摘要
三峡库区拥有丰富的生境多佯性、物种多佯性与基因多样性，是一个天然生物宝库．然而，由于人类活动长期的强烈干预和破坏，库区生境日趋退化，生物种群发生逆行演替，生物多样性在逐渐减少或丧失．加强对生物多样性保护和研究具有极其重要的现实意义．
he Three- Gorge reservoir area is a mountainous region with diverse habitats and richspeCies, where totally 301 4 speCies of higher plant, 369 spotes of vertebrate, about 350 speciesof aquatic life have been found. in which there are considerable rare and endangered species including about 47 speCies of higher plant, 32 species of vertebrate, 19 species of bird, 16 speCiesof fish. Since the long--term overuse and intense exploitation of natural resources, as well as theconstruction of the Three-Gorge Project , the human-land relationship is getting even worSe, thehabitats are degrading and the biodiversity is changing and decreasing. The change trends are:(1 ) The land area and natural ecosystenis will decrease, while the water area and man-made e-cosystems will increase ; (2) Biotic communities are becoming poor in spotes, forest communitiesare deClining, and secondary and artificial woods, shrubs, grass and crops are iner^ing. In order to protect the biodiversity and maintain the ecological balance, the authors suggeSt to restorevegetation, establish natural reserves, rationally settle migrants, keep suitable urban developmentlevel, and develop ecological tourism.
出处
《热带地理》
北大核心
1997年第4期412-418,共7页
Tropical Geography
关键词
三峡库区
生物多样性
变化态势
保护对策
Three-Gorges reservoir area
biodiversity
change situation or trend
conservation countermeasures
