伊犁谷地野果林下的土壤形成特点及其系统分类  

THE FORMATION CHARACTERISTICS AND TAXONOMIC CLASSIFICATION OF THE SOIL UNDER THE WILD-FRUIT FORESTS IN YILI VALLEY, XINJIANG

作　　者：刘立诚[1] 排祖拉[1] 徐华君[1] 

机构地区：[1]新疆大学地理系,乌鲁木齐830046

出　　处：《干旱区地理》1997年第2期34-40,共7页Arid Land Geography

摘　　要：本文对伊犁谷地野果林下土壤的形成特点进行了研究，在此基础上，根据《中国土壤系统分类（修订方案）》[1]探讨了研究剖面在土壤系统分类中的地位和归属．The wild-fruit forests in Yili Valley occupy an area of 11330 hm2. which takes 89.5% of the total area of wild-fruit forests in Xinjiang. The formation characteristics and taxonomic classification of the soil under the wild-fruit forests are studied in the paper.The results are as follows:(1) The soil under the wild-fruit forests in Yili Valley distributes over the gentle slopes and valleys between 1100 and 1700 m a.s.l. The mean annual air temperature is 7℃, annual precipitation is 550-750 mm, aridity is 1.85, and mother soil is loess-like material. (2) HA / HF is 1.05-5.75, E4 value is 1.42-2.50. The sequence of E4 value is: the soil under wild apple forests > that under wild apricot forests > that under wild walnut forests. (3) The iso-humic property, Rh is 0.32-0.39.(4) The clayization rate is 1.02-2.10, belongs to secondary clayization.(5) The calcic phenomenon, CaO bio-returning rate is 264-570.(6) The sequence of Ba value is: the soil under wild apple forests > that under wild walnut forests > that under wild apricot forests.(7) The clay minerals main1y include illite, montmorillonite and vermicutite.(8) The classiflcation of soi1 under wild-fruit forests include soil orders, soil sub-orders, soil groups, and soil sub-groups.

关 键 词：野果林 土壤形成特点 系统分类 伊犁谷地 

分 类 号：S151[农业科学—土壤学]