不同的植被类型对矿区垦复地土壤理化性状及生物固氮量的影响

Effect of Different Vegetation Types on Physical and Chemical Properties of Soil and Biological Nitrogen Fixation in Reclamation of Mining Areas

为了筛选适合在我国北方矿区废弃地上垦复的造林树种,在阜新煤矿区废弃地上开展不同植被类型下土壤理化性质以及生物固氮量的比较试验。结果表明:在工矿区废弃地上进行复垦后,各种植被类型均可显著提高土壤中的总氮含量,降低土壤容重,提高土壤肥力水平,pH值的变化各植被处理与对照没有明显差异;生物量整体来说以混合种植不同类型的植被效果更好,说明混合造林的固氮效果更佳。

In order to find out the afforestation tree species suitable for reclaiming on the abandoned land in the northern mining area of China,a comparative experiment on soil physical,chemical properties&biological nitrogen fixation under different vegetation types in the abandoned land of Fuxin coal mine in Liaoning Province was carried out.Result shows that in the industrial&mining area,after the reclamation on the abandoned land,various vegetation types can significantly increase the total nitrogen content in the soil,reduce the soil bulk density,and increase the soil fertility level.The changes in pH values did not show significant differences between the vegetation treatment&the control;in terms of mixed planting different types of vegetation,the effect of mixed afforestation is optimal.