海南南红稻田杂草群落物种多样性指数的测定及评价

Determination and Evaluation of the Species Diversity Indices of Weed Community in the Paddy Field of Nanhong, Hainan Province

以株数、盖度、重要值为测定指标 ,运用物种丰富度指数 (S)、Shannon Wiener指数 (H’)、、Gini指数(D’)、Pielou均匀度指数 (ShannonE ,GiniE)以及生态优势度 (SN)等指数对南红农场稻田杂草群落进行物种多样性分析 ,结果表明 :重要值作为测定指标 ,反映多样性水平最合理 ,Shannon

Using the variables of plant number, coverage and importance value as indice, the species diversity weed community in the paddy field of Nanhong was analysed by means of richness index( S ), Shannon wiener index( H '), Gini index( D '), Pielou evenness index( ShannonE,GiniE ) and ecological superiority( SN ). The results showed that importance value was the most reasonable variable to indicate the weed species diversity, and Shannon Wiener index was more suitable for monitoring the weed species diversity.