四川紫色土丘陵区不同土地利用方式下中型土壤动物群落结构  

Community structure of soil mesofauna under different land use patterns in purple soil hilly area of Sichuan Basin

作　　者：吴玉红[1] 蔡青年[2] 林超文[3] 赵欣[2] 程序[2] 

机构地区：[1]中国农业大学资源与环境学院,北京100193 [2]中国农业大学农学与生物技术学院,北京100193 [3]四川省农业科学院土壤肥料研究所,成都610066

出　　处：《生态学杂志》2009年第2期277-282,共6页Chinese Journal of Ecology

基　　金：国家重点基础研究发展计划资助项目(2006CB100206)

摘　　要：2006年冬季和2007年春季对四川紫色土丘陵区农田边界、农田、果园和退耕林地4种不同土地利用方式的中型土壤动物进行了调查。结果表明:4种土地利用方式共获得中型土壤动物5756只,分别隶属于8纲、20类,其中优势类群为蜱螨目和弹尾目,常见类群为膜翅目和双尾目;不同土地利用方式中型土壤动物群落的个体密度和DG多样性指数存在明显差异,退耕林地、果园和农田边界的个体密度在冬季和春季均显著高于农田,DG多样性指数在春季显著高于农田;中型土壤动物群落的个体密度和类群数随着土层深度增加而减少,但个体密度表聚性要比类群数明显;土地利用方式对中型土壤动物的群落结构有明显影响,半自然生境农田边界和退耕林地的存在对于中型土壤动物生物多样性的保护具有重要意义。In winter 2006 and spring 2007, an investigation was made on the soil mesofauna under four land use patterns （field margin, farmland, orchard, and forestland returned from farmland） in purple soil hilly area of Sichuan Basin. A total of 5756 soil mesofauna individuals belonging to 8 classes were captured. The community structure of soil mesofauna in study area varied significantly with land use pattern. Field margin, orchard, and forestland had a significantly higher individual density than farmland both in winter and in spring, and a significantly higher DG diversity index than farmland in spring. The individual density and group number of soil mesofauna all decreased with increasing soil depth, but the surface gathering of individual density was more obvious than that of group number. Land use pattern strongly affected the community structure of soil mesofauna, and field margin and forestland played important roles in conserving the diversity of soil mesofauna.

关 键 词：中型土壤动物 群落结构 多样性 土地利用 紫色土丘陵区 

分 类 号：Q958.15[生物学—动物学] S154.5[农业科学—土壤学]