基于RUSLE模型的黄河流域山西段土壤侵蚀变化与驱动因子
DOI:
CSTR:
作者:
作者单位:

1.山西农业大学;2.大同市规划设计研究总院有限责任公司;3.中国林业科学研究院林业研究所

作者简介:

通讯作者:

中图分类号:

S157

基金项目:

山西省研究生实践创新项目(2023SJ125)


CHANGES OF SOIL EROSION BASED ON RUSLE MODEL AND DRIVING FACTORS IN SHANXI SECTION OF THE YELLOW RIVER BASIN
Author:
Affiliation:

1.Shanxi Agricultural University;2.Datong Plan&3.Design Institute;4.Institute of Forestry, Chinese Academy of Forestry Sciences

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    本研究基于降水数据、土壤类型数据、数字高程模型数据(DEM)、植被覆盖指数(NDVI),分析降雨侵蚀力(R)、土壤可蚀性(K)、地形因子(D)、植被覆盖因子(C)和水土保持措施因子(P),利用修正通用土壤流失方程(RUSLE)对2000—2020年黄河流域山西段土壤侵蚀的时空分布格局进行研究,识别高侵蚀强度区域的区位特征;并使用地理探测器模型揭示影响土壤侵蚀强度分布格局的主要成因以及因素间耦合关系的定量归因。结果表明:(1)2000—2020年期间,黄河流域山西段的土壤侵蚀呈减弱态势,由2000年的31.29t/(hm2·a)降至2020年的25.67t/(hm2·a),呈现出东南弱西北强的空间分异特征;(2)栽培植被是影响土壤侵蚀的主要植被类型,土地利用/覆盖类型为草地或未利用地、海拔639~932m、坡度5°~8°和植被覆盖度30%~45%是土壤侵蚀主要发生源地;(3)驱使黄河流域山西段土壤侵蚀格局形成的多个因素中,植被覆盖度始终起主导作用;两两因素之间交互协同作用表现为双因子增强或者非线性增强,植被覆盖度和坡度交互作用最大。因此,黄河流域山西段在进行土壤侵蚀防治和生态保护与修复时,应优先考虑植被覆盖度为30%~45%且坡度在5°~8°的区域。

    Abstract:

    Based on precipitation data, soil type data, digital elevation model data (DEM), and vegetation coverage index (NDVI), this study analyzes rainfall erosivity (R), soil erodibility (K), terrain factors (D), and vegetation coverage factors (C) and soil and water conservation measure factors (P), use the Revised Universal Soil Loss Equation (RUSLE) to study the temporal and spatial distribution pattern of soil erosion in the Shanxi section of the Yellow River Basin from 2000 to 2020, and identify the location characteristics of high erosion intensity areas; and A quantitative attribution study using the geographical detector model to reveal the main causes that affect soil erosion intensity distribution patterns and coupling relationships between factors. The results show that: (1) During 2000—2020, soil erosion in Shanxi section of the Yellow River Basin showed a weakening trend, which declined from 31.29 t/(hm2·a) in 2000 to 25.67 t/(hm2·a) in 2020 and showed spatial differentiation characteristics of weak in the southeast and strong in the northwest; (2) Cultural vegetation is the main vegetation type that affects soil erosion. The land use/cover type of grassland or unused land, the altitude of 639~932 m, the slope of 5°~8°, and the vegetation coverage of 30%~45% are the main source of soil erosion; (3) Among the multiple factors that drive the formation of soil erosion patterns in the Shanxi section of the Yellow River Basin, vegetation coverage always plays a leading role; the interaction and synergy between the two factors manifests as double—factor enhancement or nonlinear enhancement, with vegetation coverage and slope having the largest interaction. Therefore, when carrying out soil erosion prevention and ecological protection and restoration in the Shanxi section of the Yellow River Basin, priority should be given to areas with vegetation coverage of 30%~45% and slopes of 5°~8°.

    参考文献
    相似文献
    引证文献
引用本文
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2024-03-14
  • 最后修改日期:2024-08-08
  • 录用日期:2024-08-19
  • 在线发布日期:
  • 出版日期:
文章二维码