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对深圳湾红树林引种的外来种海桑 (Sonneratiacaseolaris (L .)Engl.)和无瓣海桑 (S .apetalaB .Ham .)的生态适应性、扩散现状及生态入侵的可能性进行了研究。结果表明 :海桑和无瓣海桑对深圳湾的气温、盐度、潮滩与土壤等基本适应 ,虽然极端低温是其生长定居的限制因子 ,但其子代的抗寒性逐渐增强 ,在局部区域有一定的繁殖力和扩散力 ,生态效益明显。从种群生物生态学特性、生态位理论、群落更新理论等方面分析认为 ,海桑和无瓣海桑在深圳湾造成生态入侵的可能性不大。
The ecological adaptability, spread status and ecological invasion of exotic species Sonneratiacase lar (L.) Engl. And S.apetala B. ham introduced in mangroves of Shenzhen Bay were studied. The results showed that both the sea cucumber and Haloxylon ammodendron adapt to temperature, salinity, tidal flat and soil in Shenzhen Bay basically. Although extreme low temperature is a limiting factor for its growth and colonization, the cold resistance of its offspring is gradually increased. Some areas have a certain fecundity and dispersal, ecological benefits are obvious. From the aspects of population bioecology, niche theory and community renewal theory, it is concluded that there is little possibility that Haisang and Anemarrhena asphodeloides could cause ecological invasion in Shenzhen Bay.