关键词: 互花米草, 二次入侵, 有性扩散, 无性繁殖, 崇明东滩

Abstract: Based on the concept of ecotourism and present status of natural reserves in China,thesuporiorities and basic principles for developi ng ecotourism in natural reserves were put forward. According to the principles, natural reserves in China were divided into six ecotourism types.They were:(1)forest ecotourism areas;(2)grassland ecotourism areas;(3)desert ecotourismareas;(4)terrestrial wetland and frcsh water ecotourism areas;(5)ocean and coastal ecotourismareas;(6)ecotourism areas of paleontological fcssil sites.

Key words: Spartina alterniflora, reinvasion, sexual reproduction, vegetative propagation, Chongming Dongtan.