喀斯特区土壤侵蚀与石漠化协同演变及交互关系

何茂林; 张玉珊; 高家勇; 吴清林; 李瑞

doi:10.13870/j.cnki.stbcxb.2023.01.020

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喀斯特区土壤侵蚀与石漠化协同演变及交互关系

更新时间：2025-03-12

- 喀斯特区土壤侵蚀与石漠化协同演变及交互关系
- Synergistic Evolution and Interaction of Soil Erosion and Rocky Desertification in Karst Area
- 水土保持学报 2023年37卷第1期页码：140-150
- 作者机构：
  
  1. 贵州师范大学喀斯特研究院,贵阳,550001
  2. 国家喀斯特石漠化防治工程技术研究中心,贵阳,550001
- 作者简介：
  
  [ "何茂林(2000-),男,硕士研究生,主要从事土壤侵蚀与水土保持研究。E-mail:3054358836@qq.com" ]
- 基金信息：
  
  国家自然科学基金项目(32060372);贵州省科技计划项目(黔科合支撑[2021]一般462号);贵州省基础研究计划项目(黔科合基础-ZK[2022]一般317)
- DOI：10.13870/j.cnki.stbcxb.2023.01.020
  中图分类号： S157.1
- 纸质出版：2023
- 稿件说明：
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何茂林, 张玉珊, 高家勇, 等. 喀斯特区土壤侵蚀与石漠化协同演变及交互关系[J]. 水土保持学报, 2023,37(1):140-150.

HE Maolin, ZHANG Yushan, GAO Jiayong, et al. Synergistic Evolution and Interaction of Soil Erosion and Rocky Desertification in Karst Area[J]. 2023, 37(1): 140-150.
何茂林, 张玉珊, 高家勇, 等. 喀斯特区土壤侵蚀与石漠化协同演变及交互关系[J]. 水土保持学报, 2023,37(1):140-150. DOI： 10.13870/j.cnki.stbcxb.2023.01.020.

HE Maolin, ZHANG Yushan, GAO Jiayong, et al. Synergistic Evolution and Interaction of Soil Erosion and Rocky Desertification in Karst Area[J]. 2023, 37(1): 140-150. DOI： 10.13870/j.cnki.stbcxb.2023.01.020.

摘要

为探究喀斯特地区土壤侵蚀、石漠化协同演变规律、驱动因子及主要驱动因子下二者交互关系。采用优化后的RUSLE模型估算贵州省喀斯特地区2005—2015年土壤侵蚀

并利用贵州省全国石漠化普查数据库计算同期石漠化状况

运用地理探测器探究驱动因子以及主要驱动因子下二者交互关系。结果表明:2005—2015年贵州省喀斯特地区土壤侵蚀与石漠化均以中度及以下为主

其中土壤侵蚀中度及以下占比58%以上

而中度及以下石漠化占比达80%以上;时间上二者存在发生时间的异同性

但研究期间

二者均不同程度地趋于好转;中度及以下石漠化中土壤侵蚀发生率较大

中度以上中占比极少

其中无石漠化中土壤侵蚀发生率达70%以上;土壤侵蚀驱动因子解释力大小依次为土地利用>坡度>年降雨量>海拔>岩石裸露率>植被盖度>岩性>土层厚度

石漠化驱动因子解释力大小依次为岩石裸露率>土层厚度>年降雨量>海拔>岩性>土地利用>植被盖度>坡度。因子组合(交互)对土壤流失及石漠化的解释力均较单因子有所增强

其中土壤侵蚀的主导因子为土地利用

石漠化的主导因子为岩石裸露率;主要驱动因子下二者交互关系结果表明

土壤侵蚀与石漠化存在因果关系且土壤侵蚀先于石漠化发生发展

但简单线性关系并不能解释二者关系

而是分阶段呈正相关或负相关的复杂关系。研究结果可为喀斯特地区土壤侵蚀与石漠化防治提供理论参考。

Abstract

The purpose of this study was to explore the co-evolution of soil erosion and rocky desertification and their interaction under driving factors and main driving factors in the karst region. In this study

Optimized RUSLE model was used to estimate soil erosion from 2005—2015 in the karst area of Guizhou Province

and the national rocky desertification census database was used to calculate the rocky desertification in the same period

and the Geographic detector was used to explore the interaction between the drivers and the main drivers. The results showed that soil erosion and rocky desertification from 2005 to 2015

karst area in Guizhou Province were mainly moderate and below

soil erosion accounted for more than 58%

and moderate and below rocky desertification accounted for more than 80%; In terms of time

there were similarities and differences in the occurrence time of these two

but during the research period

both of them tended to improve in varying degrees. The incidence of soil erosion in moderate and below rocky desertification was large

and the proportion of above moderate rocky desertification was very small

among which the incidence of soil erosion in no rocky desertification was more than 70%. The explanatory force of the soil erosion driver was the land use > slope > yearly precipitation > elevation > rock exposure rate > vegetation cover > lithology > soil thickness; The explanatory force of the rocky desertification driver was the rock exposure rate > soil thickness > yearly precipitation > elevation > lithology > land use > vegetation cover > slope. The explanatory force of factor combination (interaction) on soil loss and rocky desertification was enhanced compared with the single factor

in which the dominant factor of soil erosion was land use

and the dominant factor of rocky desertification was rock exposure rate; The results showed that the causal relationship between soil erosion and rocky desertification exists and soil erosion develops before rocky desertification

but the simple linear relationship cannot explain the two relationships

but a complex relationship with positive or negative correlation exist in stages. The results can provide theoretical reference for soil erosion and rocky desertification control in karst area.

关键词

Keywords

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