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黄土高原植被变化对土壤侵蚀的影响
The impact of vegetation changes on soil erosion in the Loess Plateau
- 西北大学学报（自然科学版） 2024年54卷第3期 页码：398-412
- 作者机构：
1.西北大学 城市与环境学院，陕西 西安 710127
2.陕西省黄河研究院，陕西 西安 710127
- 作者简介：
刘宇，男，从事水土过程耦合研究，liuyu021@stumail.nwo.edu.cn。
宋进喜，男，教授，博士生导师，从事水文学、水资源及水环境研究，jinxisong@nwo.edu.cn。
- 基金信息：国家自然科学基金(42041004)
DOI：10.16152/j.cnki.xdxbzr.2024-03-006
中图分类号： S157.1纸质出版日期：2024-06-25，
收稿日期：2023-12-14，
扫 描 看 全 文
刘宇, 宋进喜, 邢璐通, 等. 黄土高原植被变化对土壤侵蚀的影响[J]. 西北大学学报（自然科学版）, 2024,54(3):398-412.
LIU Yu, SONG Jinxi, XING Lutong, et al. The impact of vegetation changes on soil erosion in the Loess Plateau[J]. Journal of Northwest University (Natural Science Edition), 2024,54(3):398-412.
刘宇, 宋进喜, 邢璐通, 等. 黄土高原植被变化对土壤侵蚀的影响[J]. 西北大学学报（自然科学版）, 2024,54(3):398-412. DOI： 10.16152/j.cnki.xdxbzr.2024-03-006.
LIU Yu, SONG Jinxi, XING Lutong, et al. The impact of vegetation changes on soil erosion in the Loess Plateau[J]. Journal of Northwest University (Natural Science Edition), 2024,54(3):398-412. DOI： 10.16152/j.cnki.xdxbzr.2024-03-006.
摘要
土壤侵蚀主要发生在我国黄土高原地区，大规模植被恢复措施的开展进一步影响了黄土高原的土壤侵蚀情况，剖析植被变化对土壤侵
蚀的影响可为黄土高原生态环境治理提供理论指导。研究基于中国土壤流失方程(CSLE)以及多元数据资料，对黄土高原2000—2018年植被覆盖度、土壤侵蚀及其相互作用进行多方面分析。结果表明：①黄土高原自东南向西北植被覆盖度逐渐递减，19年间植被覆盖度呈稳定上升趋势；②2000—2018年黄土高原平均土壤侵蚀模数为2 526.27 t·(km
2
·a)
－1
，与降雨量呈正相关，丘陵、台地及起伏山地侵蚀程度较强；③黄土高原植被覆盖度为45%～75%的区域侵蚀程度较强，当植被覆盖度增加40%以上时，会直接引起侵蚀的加剧，而当植被覆盖度减少或增加不超过30%时，降雨量的变化是侵蚀加剧或减弱的主导因素。研究结论可为黄土高原土壤侵蚀综合防治和生态环境质量改善提供参考。
Abstract
Soil erosion mainly occurs in the Loess Plateau region of China
and the implementation of large-scale vegetation restoration measures further affects the soil erosion situation on the Loess Plateau. Analyzing the impact of vegetation changes on soil erosion can provide theoretical guidance for the ecological environment management of the Loess Plateau watershed. Based on the Chinese soil loss equation (CSLE) and multivariate data
this study conducts a comprehensive analysis of vegetation coverage
soil erosion
and their interactions on the Loess Plateau from 2000 to 2018. The results show that: ① The vegetation coverage of the Loess Plateau gradually decreases from southeast to northwest
and the vegetation coverage shows a stable upward trend over 19 years
with significant improvement in large-scale vegetation; ② The average soil erosion modulus on the Loess Plateau from 2000 to 2018 was 2 526.27 t·(km
2
·a)
-1
which was positively correlated with rainfall. The degree of erosion was strong in hills
plateaus
and undulating mountains; ③ The area with vegetation coverage ranging from 45% to 75% in the Loess Plateau has a strong degree of erosion. When the vegetation coverage increases by more than 40%
it directly causes the intensification of erosion. However
when the vegetation coverage decreases or increases by no more than 30%
the change in rainfall is the dominant factor for the intensification or weakening of erosion. This study can provide reference for the comprehensive prevention and control of soil erosion and the improvement of ecological environment quality
in the Loess Plateau watershed.
关键词
中国土壤流失方程土壤侵蚀植被覆盖度黄土高原
Keywords
CSLEsoil erosionvegetation coverageLoess Plateau
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