土壤2017，Vol.49Issue(4)：770-775,6.DOI:10.13758/j.cnki.tr.2017.04.019
榆神府覆沙矿区采煤塌陷地表层土壤理化性质演变
Evolution of Topsoil Physical-chemical Properties After Coal Mining Subsidence in Yu-Shen-Fu Sand Covered Mining Area
摘要
Abstract
The soil samples in different years of coal mining subsidence (1, 2, 5, 10 a, and un-subsidence area) at Yu-Shen-Fu Mining areas were collected, and the soil physical-chemical properties were measured. The results showed that soil quality showed a degradative trend in subsidence area compared with un-subsidence area. Soil bulk density, hardness, contents of clays, moisture, organic matter, available nitrogen, available phosphorus, available potassium, total phosphorus and total potassium were significantly decreased, while soil total porosity, pH, and sand content increased in the early stages of subsidence (1–2 a). However, the change of soil total nitrogen was not obvious in the research period. The above soil indexes showed an improving trend after 5 years natural restoration, soil physical properties, moisture and total nutrients recovered rapidly and reached up to the level before subsidence in 10 years; while available soil nutrients, pH and organic matter has not yet reached level of un-subsidence area. The succession of soil quality under natural restoration can be divided into three stages, namely the degradation stage (1–2 a)→improvement stage ( about 5 a )→partial recovery stage (after 10 a). Those results implied that coal mining subsidence had a certain sustaining damage on soil properties at Yu-Shen-Fu Mining area.关键词
榆神府矿区/采煤塌陷/土壤理化性质/演变规律/生态恢复Key words
Yu-Shen-Fu mining area/Coal mining subsidence/Soil physical-chemical properties/Successional rule/Ecological restoration分类
农业科技引用本文复制引用
杜华栋,赵晓光,张勇,聂文杰..榆神府覆沙矿区采煤塌陷地表层土壤理化性质演变[J].土壤,2017,49(4):770-775,6.基金项目
国家自然科学基金项目(41401306)、西安科技大学博士启动金项目(2014QDJ019)和陕西省水利厅水利科技项目(2015slkj-01)资助. （41401306）
