底泥微生物在红树林生态系统中的作用

微生物-营养物质-植物之间的紧密联系是红树林生态系统中营养物质保存和循环的主要机制之一。具有高生产力和丰富多样性的底泥微生物，不断地将红树林凋落物转化成可被植物利用的氮、磷或其他营养物质。植物根系分泌物又为该系统中微生物和其他大型生物提供营养。文章综述了国内外有关红树林生态系统中微生物的营养物质转化方面的主要研究结果，并阐明了这些微生物对该系统生产力的重要贡献。为了更好地保护红树林生态系统，维持和恢复其微生物系统是必要的。

The Role of Sediment Microorganisms in the Mangrove Ecosystems

Evidences suppose that the close microbe-nutrient-plant relationship plays an important role in the mechanism of nutrients recycle and conserve in the mangrove ecosystem. The microbial community living in mangrove ecosystems transform the dead mangrove vegetation into nutrients of nitrogen, phosphorus, and others that can be utilized by the plants. In turn,the exudates from plant root serve as a food source for the microorganisms and other larger organisms. The current knowledge on microbial transformation of nutrients in mangrove ecosystem and the contribution of these microorganisms to the productivity of the ecosystem are summarized. To conserve the mangrove ecosystems, the microbial communities should be considered. Inoculation of mangrove seedlings with plant-growth-promoting bacteria may help to regenerate the destroyed mangrove areas and create artificial mangrove ecosystems.