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《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

卷:

第47卷

期数:

2025年第06期

页码:

1086-1098

栏目:

环境与可持续发展

出版日期:

2025-12-10

文章信息/Info

Title:

Spatiotemporal Evolution Patterns of Soil Erosion in Qinling-Daba Mountains, China and Their Multi-factor Interactive Driving Mechanisms

文章编号:

1672-6561(2025)06-1086-13

作者:

李心悦¹; 2; 霍艾迪²; 3*; 刘 琪²; 3; 刘 凤²; 3; 李沛哲¹; 2

(1. 长安大学 土地工程学院,陕西 西安 710054; 2. 长安大学 旱区地下水文与生态效应教育部重点实验室,陕西 西安 710054; 3. 长安大学 水利与环境学院,陕西 西安 710054)

Author(s):

LI Xin-yue¹; 2;  HUO Ai-di²; 3*;  LIU Qi²; 3;  LIU Feng²; 3;  LI Pei-zhe¹; 2

(1. School of Land Engineering, Chang'an University, Xi'an 710054, Shaanxi, China; 2. Key Laboratory of Subsurface Hydrology and Ecological Effect in Arid Region of Ministry of Education, Chang'an University, Xi'an 710054, Shaanxi, China; 3. School of Water and Environment, Chang'an University, Xi'an 710054, Shaanxi, China)

关键词:

土壤侵蚀;  修正通用土壤流失方程模型;  地理探测器;  空间异质性;  驱动机制;  秦巴山区

Keywords:

soil erosion;  RUSLE model;  geodetector;  spatial heterogeneity;  driving mechanism;  Qinling-Daba Mountains

分类号:

S157.1

DOI:

10.19814/j.jese.2025.03017

文献标志码:

A

摘要:

秦巴山区作为我国关键生态屏障,阐明其土壤侵蚀时空演变规律对生态高地建设至关重要,尤其是在解析土壤侵蚀的驱动机制、自然与人为因子的交互作用及其时空异质性方面有待深入讨论。结合土壤侵蚀强度转移矩阵和地理探测器,基于修正通用土壤流失方程(RUSLE)模型,揭示2002～2022年秦巴山区土壤侵蚀时空格局及多因子驱动机制。结果表明:①秦巴山区年均侵蚀模数呈“先升后降”趋势,土壤侵蚀以微度、轻度侵蚀为主,面积占比超过81%,各等级侵蚀均呈现转移特征,微度与轻度侵蚀转移面积占比最高,为关键转入类型,轻度侵蚀转出面积最大,为23 163.63 km²(占全区总面积的7.72%)。②驱动因子分析显示自然因子主导侵蚀格局(坡度q值为0.69,降雨侵蚀力q值为0.68),早期人类活动通过土地利用转型加剧侵蚀,后期植被恢复抑制侵蚀; 关键因子交互效应中,坡度与降雨侵蚀力的交互驱动力最大(q值为0.87); 坡度与土地利用类型交互驱动力q值为0.80,坡度与其他因子的交互表现出极强的增强效应。③2002～2022年秦巴山区土壤侵蚀热点集中于林地、草地、水域及15°～25°坡度带。

Abstract:

As a critical ecological barrier in China, Qinling-Daba Mountains play an essential role in regional ecological security. Understanding the spatiotemporal evolution of soil erosion in this region is crucial for ecological conservation, particularly regarding the driving mechanisms, interactions between natural and anthropogenic factors, and their spatiotemporal heterogeneity. Revised universal soil loss equation(RUSLE)model, in combination with erosion intensity transition matrices and a geodetector analysis, was applied to reveal the spatiotemporal patterns and multi-factor driving mechanisms of soil erosion in Qinling-Daba Mountains from 2002 to 2022. The results show that ① the annual average erosion modulus shows an initial increase followed by a decrease; soil erosion is primarily slight or mild, accounting for more than 81% of the total area; all erosion intensity levels exhibit transition characteristics, with slight and mild erosion showing the highest proportion of area undergoing transitions; these two categories are also the main transition-in types, while mild erosion has the largest transition-out area, amounting to 23 163.63 km²(7.72% of the total area). ② Natural factors including slope(q=0.69)and rainfall erosivity(q=0.68)dominate the erosion pattern; early human activities exacerbate erosion through land-use changes, while later vegetation restoration contributes to its mitigation; among the factor interactions, the combination of slope and rainfall erosivity is the strongest(q=0.87), followed by slope and land use(q=0.80); slope also exhibits pronounced nonlinear enhancement effects when interacting with other factors. ③ From 2002 to 2022, soil erosion hotspots are mainly concentrated in forest land, grassland, water bodies, and slope zones between 15° and 25°.

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相似文献/References:

[1]吴万贞,刘峰贵,陈 琼,等.三江源地区土壤侵蚀类型研究[J].地球科学与环境学报,2009,31(04):423.
　WU Wan-zhen,LIU Feng-gui,CHEN Qiong,et al.Study on Soil Erosion Types in Three-river Headstream Region[J].Journal of Earth Sciences and Environment,2009,31(06):423.
[2]卢玉东,张树恒,宋光煜,等.低山丘陵区土壤侵蚀生态工程治理模式及优化配置 ———以四川省宣汉县拱桥河流域为例[J].地球科学与环境学报,2007,29(03):304.
　LU Yu-dong,ZHANG Shu-heng,SONG Guang-y u,et al.Scheme of Soil Erosion Control and Ecologic Measure Optimization in Hill and Mound Region - A Case Study of Gongqiao Waterside in Xuanhan County,Sichuan Province[J].Journal of Earth Sciences and Environment,2007,29(06):304.

备注/Memo

备注/Memo:

收稿日期:2025-03-13; 修回日期:2025-07-07投稿网址:http:∥jese.chd.edu.cn/
基金项目:国家自然科学基金项目(42261144749,42377158); 陕西省国际科技合作计划项目(2024GH-ZDXM-24); 陕西省农业科技114公益平台服务乡村振兴实用技术培训项目(2024NC-XCZX-06); 国家外国专家项目(H20240400)
*通信作者:霍艾迪(1971-),男,陕西西安人,教授,博士研究生导师,工学博士,E-mail:huoaidi@chd.edu.cn。

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