摘要
河岸带具有缓冲功能、廊道功能、水质净化功能等生态功能,河岸带土壤结构是河岸带生态功能的物质基础。通过对草地、耕地、林地等不同性质河岸带进行土壤采样和分析,发现,草地类型河岸带土壤呈现总孔隙度随着距水距离的增加呈现先增加后减少的规律,距水5 m处为拐点;林地河岸带田间持水率则呈现随距水距离的增加先降低后升高的规律。河岸带林地土壤容重较低,最低仅为0.69。林地河岸带土壤田间持水率高、总孔隙度、非毛管孔隙度高,土壤容重、比重低;而草地、耕地性质比较接近。
Ecologically,riparian zone has functions of buffering,corridor and cleaning water quality.Soil structure of riparian zone is the material base for these ecological functions.Through sampling analysis of soil in different riparian zones of grassland,cultivated land and forestry land,we found that bulk porosity of the soil on grass land tended to increase at first and decrease later and the distance from water increased with the distance of 5 meters as the turning point.Field water holding rate of riparian zone of forestry land tended to decrease at first and increase later with the increase of the distance from water.Soil bulk density of forestry land of riparian zone is very low and the lowest is only 0.69.The field water holding rate,bulk porosity and non-capillary porosity of riparian zone of forestry land are all high,but the soil bulk density and specific gravity are low.Such properties of grassland and cultivated land are quite similar.
出处
《辽东学院学报（自然科学版）》
CAS
2011年第1期45-49,共5页
Journal of Eastern Liaoning University:Natural Science Edition
基金
辽宁省教育厅科研计划项目(2009A272)
关键词
河岸带
土壤
蓄能电站
土壤容重
riparian zone
soil
storage power station
soil bulk density
