摘要
对大杨树煤矿区种植乔木模式与自然恢复模式恢复下,矸石堆不同坡位土壤理化性质进行了比较研究。结果表明:(1)种植乔木模式与自然恢复模式对煤矸石堆土壤物理性质进行改善,后者自矸石堆底部向坡顶发展,有壤土发展为砂壤的变化趋势,而前者不同坡位土壤结构更优。(2)种植乔木模式较自然恢复模式碱解氮、有机质含量高,p H值更接近对照区,但速效磷含量较低,在电导率方面,自然恢复模式的坡底、种植乔木模式的坡顶和坡中与对照区相近。
The influences of different vegetation recovery mode on soil of coal gangue heap in Dayangshu coal mine were studied, soil＇s physicochemical properties of forest model and natural restoration model in of different slope positions of coal gangue heaps were studied. The results showed：（1） From top to bottem,natural restoration model had the trend that changed from loam to sandy loam, but forest model was closer loam.（2）Nitrogen, organic matter of forest model were higher, its p H value was closer to original, but available phosphorus was lower than natural restoration model, the conductivity of natural restoration model＇bottem and forest model＇s top and middle were closer to original.
出处
《林业科技》
2016年第1期56-59,共4页
Forestry Science & Technology
基金
内蒙古自治区国土资源厅重点研究项目"内蒙古大兴安岭林区矿产资源开发与生态环境保护研究"(内财建[2012]1965号)资助
关键词
植被恢复
煤矸石堆
土壤理化性质
大杨树煤矿
Vegetation recovery
Coal gangue heap
Soil＇s physicochemical properties
Dayangshu coal mine
