不同使用方式林地中大型土壤动物功能类群研究

Study on the Functional Groups of Soil Macrofauna Under Different Forest Land Use Patterns

本次研究共捕获大型土壤动物213只,分别隶属2门6纲13类.研究结果显示:优势类群为寡毛纲,蚁科;稀有类群为马陆、蜈蚣目、半翅目、双翅目和鳞翅目.不同使用方式林地中,大型土壤动物的个体密度情况为耕作林地>自然林地,耕作林地的H′指数和e指数最高,自然林地的c指数最高.就类群数而言,自然林地>耕作林地;而大型土壤动物个体数量则均为耕作林地>自然林地;优势类群寡毛纲为自然林地>耕作林地;蚁科为耕作林地>自然林地.在垂直方向上,土壤动物类群数和个体数均在土层0～5 cm处最多,类群数和个体数总体呈现逐层递减状态.

213 soil macrofauna, which belong to 2 phylums,6 Classes,13 kinds, were captured. Research shows that： superiority groups are Oligochaeta and Formicidae; rare groups are Millipedes、Scolopendromorpha,Hemiptera、Diptera、Lepidoptera. Individual density of Soil Macrofauna in different forest land use, cul- tivated forest land〉natural forest land, the H＇ index and the e index of cultivated forest land is highest, the c index of natural forest land is the highest. The number of groups is natural forest land〉cultivated forest land, the number of individual macrofauna is： cultivated forest land〉natural forest land. Oligochaeta of Superiority group is natural forest land〉cultivated forest land, Formicidae of Superiority group is cultivated forest land〉 natural forest land. In the vertical direction, the number of individuals and groups of soil animals is highest in soil 0-5 cm up, the number of individuals and groups overall rendering a layer-by-layer decrement state.