西双版纳大勐龙季节雨林的蝽类昆虫动态分析

HEMIPTEROUS INSECTS AND ITS DYNAMIC ANALYSIS IN SEASONAL RAINFOREST OF DAMENGLONG IN XISHUANGBANNA

1987—1988年,在西双版纳大勐龙曼养光的季节雨林内,按3个时期,在林缘及林心的5个固定样地采虫,对蝽类昆虫的种类,数量及其变动和群落结构等进行了初步研究。 1.季节雨林水平结构内,林缘样地的蝽类科、属、种、个体数及多样性指数明显大于林心样地。 2.季节雨林垂直结构不同层次的蝽类,以中层的科、属、种,个体数及多样性指数占明显优势,特别是1.5—2米的草本层与幼灌层的交错空间内,种类与数量最多,最丰富。

This paper reports the result of works on 5 plots of the seasonal rainforest at Manyanguang, Damcnglong in Xishuangbanaa in 1987-1988. The insect specimens were collected in dry (January, May) and rainy (August) seasons. Major research is based on numbers of individuals, species, genera and families to study the diversity, evenness and dominance of the communities and the seasonal changes of populations of hemipterous insects. 1. In the different plots of the level structure of seasonal rainforest, the species, genera, families, individuals and diversity index of hemipterous insects in the plots E, S, W, N of forest edge more than insects in plot O of the centre forest. The forest marginal effect was quite clear. 2. Making a comparison among numbers of individuals, species, genera, families and diversity index of insects in different layers of 5 plots of the vertical structure of seasonal rainforest, the most number was in middle layer, especially in the crisscross space where high of the herb layer and young scrab layer were 1.5-2m, the species and amount of the insects were the most and the aboundantest.