水土保持研究2025，Vol.32Issue(6)：21-28,8.DOI:10.13869/j.cnki.rswc.2025.06.017
黄土高原近10年冲沟发育特征及其对土地利用变化的响应
Gully development characteristics and their response to land use changes in Loess Plateau in the past ten years
摘要
Abstract
[Objective]To investigate the effects of vegetation coverage,slope gradient,and land use changes over the past decade on gully development in the hilly-gully region of the Loess Plateau,thereby providing a reference for gully erosion prevention and control.[Methods]Using transect survey method,this study selected 66 gullies at 12 sampling sites across 7 counties from south to north in the Loess Plateau's hilly-gully region.Google Earth historical images and drone-derived images were utilized to analyze gully development characteristics and interpret land use changes from 2013 to 2023.[Results](1)Forest and grassland were the dominant land use types at all sampling sites,with grassland increasing and forest gradually decreasing from south to north.From 2013 to 2023,varying degrees of reduction in woodland,shrubland,and grassland areas were observed,while cultivated land area increased.(2)Among the 66 gullies,11 exhibited significant expansion of area,with the number of new gully heads per gully ranging from 1 to 5,and the headward erosion distances spanning from 6.50 to 40.64 meters.Bare soil areas within 26 gullies increased,with an average increase of 1 341.55 m2.(3)Gullies with catchments dominated by cultivated land or forest-to-cultivated land conversion demonstrated significantly higher activity than those with forest or cultivated land-to-forest conversion.Gullies with catchments dominated by forest were more prone to collapses and landslides,leading to increased bare soil areas.Developed gullies were primarily distributed in Yijun,Fuxian,Mizhi,and Jungar Banner.[Conclusion]Over the past decade,most gullies in the hilly-gully region of the Loess Plateau have remained relatively stable,with approximately 17％experiencing headward erosion and 40％having internal erosion.Vegetation coverage,slope gradient,and land use types and their changes in catchments significantly affect gully activity.关键词
冲沟/溯源侵蚀/沟谷内部侵蚀/退林还耕/黄土高原Key words
gully/headward erosion/gully internal erosion/forest-to-cultivated land conversion/Loess Plateau分类
农业科技引用本文复制引用
欧俊杉,张岩,孙程程,郭海燕,邢慧淼,路炳军..黄土高原近10年冲沟发育特征及其对土地利用变化的响应[J].水土保持研究,2025,32(6):21-28,8.基金项目
国家自然科学基金重点项目"黄土高原植被恢复切沟侵蚀的动力机制与模拟"(42130701) （42130701）
