected from each LMU and analyzed in the laboratory to determine soil physical properties used for K calculation. Spatial analysis was performed using GIS by integrating K values with slope classes derived from DEM. K values ranged from 0.12 to 0.88 (mean 0.33), indicating moderate overall susceptibility. Nine LMUs had moderate erodibility, five high, and three low. LMU 8 (K=0.88) and LMU 11 (K=0.82) showed very high susceptibility. LMU 12 and LMU 17 were classified as very high risk zones due to high K combined with gentle slopes. These findings emphasize the importance of integrating soil properties and topography for site-specific conservation planning in tropical watersheds.nd, objectives, methods, significant results, conclusions and implications of research results. Abstract contains a maximum of 200 words, single space, Garamond font 9 pt, 1,5 space. Below the abstract is indicated a keyword consisting of a maximum of six words, of which the first word is the most important. Abstract in English is a translation from Indonesian. The editor has the right to edit the abstract for reasons of clarity of the abstract content.
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