四川林业科技2025，Vol.46Issue(2)：109-116,8.DOI:10.12172/202411080001
陕北风沙区煤矸石山重构土壤机械组成变化及其指示意义
Effects of reconstruction of coal gangue hills on soil mechanical composition and its indicative significance in the sandy area of Northern Shaanxi Province
摘要
Abstract
In order to provide theoretical and practical basis for vegetation greening and ecological reconstruction in different positions of coal gangue hill,the influence of typical positions on soil mechanical composition after artificial soil covering treatment was explored.The changes of soil particle size parameters,fractal dimension and grain size frequency curve on the windward slope,top platform and leeward slope were studied in detail by laser particle size analyzer.The results showed that the mechanical composition of the reconstructed soil of coal gangue hill was mainly sand and silt,and the clay content was low.Compared with undisturbed soil,sand content decreased,clay and silt content increased,and the mechanical composition of the top platform soil changed obviously.Soil sorting at different positions was excellent,skewness was extremely positive,kurtosis was narrow cusp.The fractal dimension of soil particles was positively correlated with clay and silt content,and negatively correlated with sand content.The lowest fractal dimension was 2.6777 on the windward slope.The heterogeneity of soil particles on the windward and leeward slopes was less than that on the top platform.The cumulative percentage curve of reconstructed soil particles in different positions became steep at 0.1 mm,the particle size was in the range of 0.1-0.25 mm,and the slope of particle size frequency curve was the largest.Artificial soil covering treatment is beneficial to the refinement of soil particles in coal gangue hill and can improve the soil texture.The windward slope may have the worst restoration effect due to wind erosion,so it is suggested to strengthen the greening worl on the windward slope.关键词
煤矸石山/典型位置/土壤机械组成/分形维数/粒度参数Key words
coal gangue hill/typical position/soil mechanical composition/fractal dimension/grain size parameter引用本文复制引用
朱颖,吴普侠,李群,辛云玲,董强,张麦芳,刘红彩,尹华飞,赵国平..陕北风沙区煤矸石山重构土壤机械组成变化及其指示意义[J].四川林业科技,2025,46(2):109-116,8.基金项目
2022年陕西省科协青年人才托举计划项目"榆林沙区煤矸石山重构土壤重金属含量及迁移规律研究"(NYHB202230) （NYHB202230）
国家自然科学基金"陕北矿区采煤塌陷对风蚀的影响研究"(41661062) （41661062）
