Assessment of soil degradation in Pitu District, Ngawi Regency

Abstract

This study aimed to determine the status of soil damage in Pitu District, Ngawi Regency. The study was conducted in a descriptive exploratory with survey methods. Determination of site sampling was done by purposive sampling, based on distribution or division and land use categories from the results of map overlays. Assessment of soil degradation potency was based on land units from the uniformity of the soil, rainfall, slope, and land use map. Land units resulting from overlay were scored based on the results of multiplication of weights and soil, slope, rainfall, and land use ratings. Total score indicates soil Degradation Potency (SDP). Assessment of soil degradation status was done through matching and scoring. Field observation results were matched with the standard criteria of soil degradation from Indonesian Government Regulation No. 150 of 2000. Each parameter was scored, then the total score was used to determine soil degradation status. Soil degradation potency in

Spatial distribution of soil morphology and physicochemical properties to assess land degradation under different NDVI and TRI in North Halmahera, Indonesia

“…150 of 2000 combined by previous researchers (Aji et al, 2020), including rainfall, slope, land conservation, land use, flooding, pH, electrical conductivity, soil depth, surface rock, and sand fraction. Several other researchers also used the same method (Widiatiningsih et al, 2018;Mujiyo et al, 2020) in determining the potential of soil degradation. The ten parameters of the soil degradation index were then scored according to previous researchers (Aji et al, 2020), where the scoring results would be classified as very good (≥46%), good (36-45%), moderate (28-35%), damaged (17-27%), and heavily damaged (<16%).…”

“…Conservation techniques on steep slopes, improvement of soil with water and nutrient retention, and provision of organic matter and microorganisms are efforts that can be made to reduce soil degradation and improve soil quality (Noviyanto et al, 2017). Many previous researchers in Indonesia have conducted soil degradation assessments (Widiatiningsih et al, 2018;Aji et al, 2020;Mujiyo et al, 2020), but few have combined the linkages between soil degradation and NDVI and TRI. Zhumanova et al (2018) used NDVI to determine degraded vegetation types, while Noviyanto et al (2020) used TRI to determine land degradation threats such as erosion and landslides.…”