Temporal and Spatial Dynamic Changes of Soil Erosion in Mountain Area of Southwest Sichuan Province During 2000-2018

Yao Kun; Zhou Bing; He Lei; Li Yuxia

doi:10.13961/j.cnki.stbctb.2021.04.031

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Temporal and Spatial Dynamic Changes of Soil Erosion in Mountain Area of Southwest Sichuan Province During 2000-2018

- Temporal and Spatial Dynamic Changes of Soil Erosion in Mountain Area of Southwest Sichuan Province During 2000-2018
- Bulletin of Soiland Water Conservation Vol. 41, Issue 4, Pages: 224-230(2021)
- 作者机构：
  
  1. 西昌学院资源与环境学院, 四川西昌,615000
  2. 国家气候中心气候服务室, 北京海淀区,100081
  3. 成都信息工程大学软件工程学院,四川,成都,610103
  4. 电子科技大学自动化工程学院,四川,成都,610054
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2021.04.031
  CLC： S157.1
- Published：2021
- 稿件说明：
移动端阅览
Yao Kun, Zhou Bing, He Lei, et al. Temporal and Spatial Dynamic Changes of Soil Erosion in Mountain Area of Southwest Sichuan Province During 2000-2018[J]. Bulletin of Soiland Water Conservation, 2021, 41(4): 224-230.
DOI：

Yao Kun, Zhou Bing, He Lei, et al. Temporal and Spatial Dynamic Changes of Soil Erosion in Mountain Area of Southwest Sichuan Province During 2000-2018[J]. Bulletin of Soiland Water Conservation, 2021, 41(4): 224-230. DOI： 10.13961/j.cnki.stbctb.2021.04.031.

摘要

[目的] 了解川西南山地区土壤侵蚀时空动态变化特征，为实现区域生态环境的综合治理提供科学参考。[方法] 基于通用土壤流失方程，完成该地区2000—2018年各年份土壤侵蚀量计算，并参照国家水力侵蚀强度分级标准将其分为微度、轻度和中度等共6个等级，借助空间叠置功能和线性回归方程对其时空变化规律进行分析。[结果] ①研究区整体呈现由北向南强烈及以上等级侵蚀区面积逐渐扩大的变化；②全域约有50%以上的地区存在明显的土壤侵蚀现象；③2010年区域土壤侵蚀强度存在较明显的突变现象，全域约60%的地区强度等级未发生明显变化，各等级整体呈现较高稳定性；④整个时段内，全域有超过95%的地区土壤侵蚀程度呈现明显好转和未发生改变的状态。[结论] 川西南山地区土壤侵蚀总体得到有效遏制，土壤侵蚀动态规律显著，降雨侵蚀对其变化驱动作用明显。

Abstract

[Objective] The dynamic changes of soil erosion in the mountain area of Southwestern Sichua Province were analyzed to support the comprehensive management of the regional ecological environment. [Methods] Based on the general soil loss equation

the study calculated the amount of soil erosion in the region from 2000 to 2018

and divided it into six levels including mild

light and moderate according to the national water erosion intensity grading standard. The spatial overlay analysis and linear regression equation methods were used to analyze its temporal and spatial changes. [Results] ① As a whole

soil erosion in the study area increased gradually from north to south. ② More than 50% of the region had obvious erosion. ③ In 2010

there was a obvious abrupt change in the intensity of regional soil erosion

but no significant change occurred in about 60% of the regional soil erosion intensity level over the whole period of time

and the overall stability of the soil erosion intensity levels was relatively high. ④ During the entire period

more than 95% of the areas in the region showed obvious improvement and no change in the degree of erosion state. [Conclusion] Soil erosion has been effectively controlled. The dynamic law of soil erosion in the study area is obvious

and rainfall erosion has an obvious driving effect on its change.

关键词

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