岷江上游干旱河谷区土壤水分含量及其动态  

Soil Water Content and Its Dynamics in Arid River Valley Region in Upper Reaches of Minjiang River

作　　者：严代碧[1] 岳永杰[1] 郑绍伟[2] 吴永波[3] 潘攀 何飞[2] 刘兴良[2] 宿以明[2] 慕长龙[2] 

机构地区：[1]北京林业大学资源与环境学院 [2]四川省林业科学研究院,四川成都610081 [3]江苏省林业生态工程重点实验室(南京林业大学),江苏南京210037

出　　处：《南京林业大学学报（自然科学版）》2006年第4期64-68,共5页Journal of Nanjing Forestry University：Natural Sciences Edition

基　　金：国家"十五"科技攻关项目(2001BA510B03)

摘　　要：于2002年8月～2003年7月对四川西部理县干旱河谷区土壤水分状况进行了定位研究。结果表明：在理县干旱河谷区，不饲海拔高度0～50cm土层土壤平均含水量总的变化趋势是阴坡比阳坡高。而土壤水分空间异质性阳坡比阴坡大。同一坡向不同海拔的土壤含水量变化为2050m处的最高，1850m处的次之，1450m处再次之，1650m处最少，表明了在干旱区河谷的两岸坡面上部土壤水分状况最好，在坡面下部靠近河流处次之，中下坡水分条件最差。相同海拔高度，不同坡向土壤含水量都表现为随着土层深度的增加土壤含水量增加的趋势，且30～50cm土层的土壤含水量最高。In this paper, researches were made on soil water conditions in arid river valley, Lixian,Sichuan from August 2002 to July 2003. The results.showed that average soil water content at 0-50 cm depth at northern slope for different altitudes was higher than that at southern slope,while the reverse was for spatial heterogeneity of soil water. For the same slope aspect,the order of soil water contents in terms of altitudes was 2 050 m〉1 850 m〉1 450 m〉 1650 m. For the same altitude,soil water contents at different slope aspects all increased with increasing soil depth and the highest soil water content occurred at the depth of 30-50 cm.

关 键 词：岷江上游 干旱河谷区 土壤水分 

分 类 号：S718[农业科学—林学]