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生态学杂志 ›› 2011, Vol. 30 ›› Issue (12): 2849-2856.

• 研究报告 • 上一篇    下一篇

不同土地利用方式下土壤动物群落的聚类与排序

章家恩1,2,3**,秦钟1,2,3,李庆芳1,2,3   

  1. 1华南农业大学农学院生态学系, 广州 510642; 2华南农业大学农业部生态农业重点开放实验室, 广州 510642;3华南农业大学广东省高等学校农业生态与农村环境重点实验室, 广州 510642
  • 出版日期:2011-12-08 发布日期:2011-12-08

Clustering and ordination of soil animal community under different land-use types.

ZHANG Jia-en1,2,3**, QIN Zhong1,2,3, LI Qing-fang1,2,3   

  1. 1Department of Ecology, College of Agriculture, South China Agricultural University, Guangzhou 510642,  China; 2Key Laboratory of Ecological Agriculture of Ministry of Agriculture of the People’s Republic of China, South China Agricultural University, Guangzhou 510642, China; 3 Key Laboratory of Agroecology and Rural Environment of Guangdong Regular Higher Education Institution,  South China Agricultural University, Guangzhou 510642, China
  • Online:2011-12-08 Published:2011-12-08

摘要: 对广州天河城市化地区林地、草地和农田3种土地利用方式下,6个代表性的样地中小型土壤动物群落进行了调查,共捕获中小型土壤动物1623个,共26个类群,其中线虫纲(Nematoda)、蜱螨目(Acarina)和弹尾目(Collembola)为优势类群,共占总捕获量的79.1%。不同样地生境中土壤动物的类群组成以及个体数不同。总体来看,林地、农田、草地土壤动物群落的Shannon多样性指数、复杂性指数均依次降低,Pielou均匀性指数、Margalef丰富度指数均以林地为最高。对土壤动物的聚类和排序结果表明,研究区中小型土壤动物可划分为4大类,其中第1类由3种优势类群组成;第一、二排序轴分别反映了土壤理化性质、土地利用类型(以人类干扰程度不同为主要特征)对土壤动物组成及分布的影响。

关键词: 净初级生产力, 演替阶段, 气候响应

Abstract: An investigation was conducted on the soil meso- and micro-fauna in six representative sampling plots of three land-use types (forestland, grassland, and farmland) in Tianhe district, Guangzhou City. A total of 1623 individuals were collected, belonging to 26 groups. The dominant groups were Nematoda, Acarina,andTurbellaria, occupying 79.1% of the individuals collected. Both the group composition and the individual’s number of the soil animals differed in the six plots. Overall, the Shannon diversity index and complexity index of the soil animal community decreased in the order of forestland > farmland > grassland, and the Pielou evenness index and Margalef richness index were the highest in forestland. Through hierarchical clustering and non-metric multidimensional scaling, the soil meso- and micro-fauna in study area could be divided into four groups, and the first group was composed of three dominant species. Axis 1 and Axis 2 reflected the effects of soil physical/chemical properties and land-use type, respectively.

Key words: net primary productivity (NPP), successional stage, climatic responses.