摘要
通过测定和计算毛乌素沙地南缘补连塔采煤塌陷区和非塌陷区风沙土春季解冻前后土壤含水量,研究土体冻结对采煤塌陷区风沙土含水量的影响。试验结果表明:在土体冻结及有积雪时,2005、2004年塌陷区质量含水量比对照区分别降低了4.3%和3.5%;土体解冻后,2005、2004年塌陷区容积含水量比对照区分别降低5.2%和6.2%。说明土壤冻结与积雪有利于缓解采煤塌陷区水分亏缺。
The sandy soil moisture in Bulianta mining subsidence area and the non -collapsing area in the southeast edge of Maowusu Sandy Land have been determined and calculated in spring. The result shows that when the soil is frozen and covered by snow, the soil moisture in subsidence area collapsed in 2005 and 2004 are separately 4.3% and 3.5% lower than the non -collapsing area. But after thawing of soil, the soil moisture in subsidence area collapsed in 2005 and 2004 are separately 5.2% and 6.2% lower than the non - collapsing area, which indicates that freezing soil and accumulated snow are advantageous to restrain the water deficit in coal -mining subsidence area.
出处
《内蒙古林业科技》
2008年第1期32-34,共3页
Journal of Inner Mongolia Forestry Science and Technology
关键词
采煤塌陷
土体冻结
土壤水分
coal - mining subsidence
freezing soil
soil moisture
