黄土丘陵区柠条林地土壤水分垂直变化  

Vertical Variations of Soil Water in Shrubland of Caragana Microphylla in Hilly and Gully Areas of Loess Plateau

作　　者：王振凤[1] 郭忠升[2,3] 郭满才[1] 袁志发[1] 赵龙[1] 

机构地区：[1]西北农林科技大学理学院,陕西杨凌712100 [2]西北农林科技大学水土保持研究所,陕西杨凌712100 [3]中国科学院水利部水土保持研究所,陕西杨凌712100

出　　处：《水土保持通报》2012年第6期71-74,共4页Bulletin of Soil and Water Conservation

基　　金：国家自然科学基金项目"黄土丘陵半干旱区人工柠条林地土壤水分承载力研究"(41071193);中央高校基本科研业务费专项资金(QN2010101)

摘　　要：为了解水资源紧缺地区多年生林地的土壤水分状况,采用中子仪测定法,于2002-2006年对宁夏自治区固原市上黄生态试验站人工柠条林地(生长季4-10月)的土壤水分进行了监测。并应用隔室分析法建立了土壤水分垂直变化模型,对柠条林地土壤水分实测数据进行了拟合。分析结果表明,在参数取值特定的条件下,模型可表达试区内不同降雨条件下柠条人工林下的土壤水分垂直变化,拟合优度R2符合统计学要求,模型具有较好的应用价值。In order to understand the status of soil water under perennial woodlands in the water-limited regions,soil moisture were observed using the neutron probe in the soil profile under Caragana microphylla shrubs in the semi-humid region of the Loess Plateau during April to November from 2002 to 2006.A compartment model was used to study the vertical changes of soil water.The results showed that the characters of vertical variations of the moisture in the profiles were described well by the model with the specifically calibrated parameters and the goodness of fit met the statistical requirement,suggesting a great potential applicability of the model to the similar areas.

关 键 词：人工柠条林地 土壤水分 垂直变化 

分 类 号：S152.75[农业科学—土壤学]