兴隆山自然保护区海拔高度与昆虫种类分布关系初探

Preliminary Study on Relation between Insect Species Distribution and Altitude in Xinglongshan Nature Reserve in Gansu Province

对兴隆山自然保护区海拔高度与昆虫种类分布关系进行了分析.结果表明,在兴隆山保护区昆虫主要集中在海拔2 000～2 600 m范围内.昆虫种类数量随海拔高度增加而减少,但2 000 m梯度的种类数量(316种)低于2 200 m和2 400 m(676种和423种).从3类昆虫在各梯度的分布来看,2 200 m处的有害昆虫和天敌昆虫种类最多(217种和71种),但2 000 m处的有害昆虫所占比例最高(34.49%),而天敌昆虫所占的比例在3 200 m处最高(22.58%).

In this paper, the relation between insect species distribution and altitude in Xinglongshan nature reserve was analyzed. The results showed that the insects mainly ranged from altitude 2 200 to 2 400 m in Xinglongshan nature reserve. The insect species decreased gradually with the raising of altitude. However, the insect species in 2 000 m （316 species） were fewer than 2 200 m （676 species） and 2 400 m （423 species）.Observed from distribution of three types of insects in different altitude locations, ①pest insects and natural enemies insects were the most species in 2 200 m（217 and 71 species） ; ②pest insects in 2 000 m had the greatest proportion （34.49%） ;③natural enemies insects in 3 200 m had the greatest proportion （22.58%）.