[1]ZHOU Jing,WU Li.Temporal and Spatial Variation of Soil Erosion and Its Response to Environmental Disturbances in the Hilly Region of Central Hunan[J].Research of Soil and Water Conservation,2022,29(05):40-47.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
29
Number of periods:
2022 05
Page number:
40-47
Column:
Public date:
2022-08-20
- Title:
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Temporal and Spatial Variation of Soil Erosion and Its Response to Environmental Disturbances in the Hilly Region of Central Hunan
- Author(s):
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ZHOU Jing, WU Li
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(College of geography and land engineering, Yuxi Normal University, Yuxi, Yunnan 653100,China)
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- Keywords:
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soil erosion; environmental disturbance; entropy weight TOPSIS; obstacle degree model; natural recovery
- CLC:
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S157.1
- DOI:
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- Abstract:
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In order to reveal the soil erosion spatiotemporal changes and its response to environmental interference, we used CSLE, entropy weight TOPSIS, obstacle degree model and other analysis methods to quantify soil erosion and identify its influencing factors in central Hunan Province from 2000 to 2015, which is mainly covered by low mountains and hills. The results show that:(1)more than 50% of the region was eroded in minor degrees;(2)the soil erosion volumes decreased by 49.75% from 2000 to 2015;(3)the soil erosion intensity and risk varied differently in space, with high values in the west and south of this region;(4)soil erosion in the study area was mainly caused by human disturbance, which was 3.62 times greater contribution(73.76%)than that of natural disturbance. In the future, it is necessary to focus on natural recovery and avoid excessive artificial interference. In general, soil erosion in the middle and low mountain and hilly areas of Hunan Province is mainly slight erosion, there are significant temporal and spatial variation characteristics, and human disturbance is the key driving force of soil erorion change.