左云县店湾镇春季不同植被条件下土壤含水量研究  

Research on Soil Moisture Content in Different Vegetation in Dianwan Town of Zuoyun County

作　　者：张秀伟[1] 牛俊杰[2] 赵景波[1] 

机构地区：[1]陕西师范大学旅游与环境学院,西安710062 [2]太原师范学院汾河流域科学发展研究中心,山西晋中030619

出　　处：《水土保持研究》2015年第5期52-57,共6页Research of Soil and Water Conservation

基　　金：国家自然科学基金项目"晋西北生态重建优势种林地土壤水分研究"(41171423)

摘　　要：为了研究左云县店湾镇春季不同植被条件下0—600cm深度范围内土壤垂直剖面水分变化特征,分别对该区乔木(白榆和小叶杨)林地、灌木(柠条和沙棘)林地和草地5种不同植被条件下土壤水分进行了研究。结果表明:研究区不同植被条件下土壤剖面含水量变化规律不同。左云县矿区春季各土层平均含水量草地最高,柠条林地次之,白榆林地最少。其中草地各土层平均含水量比柠条林地高0.3%,比白榆林地高3.8%。该区各植被条件下土壤水分主要呈难效水状态。且各植被条件下土壤在200—400cm深度范围内都存在干层,有轻度干层、中度干层和重度干层发育。该区水循环主要是地表水循环,地下水循环基本不存在,形成了土壤—植物—大气的水分循环模式,属于异常水分循环类型。In order to investigate the changes of soil moisture in different soil layers within the depth of 0—600cm under different vegetation in Zuoyun Town in spring,we determined the soil moisture of five different types of vegetation such as Arbor woodland（Ulmus pumilaand Populus simonii Carr）,shrub woodland（Caragana Korshinsk and Hippophae rhamnoides）,and grassland.The results showed that soil moisture of different vegetation had different patterns.The average moisture content of grassland was the highest.Caragana korshinskii was lesser and Ulmus pumila was the least in spring in Zuoyun mining area,the average soil moisture of the grassland was 0.3%higher than Caragana Korshinsk while 3.8% higher than Hippophae rhamnoides.Soil water of the vegetation land in the area was the difficult unavailable water.Each profile of the vegetation land in the 200—400cm soil layer existed dry soil layer which had developed mild dry soil layer,moderate dry soil layer and severe dry soil layer.Water cycle was mainly ground water cycle,and didn′t exist basically groundwater circulation.Soil-plant-atmosphere water cycle model was formed and belonged to abnormal water cycle type.

关 键 词：土壤含水量 土壤水分有效性 土壤干层 水循环与水平衡 左云县 

分 类 号：S152.7[农业科学—土壤学]