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Ecological service function refers to the conditions and benefits of the natural environment, ecosystems and ecological processes to form and maintain human survival. Mangroves are woody plant communities grow in tropical and subtropical coastal intertidal zone revetment in the wind, siltation beach protection, material production, air conditioning, cleaning up the environment, biological control has played an important ecological service function. In this paper, the Zhuhai Qiao Island, mangrove communities for research object, release air ions, absorb heavy metals and biological control of three ecological service function. For the construction of a strong ecological function of mangroves for reference. Research draw the following conclusions: (1) apetala (Sonnerati aapetala Buch.-Ham.) The community aeroanion concentration daytime changes showed \Kandelia candel (L.) Druce) and Pongamia (Pongamia pinnata (Linn.) Pierre) Diurnal changes of negative air ion concentration within the community showed similar bimodal curve variation, the highest peak in the 10:00 , the peak-to-valley appeared at about 14:00, 16:00 aeroanion began to rise again to a second peak. Zhuhai Qiao Island, mangrove communities aeroanion seasonal changes characteristic for the summer and autumn than in winter and spring, and the highest in summer and lowest in spring. The S. apetala, candel, the Pongamia pinnata community aeroanion of annual average concentrations were 1249 · cm-3, 1621 Ge · cm-3, 1379 · cm-3, candel community release aeroanion ability to be better than The Pongamia apetala community. Spring, summer, autumn and winter season, the air quality level of the protected areas are Class A or Class B, showed excellent air quality. Zhuhai Qiao Island, the mangrove community aeroanion concentration and relative humidity was significantly positively correlated with temperature showed a certain degree of negative correlation, negative air ion concentration increases with increasing relative humidity decreased with increasing temperature . (2) three mangrove plant absorption of Cu, Hg, As, Pb, Cd elements, mainly stored in the roots, trunk and branches not easy to direct grazing animal, thereby reducing the possibility of heavy metals to the secondary consumers sex. Five Heavy elements in the highest concentrations of fine roots, and the roots of these five heavy metals content of the basic law of the fine roots gt; root gt; big root. Different plants accumulated amount of Cu, Hg, As, Pb, Cd elements, apetala Cu, As, candel Pongamia Pb, Cd, Cu accumulation in Three mangrove species in different parts of different plant species, plants and soil Cu, Hg, As, Pb, Cd element enrichment capacity, different. No the enrichment factor apetala largest candel followed Pongamia minimum, at the same time, the roots of the enrichment factor is greater than the trunk, branches and leaves. (3) three different forest age without flap Haisang Lin Mutual spend Spartina height were 183.51cm, 69.22cm, 47.50cm, 3-year-old and 5-year-old undergrowth height only to 37.72% of the annual height and 25.88%, its density of 161 m-2, m-75 strains of 45 strains · m-2. When apetala after three years of growth, its understory density of Spartina alterniflora accounted for only 46.48% of the control. With apetala old growing community coverage gradually enhanced its understory Spartina cordgrass frequency coverage and abundance declining, especially when the growth of apetala to three years after , the effect is quite obvious, its frequency, coverage, respectively, account for only 44% of the annual 55%, degrees get significant control. The no flap Haisang Lin Spartina alterniflora effectively control most of the local mangrove plant Acanthus replace. Spartina alterniflora Haisang Lin froze to death began to invade its woodland density, plant height, multi-degree have reached a high level, but was spread.
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