中国农学通报2025，Vol.41Issue(29)：38-45,8.
矿山开采迹地土壤团聚体稳定性及分形特征研究
Study on Stability and Fractal Characteristics of Soil Aggregates in Mine Spoil Areas
摘要
Abstract
The condition of soil aggregates within mining-disturbed areas critically determines the selection and design of ecological restoration strategies for mined ecosystems.This study focused on open-pit mining-disturbed sites in eastern Yunnan.Specifically,representative soil samples were systematically collected from five typical mining-disturbed sites and one undisturbed control site at Dushi Mountain Mine,to characterize the stability of soil aggregates and their fractal dimension properties in mining-impacted environments.The results showed that mining operations significantly altered the distribution of mechanical soil aggregates and water-stable aggregates,further influencing key soil aggregate parameters including mean weight diameter(MWD),geometric mean diameter(GMD),and the proportion of aggregates exceeding 0.25 mm in diameter(R＞0.25).These changes led to reduced soil structural stability,evidenced by the percentage of aggregate destruction(PAD)in both surface and subsurface layers of the mining-disturbed sites,which were 1.88-28.66 percentage points higher than control(CK)plots.Conversely,the water-stable aggregate stability rate(WASR)in mining areas was consistently lower than that of CK.Notably,under both dry and wet sieve methodologies,the fractal dimension of soil aggregates decreased significantly with increasing content of aggregates>0.25 mm.Therefore,the fractal dimension could be reduced and soil structural stability enhanced by increasing the content of soil aggregates larger than 0.25 mm.This study elucidated the stability and fractal characteristics of soil aggregates in mining-disturbed sites,providing a scientific basis for the selection and configuration of ecological restoration measures in post-mining ecosystems.关键词
开采迹地/土壤团聚体/稳定性/分形维数Key words
spoil areas/soil aggregates/stability/fractal dimension分类
农业科技引用本文复制引用
郭镒维,张永颖,高子航,范春梅..矿山开采迹地土壤团聚体稳定性及分形特征研究[J].中国农学通报,2025,41(29):38-45,8.基金项目
云南省教育厅科学研究基金项目"滇东地区露天矿山开采迹地生态修复技术研究"(2023J0448) （2023J0448）
云南省大学生创新创业训练计划项目"喀斯特岩溶区露天矿山开采迹地生态修复实验研究"(2023). （2023）
