准噶尔盆地新建防护林对林下土壤理化性状的影响  

Effects of newly-constructed shelterbelt on soil physical and chemical properties in Junggar basin,Xinjiang

作　　者：阿迪力.吾彼尔 袁素芬[1] 赵万羽[1] 

机构地区：[1]中国科学院新疆生态与地理研究所,新疆乌鲁木齐830000

出　　处：《干旱区地理》2007年第3期420-425,共6页Arid Land Geography

基　　金：国家支撑项目(2006BACOLA03.2006BAD26B09)资助

摘　　要：以准噶尔盆地西南缘克拉玛依新垦绿洲防护林(包括杨树林、沙枣林、榆树林、紫穗槐林和枸杞等)带内土壤为研究对象,测定其土壤理化性状。结果表明:不同防护林带内土壤表层的容重都低于土壤下层;新建林带后土壤肥力呈增加趋势,榆树林地土壤养分最高,沙枣和枸杞林地较低;不同建植林分的土壤盐分变化(增减)方式有差异;杨树林随着建成年限的增加,土壤中总盐含量明显降低。Junggar basin is a representative of arid lands at northwestern China. The effect of the shelterbelt system on soil characteristics is evaluated in newly-cultivated oasis of Karamay in southwestern Junggar basin. The emphasis in this paper is to measure the soil physical and chemical properties and then probe the improvement effects of shelterbelt system on soil. The protection forests include Populus euphratica, Tamarix ramosissima, Populus boUeana, Lyeium barbarum, Ulmus pumila, Elaeagnus angustifolia and Amorpha fruticosa. And the soil physical and chemical properties evaluation includes soil bulk density, soil nutrient content and soil solute salt. The results indicate that the shelterbelts have a notable impact on physical and chemical characteristic of soil. They could improve the soil physical structure. The construction of shelterbelts enhanced the soil fertility to a certain degree. The soil fertility in Ulmus pumila was the highest while it was the lowest in Lycium barbarum and Elaeagnus angustifolia. Total salinity content of soil in Populus euphratica obviously is reduced, along with the ages of shelterbelts increased, which had suppressed occurrence of the soil salification.

关 键 词：准噶尔盆地 新垦绿洲 防护林 土壤 理化性状 

分 类 号：S714[农业科学—林学]