红树林湿地沉积物中重金属元素含量及其存在形态研究进展

Research Progress of Content and Speciation of Heavy Metals Element in Sediment of Mangrove Wetlands

红树林湿地,由于其固有的特性和处于特殊的地理环境,成为重金属污染的源和汇,红树林湿地沉积物重金属污染问题引起了国内外学者的极大关注,并对其地球化学特征进行了大量研究.在通过对红树林湿地沉积物重金属元素含量、分布特征、赋存形态及污染评价方面研究进展和存在问题进行综述的基础上,认为对红树林湿地沉积物中重金属元素地球化学的研究应加强多学科的综合研究,重视对红树林沉积物重金属元素在柱状样中的垂直分布的研究,加强对红树林湿地沉积物中重金属元素生物有效性分析等,以便为探讨红树林湿地的可持续发展以及污染红树林的生态恢复提供依据.

Mangrove wetlands, due to their attributes and special geographical environment, has become the sources of heavy metal pollution.In recent years, heavy metal pollution in sediment of mangrove wetlands has aroused great concern and a great number of researches on element geochemistry feature have been conducted.This paper here reviews the progress and some issues relating to content, distribution, speciation and pollution assessment of heavy metals in mangrove wetlands sediment.It is concluded as follows：First, the multidisciplinary comprehensive research on element geochemistry of heavy metals in sediment of mangrove wetlands should be strengthened and much more concern for their vertical distribution of cores should be paid; Second, the analysis of bioavailability of heavy metals in sediment of mangrove wetlands should be strengthened,which will provide a basis for the sustainable development and restoration of the mangrove wetlands.