The ecological effect of mangrove Sonneratia apetala mixed with three local mangrove species
ZENG Wen-jun1, LIAO Bao-wen1, CHEN Xian-ren2, SU Juan2, MA Shu-quan3, GUAN Wei1
1. The Research Institute of Tropical Forest, CAF, Guangzhou 510520, China; 2. Guangzhou Forestry Bureau, Guangzhou 510030, China; 3. Reclamation Company of Nansha district in Guangzhou, Guangzhou 511464, China
In this paper,the community structure and physical and chemical properties of soil are surveyed and analyzed for their ecological effects in three mixed artificial mangroves planted in 2001 in Nansha district Guangzhou.The results show that: Rhizophora stylosa is a shade-intolerant species and its allelopathic effects may exist in site 3,so the forest can't change into multistratal forest.Sonneratia apetala+Kandelia candel community and Sonneratia apetala+Bruguiera gymnorrhiza community are superior to the Sonneratia apetala+Rhizophora stylosa community for the former's community structure and effect of absorbing heavy metal are better than the latter's.Therefore,mangrove Sonneratia apetala mixed with Kandelia candel and Bruguiera gymnorrhiza can be adopted in the site of this experiment,while the scheme of Sonneratia apetala mixed with Rhizophora stylosa is not advocated.With the succession,the plots will be close to natural mangrove ecosystems in the absence of major disruptions.
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