不同针叶林对祁连山森林灰褐土理化性质和水源涵养.pdf

30 5 Vol.30, No.5 2010 10 Bulletin of Soil and Water Conservation Oct., 2010 　 1 2 3 4 4 秦嘉海 , 魏淑莲 , 金自学, 刘金荣, 谢晓蓉 (1. , 734000;2., 733014; 3., 734000;4., 734000) 　:、、3, 。, 、、 ;、;、C C ;CaCO 、pH 、 ; 3 。 :;;;; :A 　　　　　　:1000-288X(2010)05-0084-04　 :S157.5 Effectsof Tree Species on Gray-brown Soil Propertiesand WaterConservation in Qilian Mountains 1 2 3 4 4 QIN Jia-hai , W I Shu-lian , JIN Zi-xue , LIU Jin-rong , XI Xiao-rong (1.Department of Ag riculture, Hexi College, Zhangye, Gansu 734000, China;2.X iy ingheForestry Experiment Site of Sunan County, Wuwei, Gansu 733014, China;3.Hexi Institute of Ecology, Zhangye, Gansu 734000, China;4.ey Laboratory of Resources and Environmental Chemistry of West Area, Zhangy e, Gansu 734000, China) Abstract:The effects of tree species (Picea crassif olia, Pinus tabulaef ormis, and Platycladusorientalis)on gray- brown soil properties and water conservation in Qilian Mountains are studied.Results show that by total soil porosi- ty, soil granular-structure, and soil clay content, tree species are in the order of Piceacrassif olia Pinus tabulae- f ormi Platycladusorientalis;by soil density and soil sand content, in the order of Picea crassif olia Pinus tabulaef ormis Platy cladusorientalis;by soil organic matter and C C, in the order of Picea crassi- f olia Pinus tabulaef ormis Platy cladusorientalis;by CaCO3, pH, and total soil salt, in the order of Pice