Version 1
: Received: 2 January 2024 / Approved: 3 January 2024 / Online: 3 January 2024 (05:30:45 CET)
How to cite:
Guo, J.; Zhang, Z.; Yin, H.; Hou, L.; Zhang, Y.; Xue, Q. Effect of Land Use Change on Soil Loss by Water Erosion in the Niyang River Basin of Tibet from 1990 to 2020. Preprints2024, 2024010140. https://doi.org/10.20944/preprints202401.0140.v1
Guo, J.; Zhang, Z.; Yin, H.; Hou, L.; Zhang, Y.; Xue, Q. Effect of Land Use Change on Soil Loss by Water Erosion in the Niyang River Basin of Tibet from 1990 to 2020. Preprints 2024, 2024010140. https://doi.org/10.20944/preprints202401.0140.v1
Guo, J.; Zhang, Z.; Yin, H.; Hou, L.; Zhang, Y.; Xue, Q. Effect of Land Use Change on Soil Loss by Water Erosion in the Niyang River Basin of Tibet from 1990 to 2020. Preprints2024, 2024010140. https://doi.org/10.20944/preprints202401.0140.v1
APA Style
Guo, J., Zhang, Z., Yin, H., Hou, L., Zhang, Y., & Xue, Q. (2024). Effect of Land Use Change on Soil Loss by Water Erosion in the Niyang River Basin of Tibet from 1990 to 2020. Preprints. https://doi.org/10.20944/preprints202401.0140.v1
Chicago/Turabian Style
Guo, J., Ying Zhang and Qiang Xue. 2024 "Effect of Land Use Change on Soil Loss by Water Erosion in the Niyang River Basin of Tibet from 1990 to 2020" Preprints. https://doi.org/10.20944/preprints202401.0140.v1
Abstract
The Southwest Alpine Canyon Area of China was one of the regions in the world that suffered from severe soil erosion. The focus of this research was to understand the response of land use change on soil loss by water erosion in alpine canyon on Southeast Tibet, we analyzed the characteristics of temporal and spatial dynamics of land use in the Niyang River Basin from 1990 to 2020 using GIS and statistical methods, assessed the spatial and temporal change characteristics of soil erosion in the Niyang River Basin using RUSLE model. For this purpose, the meteorological, soil, topographic, remote sensing data were collected. The results showed the area of cropland and construction land in the Niyang River Basin increased to 2.4 and 6.1 times the original from 1990 to 2020, respectively, the area of forest and water continued to decrease. Grassland, unused land and forest have always been the dominant land types in the Niyang River Basin. Tolerable soil erosion was distributed in the flat areas of the valley terraces in the main stream and its tributaries, slight soil erosion was mainly distributed in the flat areas at high altitudes, and moderate, severe, very severe and destructive soil erosion was sporadically distributed in the Niyang River Basin. The areas of tolerable and slight soil erosion exceeded 82% of the total area, The area of severe, very severe and destructive soil erosion was less than 6%, but the total soil loss amount of severe, very severe and destructive erosion was more than 27%. From 1990 to 2020, the soil erosion area decreased from 9219.34 km2 to 8,090.84 km2 in Niyang River Basin, more than 85% of the soil erosion class has not changed, and the change of total soil loss amount also shows a significant reduction trend as a whole. 99% of the total soil loss amount in the Niyang River basin is generated by grassland, forest and unused land. The conversion of various land use types to cropland will cause the enhancement in soil erosion grade. We recommend that the focus of soil erosion control in the Niyang River Basin is to protect grassland, forest and carry out scientific farming.
Keywords
soil loss; water erosion; land use change; RUSLE; Niyang River Basin
Subject
Environmental and Earth Sciences, Soil Science
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
