应用群落结构、种群动态、相对丰富度等指标，对不同农业防治措施下，麦（玉米）&棉复合生态系统中节肢动物群落，及其各类群的结构与动态进行了研究。
The structure and dynamics of the arthropod community and groups in whcat ( maize ) - cotton system were studied at different agricultural measures by using richness , mean density , diversity and evenness indices .
动态相对指标