巩留野核桃林土壤的形成及其特征特性

本文研究了我国唯一的野核桃自然保护区的野核桃林土壤的形成条件、形成过程、剖面特片及理化特性。野核桃在巩留凯特明山前峡谷的繁衍生息，并发育着野核桃林土壤，是特殊的地质历史条件和小气候等综合作用的结果，野核桃土壤在长期特定的生物、气候条件下，其腐殖化过程和钙积化过程明显，粘化过程较弱。土壤剖面含硅铝高，但分异明显，具有特色。ＡＳ和Ａ１层质地适中，土体温润，结构良好，富含有机质和养分，春肥力较高，林木自

Formation and Characteristics of Wild Walnut Forest Soils in Gongliu County

his paper studies the formative conditions, formative process, sectional features,physical and chemical properties of wild walnut forest soils in the sole wild walnut nature reserve of our country. The humic process and calcific process are obvious in wild walnut forest soils,but it is weak in argillic process. The soil section contains high Si and Al,but difference is distinct,A. and A, ayers have moderate textures,moist soil bodies,fine structures,rich organic matters and nutrients,its soil fertility is high. These are advantageous to the natural propagation and rejuvenation of wild walnut,and favourable to keeping ecological balance.