Yin Baoku, Su Pengfei, Zhang Jianguo, et al. Dynamic Changes of Soil and Water Loss in Rich and Coarse Sediment Areas of Middle Yellow River Basin From 1985 to 2020[J]. Bulletin of Soiland Water Conservation, 2021, 41(5): 123-126.
DOI:
Yin Baoku, Su Pengfei, Zhang Jianguo, et al. Dynamic Changes of Soil and Water Loss in Rich and Coarse Sediment Areas of Middle Yellow River Basin From 1985 to 2020[J]. Bulletin of Soiland Water Conservation, 2021, 41(5): 123-126. DOI: 10.13961/j.cnki.stbctb.2021.05.017.
Dynamic Changes of Soil and Water Loss in Rich and Coarse Sediment Areas of Middle Yellow River Basin From 1985 to 2020
[Objective] The spatial distribution of soil erosion in the rich and coarse sediment areas of the Yellow River basin was studied in order to provide data support and scientific suggestions for soil erosion control
ecological environmental protection
and high-quality development in the Yellow River basin.[Methods] Dynamic changes of soil and water loss in rich and coarse sediment areas of the middle reaches of the Yellow River basin were analyzed based on dynamic monitoring of soil erosion in 2020 and the results of the national remote sensing surveys of soil erosion in China in 1985 and 1999.[Results] ① The area of regional soil and water loss decreased by 43.22%
the area of high-intensity soil and water loss decreased by 90.80%
and the status of soil erosion has been improved significantly over time. The changes in 1985-1999 were relatively small
while the changes in 1999-2020 were relatively large. ② The intensity of soil and water loss decreased in both periods. The decrease in 1999-2020 was significantly greater than in 1985-1999
and high-intensity soil erosion decreased significantly. In 1985-1999
the area of severe erosion mainly decreased
while in 1999-2020
the areas classified as intensive
extremely intensive
and severe erosion decreased significantly.[Conclusion] The main driving forces for the improvement of the ecological environment in the study area were the strengthening of the supervision and management of regional soil and water conservation
coordinated promotion of preventive protection and comprehensive management of soil and water conservation
economic and social development
environmental protection
and ecological policy guidance. Although the increasingly serious conditions resulting in soil and water loss in the Loess Plateau have been controlled
the region is still considered to be under the most severe soil erosion threat in China. It is still necessary to continue to take appropriate measures for the protection of the ecological environment.
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