农田生态系中作物构成与节肢动物群落多样性关系的初步研究

Preliminary Studies on the Relationship between Crop Structure and Diversity of Arthropod Community in Agro-Ecosystem

对10种农作物田间节肢动物群落结构进行分析,结果表明:不同作物田间节肢动物群落的丰富度、多样性和均匀度均表现出较大差异。调查并研究了农田生态系中不同作物构成水平对节肢动物群落特征的影响。农田生态系中节肢动物群落丰富度、多样性与作物构成呈显著正相关,而均匀度与作物构成则无显著相关。在某一作物构成水平上,节肢动物群落多样性指数大小的顺序为H′中>H′害>H′天。

Arthropod communities in the fields of 10 crops in the agro-ecosystem were analyzed. The results indicated that there were significant differences in their diversity, abundance and evenness. The effects of crop structure on diversity of these arthropod communities were also studied. The results showed that there was significantly positive correlation between diversity, abundance of arthropod community and crop structure in the agro-ecosystem. There was no correlation in their evenness. Diversity indexes of arthropod communities were H′_中>H′_害>H′_天 on the level of any crop structure.