祁连山排露沟流域典型植被土壤水文功能及增贮潜力评价  

Soil Hydrological Function and Increasing Storage Potentiality of Typical Vegetation in Pailugou Watershed of Qilian Mountains

作　　者：张鑫 牛赟[1,2] 王立 王顺利[3] 敬文茂 Zhang Xin;Niu Yun;Wang Li;Wang Shunli;Jing Wenmao(College of Forestry, Gansu Agriculture University, Lanzhou 730070, China;Academy of Water Resources Conservation Forests of Qilian Mountains,Zhangye 734000, China;The College of Urban and Environmental Sciences, Huaiyin Normal University, Huaian 223300, China)

机构地区：[1]甘肃农业大学林学院,甘肃兰州730070 [2]淮阴师范学院城市与环境学院,江苏淮安223300 [3]甘肃省祁连山水源涵养林研究院,甘肃张掖734000

出　　处：《防护林科技》2018年第4期5-8,76,共5页Protection Forest Science and Technology

基　　金：国家自然科学基金项目(31360201,91425301,41461004)

摘　　要：以黑河上游祁连山区为研究对象,定量评估了不同时空尺度的土壤水文功能及增贮潜力,结果表明:0~60cm土层土壤总孔隙度、毛管孔隙度、非毛管孔隙度变化范围分别为57.61%~80.76%、46.18%~56.37%和8.68%~26.71%,平均值分别为70.37%、52.75%和17.63%;土壤最大持水量、田间持水量和毛管持水量变化范围分别为50.28%~198.91%、42.15%~137.32%和37.03%~172.08%,平均值分别为116.26%、87.57%和98.01%;青海云杉林、高山灌丛林、阳坡草地3种植被类型土壤蓄水量分别为1 245.22、1 847.38和978.18t·hm^(-2);土壤水资源增贮潜力表现为高山灌丛林>青海云杉林>阳坡草地,其值分别为28.69%、26.84%和17.28%。可见,高山灌丛林土壤水资源增贮潜力最大。Taking Qilian Mountains in the upper reaches of the Heihe River as the research object,the soil hydrological function and increasing storage potential of different spatio-temporal scales were assessed quantitatively.Result shows that the variation range of total porosity,soil capillary porosity and soil air-fiued porosity at 0-60 cm soil layer is 57.61-80.76%,46.18-56.37% and 8.68-26.71%,respectively;the mean value is 70.37%,52.75% and 17.63% respectively;the range of maximum water holding capacity,field holding capacity and capillary holding capacity is 50.28-198.91,42.15-137.32% and 37.03-172.08%,respectively;the mean value is 116.26%,87.57% and 98.01% respectively;the soil water storage capacity of the three vegetation types of Picea crassifolia forest,alpine shrub forest and sunny slope grassland are 1 245.22 t· hm^（-2）,1 847.38 t· hm^（-2） and 978.18 t· hm^（-2）;the potentiality of soil water resource increasing storage is alpine shrub forestPicea crassifoliaforest sunny slope grassland,the values is 28.69%,26.84% 17.28% respectively.It can clearly be seen that the increasing storage potential of the soil water resources in alpine shrub lands is the highest.

关 键 词：祁连山 排露沟流域 土壤孔隙度 水文功能 增贮潜力 

分 类 号：Q948.156[生物学—植物学]