淮北煤矿塌陷区粉煤灰复田营林生态环境体系的建立

建立了煤矿塌陷区粉煤灰复田营林生态环境体系.分析和探讨了该体系的防风效果、滞量、调谐气候作用及对粉煤灰中有害物质的吸收能力,测定表明,林分较空旷地风速降低17.4％-41.6％,滞尘量降低28.05％,地温降低3.2-7.5℃,气温降低2.5-9.3℃.利用煤矿塌陷区和电厂粉煤灰废弃资源具有显著的经济、社会和环境效益.

Establishment of an Environmental and Ecological System by Afforestation on the Coal Ash Reclaimed Surface Subsidence Areas in Huaibei Coal Mine and an Analysis for Its Benefits

An artificial ecosystem has been created by afforestation on the reclaimed surface subsidence areas covered with coal ash in Huaibei Coal Mine, Anhui Province. In this paper, analysed and discussed are the benefits that such an ecosystem has brought about, including the effects for shelter from wind, for retaining the blowed dust, for regulating the local climate, and for uptaking the harmful substances from the covered coal ash. It has been found by field survey and measurement that in the woodland with relatively sparse tree stands, the wind speed has been reduced by 17.4-41.6%; the blowed dust has been retained by 28.05%; the ground temperature lowered by 3.2-7.5 C; and the air tempereature lowered by 2.5-9.3 C. The additional benefits include improving the environmental quality, eliminating the pollution by coal ash from power stations, reclaiming the surface subsidence areas, and other social, economic, environmental and ecological benefits.