作　　者： ; ; ; ;

机构地区： 华南农业大学

出　　处： 《生态科学》 2003年第1期38-41,共4页

摘　　要： 本文利用群落结构的有关指数(物种数S、丰富度指数R、多样性指数H、H’、D和DMc、均匀性指数J’、优势度指数d和优势集中性指数 C)分析了葛藤节肢动物类群结构变化动态。结果表明,葛藤节肢动物类群丰富度和多样性一年中出现两个高峰,一个在五月下旬,一个在十一月上中旬,在第一个峰期,S,R,D,H’,H和DMc的值依次为38.00,6.0205,0.9056,4.0205,3.8560和0.7207,在第二个峰期,上述指数依次为34.00,6.6661,0.9245,4.2124,3.6779和0.7808;均匀性在一至四月变化较剧烈,最大值0.8899出现在1月中旬,最小值0.5765出现在二月下旬,其它时间较为平稳;优势集中性和优势度指数的变化趋势一致,其高峰值出现在二月下旬至三月上旬。分析表明,多样性和优势集中性变化趋势往往相反,即物种越丰富,多样性越大,相应的优势集中性就越小,反之就大;均匀性与多样性关系密切,即群落多样性较高时均匀度变化较为平稳,反之,就剧烈。 In this paper, dynamics of structure of Arthropod groups in Kudzu Pueraria lobata was analyzed based on parameters of richness [the number of species (S), richness of species (R)], diversity [Shannon-Wiener index (H'), Brillouin index (H), Simposon index (D), and Mclntosh index (DMc)], evenness (J'), dominance [dominance degree (d) and dominance concentration degree (C)J. Two peaks of the richness and diversity occurred in a year, one in late May and the second in November. During the period of first peak, indexes of 5, R , D, H', H and DMc were 38.00, 6.020 5, 0.905 6,4.020 5, 3.856 0 and 0.720 7, respectively. In the second peak period, the values above parameters were 34.00, 6.666 1, 0.924 5,4.212 4, 3.677 9 and 0.780 8 respectively. The index J' fluctuated significantly from January to April, with maximum (0.889 9) in middle January and minimum (0.576 5) in late February. The same trend of d comparing with C was found and its peak occurred in late February to early March. It showed that there was an opposite trend between diversity and dominance and that a consanguineous relation between evenness and stability was found.

关 键 词： 葛藤 节肢动物 群落结构 生物群落 生态系统

领　　域： [生物学]