煤矸石山生境空气相对湿度变化研究——以阜新矿区孙家湾矸石山为例

STUDY ON VARIATION OF AIR RELATIVE HUMIDITY IN THE HABITAT OF COAL GANGUE PILE ——Taking Sunjiawan Gangue Pile of Fuxin Mining Area as an Example

实地观测结果表明:煤矸石山生境在昼间的空气相对湿度呈“V”字型变化趋势。在生长季内,月平均空气相对湿度由高至低的次序为8月>7月>9月>6月>5月。对于同一坡向,排矸年限较长、植被状况较好样地的月平均相对湿度高于排矸年限较短、植被状况较差的样地;对于排矸年限相同、坡向不同的样地,阴坡的月平均相对湿度高于阳坡。整个生长季中,阴坡排矸25 a^45 a样地的月均相对湿度比排矸8 a以下样地高4.4%;阳坡排矸25 a^45 a样地比排矸8 a以下样地高5.5%,植被的存在对于改善干热的矸石山小气候起至关重要的作用。

The results of observation on the spot showed that the variation of air relative humidity in the gangue pile habitat at daytime took on a ＂V＂ shape trend. The order of monthly mean of air relative humidity was August 〉 July 〉 September 〉 June 〉 May in the growth quarter. The monthly mean of air relative humidity in the plot of same slope with longer dumping years and higher vegetation coverage was hyper to it in the plot with shorter dumping years and lower vegetation coverage. The monthly mean of air relative humidity in shady slope was hyper to it in sunny slope with same dumping years. In the growth quarter, the monthly mean of air relative humidity in dumping 25 -45a spot of shady slope was hyper 4.4% to dumping below 8a, and in sunny slope this value was 5.5%. So the existence of vegetation takes an extremely important role to perfect xerothermic mieroclimate of the coal gangue pile.