六种红树植物群落的三项生态服务功能

Study on three of the function of ecological services of six mangrove communities

通过研究三种真红树群落和三种半红树群落在吸收二氧化碳、吸收重金属以及净化空气三项生态服务功能，结果表明：无瓣海桑（Sonneratia apetala Buch．-Ham．）、海桑[Sonneratia caseolaris（L．）Engl．]和水黄皮[Pongamia pinnata（Linn．）Pierre]在光合作用方面要优于其他三个树种：重金属吸收方面水黄皮具有很强的吸收重金属Cd的能力，同时该6种红树植物均有很强的吸收Cr的能力，在净化空气的生态服务功能方面杨叶肖槿和水黄皮较其它红树植物要好。通过主成分分析对六种红树植物的生态服务功能进行综合评价表明：水黄皮、杨叶肖槿和无瓣海桑三种红树植物的生态服务功能较之其他三种要好。

The function of ecological services in absorbing carbon dioxide, concentrating heavy metal and purifying air of three mangrove communities and three associate mangrove communities was studied. The results show that Sonneratia apetala Buch.-Ham, Sonneratia caseolaris （L.） Engl. and Pongamia pinnata （Linn.） Pierre are better than other three species in photosynthesis. Pongamia pinnata （Linn.） Pierre has strong capability in absorbing the heavy metal Cd. Meanwhile, all of them have strong capability in concentrating Cr. Thespesia populnea （L.） Soland. Ex Corr. and Pongamia pinnata （Linn.） Pierre are better than other three species in air-purification. The service function of six mangrove communities is analyzed through the synthetical evaluation of principal component analysis, and the results show that the function of Pongamia pinnata （[,inn.） Pierre., Thespesia populnea （L.） Soland. Ex Corr. and Sonneratia apetala Buch.-Ham is better than others.