元阳梯田水源区土壤蓄水量动态研究  

Dynamic Study on the Soil Water Storage in Water Source Area of Terrace at Yuanyang County

作　　者：张娟 宋维峰 ZHANG Juan;SONG Weifeng(Shanxi Lvyao Ecological Engineering Consulting Co.Ltd.,Xi'an Municipality of Shanxi Province 710016;Wetland College of Southwest Forestry University,Kunming Municipality of Yunan Province 650224)

机构地区：[1]陕西绿垚生态工程咨询有限公司,陕西西安710016 [2]西南林业大学湿地学院,云南昆明650224

出　　处：《亚热带水土保持》2024年第3期21-26,33,共7页Subtropical Soil and Water Conservation

摘　　要：通过测定和计算元阳梯田水源区乔木林地、灌木林地、荒草地3个标准径流小区上、中、下等部位不同土层的土壤蓄水量,分析元阳梯田水源区土壤蓄水量的变异特征。结果表明:不同土层土壤蓄水量差异明显,表层土壤蓄水量变动幅度较深层剧烈,土壤蓄水量大小顺序为乔木林地<灌木林地<荒草地;深层土壤蓄水量大小顺序为乔木林地>灌木林地>荒草地。土壤蓄水量季节变化较为明显,0~100cm土层土壤蓄水量表现为乔木林地(227.05mm)>灌木林地(163.14mm)>荒草地(143.11mm);土壤蓄水量月动态变异系数关系为:乔木林地(12.77%)荒草地(11.16%)>灌木林地(10.78%)。随着时间的推移,土壤蓄水量呈现先增后减的趋势,土壤蓄水量具有明显的季节变化和垂直变异特征。Through the measurement and calculation of the soil water storage at the different soil layers at the upper,middle and lower part in 3 standard run-off plots of arbor forest,shrub land and wild grass land,it was analyzed the variation features of the soil water storage in water source area of terrace at Yuanyang County.The results show that,there are significant differences in soil water storage capacity among different soil layers,with surface soil water storage varying more dramatically than in deeper layers.The order of soil water storage was arbor forest<shrub land<wild grass land while the order of water storage in deep soil layer was arbor forest>shrub land>wild grass land.The seasonal variation of soil water storage is more obvious,with the soil water storage at the soil layer from O to 100 cm showing the order of arbor forest(227.05 mm)>shrub land(163.14 mm)>wild grass land(143.11 mm).The relationship between monthly dynamic coefficient of variation of soil water storage is as follows:arbor forest(12.77%)>wild grass land(11.16%)>shrub land(10.78%).As time goes on,soil water storage appears the trend of first increasing and then decreasing,with obvious seasonal and vertical variation of soil water storage.

关 键 词：土壤蓄水量 动态研究 元阳梯田 

分 类 号：S152.7[农业科学—土壤学]