【摘要】 利用Landsat卫星图将怀仁市境内盐碱地分为11个样地,测定每个样地的土壤pH值和电导率,并调查样地周边植被。结果显示,怀仁市境内盐碱地主要以碱土为主,盐渍化并不严重。土壤平均pH值为10.15,平均电导率为1.56 mS/cm;土壤电导率和pH值呈负相关线型关系,关系式为y=-4.1707x+43.913 0.当地盐碱地现有植被对土壤碱化均具有一定的改良效果,混交林的改良效果好于纯林,沙枣林分和柽柳林分对土壤碱化的改良效果最好。更多还原

【Abstract】 The saline-alkali land in Huairen was divided into 11 sample plots by using Landsat satellite images.The pH value and conductivity of each sample plot were measured,and the vegetation around the sample plot was investigated.The results showed that the saline-alkali land in Huairen was mainly alkaline soil which was not serious.the average soil pH value was 10.15 and the average soil EC was 1.56 mS/cm.The relationship between soil EC and pH value showed a negative correlation linear which was y=-4.170 7 x+43.913 0.The existing vegetation had a certain improvement effect on soil alkalization and the effect of mixed forest was better than pure forest.The improvement effect on soil alkalization of Elaeagnus angustifolia Linn.forest and Tamarix chinensis Lour.forest were the best.更多还原