The Diversity Of Insect Study In Zhalong National Protection Area

Zhalong National Protection Area which is known as "Red-crowned crane's hometown" is China's largest wetland-protected areas, and based on its importance, the insects' diversity in the protection was conducted an investigation and researched from July to August 2005 and from July to September 2006, hoping for providing a theoretical basis and based information for protecting the balance of ecological system and diversity of biodiversity.In this paper, it is studied for the composition of insect communities, the time's dynamics of insect communities and the time's dynamics of diversity from four different habitats, diversity of insect community from four habitats is analyzed, the comparability of spots is contrasted, cluster analysis is made. The results show:1. At the four various habitats Communists from Protected areas, 13184 insect specimens belonging to 13 current, 82 Section and 341 species were collected. Among them, the biggest group is Coleoptera and Lepidoptera, the scientific and insect species of dragonflies though is less, however, its individual is ranked number three. These protected areas are fully embodies the characteristics of various habitats. In addition, according to the insects survey done by Li Chang-you, etc. in 2000, for the first time, the insect directory from the Zhalong Nature Reserve was summed up, and it total current 13, Section 102, 513 species.2. The composition of insect communities and the number of insect species in different habitats are different, its performance of each meadow species richness shows: orchard meadow＞bush swamp meadow＞mixing forest between artificial conifers and hardwood meadow＞reed marshes meadow. Looking at the number of samples obtained: bush swamp meadow＞orchard meadow＞mixing forest between artificial conifers and hardwood meadow＞reed marshes meadow.3. The stilpnotia ochropoda eversmann in mixing forest between artificial conifers and hardwood meadow has caused a serious threat to the ecological balance of this habitat, and suggesting to control.4. The trend of the change in groups number and the individuals number of the insect in various meadow in different time is July＞August＞September.5. Statistics analysis is indicated that the trend of the changes with month in the diversity index (H') is coincident with that of evenness index (J) and richness index (S), and contrary to that of dominance index (D).6. Based on the analysis of community similarity and clustering of each meadow insects, the consistent results show that the four communities have low similarity. Among them, similarity coefficient between insect communities in orchard and insect communities in mixing forest between artificial conifers and hardwood is the highest, and the similarity coefficient between insect communities in orchard and insect communities in bush swamp is the middle, and the similarity coefficient between insect communities in orchard and insect communities in reed marshes is the lowest.