多年生人工柠条林生长对土壤水分的影响  

Effects of Perennial Caragana korshinskii Kom on Soil Moisture

作　　者：王松伟 郭忠升[1,2] WANG Songwei;GUO Zhongsheng(Institute of Soil and Water Conservation,Northwest A&F University,Yangling,Shaanxi 712100,China;Institute of Soil and Water Conservation,CAS&MWR,Yangling,Shaanxi 712100,China)

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

出　　处：《水土保持研究》2020年第3期70-75,共6页Research of Soil and Water Conservation

基　　金：国家自然科学基金“黄土丘陵半干旱区人工柠条林地土壤水分承载力研究”(41071193);国家自然科学基金“黄土丘陵半干旱区人工林草地土壤水资源利用限度”(41271539)。

摘　　要：研究多年生人工柠条林地生长对土壤水分的影响,对水资源紧缺的黄土丘陵区植被重建和生态建设具有重要的意义。以多年生的柠条林为对象,采用中子水分仪对黄土丘陵半干旱区(宁夏固原)多年生的柠条林地及撂荒地土壤水分进行长期定位观测与分析,研究了多年生人工柠条林生长对土壤水分的影响。结果表明:柠条林地和撂荒地各深层土壤容积含水量分别为4.18%~14.67%和2.87%~15.01%,柠条林地各个深度土层的土壤容积含水量普遍低于撂荒地同等深度土层土壤容积含水量。多年生的人工柠条林地同撂荒地二者的土壤容积含水量变异系数区间分别是3.27%~31.12%和7.39%~34.63%,都随土层深度增加而逐渐减小,是该区域土壤容积含水量变异系数所具有的共性。多年生的人工柠条林对200 cm以下深层土壤水分的消耗影响深远。It is of great significance to study the effects of planted Caragana korshinskii Kom soil moisture in loess hilly area with scarce water resources. The perennial Caragana korshinskii Kom land was selected as the study site. The long-term localization observation on soil moisture in perennial Caragana korshinskii Kom land and abandoned land was carried out by using a neutron moisture meter in the semi-arid area of the Loess Plateau(Guyuan of Ningxia) in order to analyze the effects of the planted perennial Caragana korshinskii Kom on soil moisture. The volumetric water contents of layers in deep soil in Caragana korshinskii Kom land and abandoned land ranged between 4.18 % and 14.67 %, and between 2.87%~15.01%, respectively. The soil volumetric water content of each deep soil layer in Caragana korshinskii Kom land was generally lower than that of the same depth soil in the abandoned land. The variation coefficients of soil volume water contents in the perennial Caragana korshinskii Kom land and abandoned land were 3.27%~31.12%, and 7.39%~34.63%, respectively. The variation coefficients of soil volume water contents in this area gradually decreased with the increase of soil depth. The perennial Caragana korshinskii Kom has the profound impact on the consumption of soil moisture in the depth below 200 cm.

关 键 词：土壤容积含水量 变异系数 土壤水分 

分 类 号：S714.2[农业科学—林学]