摘要
采用TDR便携式土壤水分测定仪对不同覆盖方式的煤矸石样地进行长期监测,研究不同覆盖方式对自燃煤矸石山坡面土壤水分动态的影响。结果表明:在同一时期内,随着矸石覆盖率的增加,煤矸石样地的土壤含水率也随之增加,且矸石与黄土混合覆盖的煤矸石样地的土壤水分状况明显好于纯黄土覆盖的煤矸石山。矸石覆盖间隔0.15～0.25 m,覆盖率35%～45%的煤矸石覆盖模式,既能为植物的生长提供充足的水分,又能保证良好的出苗率,植被恢复状况最优。上述研究结果可以为自燃煤矸石山的生态构建提供重要理论依据。
The sample plots of spontaneous combustion gangue dump with different covering means were observed for a long time by using TDR portable soil moisture tester,and the influences of different covering means on dynamics of soil moisture in slope of spontaneous combustion gangue dump were studied.The results showed that within the same period,soil moisture content in coal gangue sample plot increased with increasing gangue coverage rate,and the soil moisture status in sample plot covered by gangue and loess was significantly better than that covered by pure loess.The gangue coverage model,in which gangue cover interval was 0.15～0.25 m and coverage rate was 35%~45%,not only can supply enough water to the growth of plants,but also can guarantee a good seedling emergence rate,so it had the best vegetation restoration status.The research results could provide important theoretical basis for ecological construction of spontaneous combustion gangue dump.
出处
《湖南农业科学》
2011年第7期59-61,65,共4页
Hunan Agricultural Sciences
基金
北京市科学技术研究院科技创新工程(2011A-4-Z)
国家林业公益性行业科研专项项目(200904030)
关键词
自燃煤矸石山
土壤水分
植被恢复
spontaneous combustion gangue dump
soil moisture
vegetation restoration
