Vegetation Roots Effects on Soil properties of Reclamation Mine Dump in China Loess Area
Vegetation roots play an important role in improving soil properties, but few studies are found in reclamation coal-mine dumps. In this study, using combining the observation of soil profile at field and physical analysis in laboratory, vegetation root distribution impact on soil physical properties was conducted in Pingshuo mine dump having reclaimed for 10 years, loess area of China, to effectively control slope soil erosion. Vertical distribution of effective root density (ERD) of vegetation was different from that of original landform. Root weight density (RWD) of herb (Elymusdahuricus Turcz, ET) was the largest in topsoil soil, which was 1.74 and 3.49 times as many as that of tree ( Robinia pesudoacacia, RP ) and shrub ( Caragana korshinskii, CK ) respectively. Compared to the non reclamation slope, there were no serious soil compactions due to improved physical properties, but irregular waving in soil profile was found. We can used separately linear regression model to describe the relationship between soil and root (P<O.O1). Reasonable vegetation configuration is beneficial to improving soil properties and controlling soil erosion of dump.
opencast coal mine reclamation vegetation root distribution physical properties loess area of China
Chunjuan Lv Zhongke Bai Weiguo Chen
College of Resources & Environmental Science, Shanxi Agriculture University,Taigu Shanxi,030801,Chin School of Land Science & Technology, China University of Geosciences; Key Laboratory of Land Reclama College of Life Science, Shanxi Agriculture University,Taigu Shanxi,030801,China
国际会议
西安
英文
385-389
2010-10-11（万方平台首次上网日期，不代表论文的发表时间）