菜区趋光性昆虫物种多样性与季节动态分析

菜区趋光性昆虫包含10目47173 ，以鳞翅目和鞘翅目的数量最大，分别占总类数的54．33％和28．81％。3月中旬－5月上旬．10月上旬－12月中旬间物种数出现两个高峰，且后者明显高于前者。物种多相关性一在4月上旬－5月上旬、9月份、11月下旬－翌年1月份较高，其变化同物种数和个体数量有关。不同季节均以鞘翅目、同翅目和鳞翅目优势集中性较高。

DIVERSITY AND SEASONAL DYNAMICS OF LIGHT-TRAPPED INSECTS IN VEGETABLE FIELDS

10orders, 47 families, 173 species of insects were attracted by light - trap in vegetable fields at Shenzhen Ecological Village. The species numbers of Lepidoptera and Coleoptera were the highest, and represented 54.33% and 20.81% of the trap total respectively. There were two peaks of species number between the mid-March and the early May, and between the early October and the mid-December, and the latter was higher than former. Between the early April and May, September, and between last November and January, the species diversities were high relative-ly which change related with the species number and the individual number. Dominance centrality indexes of Coleoptera, Homptera, and Lepidoptera were high in different seasons.