A Study on the Soil Hydrological Effect on Different Land Use Types of Terraced Core Area in Yuanyang
In order to reveal the mechanism of the water conservation in forest soil of the terraced fields in Yuanyang,double ring method and ring technique of using knife was used to study the holding water performance and the pore situation about the woodland,shrub,waste grassland and slope farmland on terrace core area in Yuanyang.The results showed that soil texture and organic matter had important effects on soil water retention,soil texture had an indirect effect on the soil water-holding capacity,the organic matter directly affected the soil water-holding capacity,the more the organic matter content was,the stronger the soil water-holding capacity was.Shrub soil had the largest soil water retention,total holding water in the depth of 0-20 cm in shrubs soil was up to 1 404.8 t/hm2;the initial water content of soil had a great effect on initial permeability rate of soil,the waste grassland had the largest initial permeability rate in four land use types.Based on the results,the terraced fields in yuanyang,forest has a strong water-holding capacity and a good infiltration characteristics,and can play the role in hydrological functions of the forest.
国家科技期刊平台
NSTL
万方数据
维普
