重庆市生物多样性与生境敏感性评价

Evaluation of biodiversity and habitat sensitivity in Chongqing

生境是生物赖以生存的空间,影响着生物的生长、发育和繁衍。重庆市有着丰富的动植物资源,其中高等植物有5000余种,脊椎动物有700多种,珍稀保护物种主要分布在盆周山地;生态系统的类型多样,但生态系统的构成和分布不合理。利用生境敏感性指数密度法对重庆市生境敏感性的评价结果比生境敏感性指数法更符合实际,其评价结果是:南川金佛山和渝东北大巴山为极敏感区,江津四面山为高度敏感区,方斗山-七曜山、秀山-黔江和三峡库区为中度敏感区,渝西丘陵区和都市圈是不敏感区。

Habitat is the space for species to live and influences the species＇ growth and reproduction. The animals and plants of Chongqing city were abundant, including about 5000 kind advanced plants and more than 700 kind vertebrates. The protected species mainly distributed in the mountains around the basin. The kinds of ecosystem were multiformity in Chongqing,but the structures and distributions of the ecosystem were unreasonable. The results of the habitat sensitivity evaluation acquired by the density of sensitivity index were more reasonable than that of the sensitivity indexes. The evaluation results were that ：Jinfo mountains and Daba mountains were the highest sensitive areas; Simian mountains was higher sensitive areas. The moderate sensitive areas included Fangdou-qiyao Mountains ,Xiushan-Qianjiang and Three Gorges reservoir. Hill areas in west of Chongqing city and Urban belonged to commonly sensitive areas.