菜区趋光性昆虫物种多样性与季节动态分析

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

菜区趋光性昆虫包含１０目４７科１７３种，以鳞翅目和鞘翅目的数量最大，分别占总类数的５４．３３％和２０．８１％。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。物种多样性在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、同翅目和鳞翅目的优势集中性较高。

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.