红树林湿地系统污染生态及其净化效果的研究概况

红树林湿地系统处于淡水和海水的交互地带,具有净化水体的功能。随着大量污水、废物源源不断地排放入海,红树林湿地的水体净化功能正日益受到重视。综合国内外学者的相关研究成果,对红树林湿地系统的污染生态及其净化效果方面的研究概况进行了综述。目前,红树林湿地系统污染生态的研究主要集中在不同污染物的排放对红树林及生态环境的影响上,包括对红树植物的生长和生理生态的影响,污染物在红树植物中的累积以及污染物对红树林区沉积物、藻类、底栖动物的影响等方面上。研究结果表明,红树林对重金属、石油及污水等污染物有较强的耐性,且红树林植物和林下的土壤都有吸收多种污染物的能力,对污染物有较强的净化效果。红树林湿地系统的研究还有待于进一步深入,红树林湿地资源处于濒危状态,需加强管理和保护,所有的实验项目应在非保护区中进行。

Advances on Pollution Ecology and Purification Effect of Mangrove Wetland System

Mangrove wetland system lies in the intertidal zone. With a great deal of sewage and garbage being increasingly drained into the sea, great attentions have been paid to the effect of mangrove wetland system on water purification. Recent studies of system of mangrove wetland from home and abroad were summarized, which focused on the pollution ecology and removal effect of mangrove wetland system. So far the reported studies on pollution ecology were mainly concentrated on the influences of various pollutants on the mangrove and the mangrove entironment, including the influences on the growth and eco-physiological of mangrove plant , the accumulation of pollutants in the mangrove plants and influences on mangrove sediment, algae , benthic fauna and so on. The results showed that mangrove had high tolerance to heavy metals, oil and wastewater. Additionally, mangrove and the soil under it had the capability of assimilating and even purifying all sorts of pollutants, and mangrove wetland system possessed certain purification effect to pollutants. However, in order to provide much more valuable scientific foundation for the protection and utilization of precious mangrove , further researches on the mangrove wetland system are expected . Meanwhile ,due to the endangered resource of mangrove wetland system ,all experiments should be implemented in non-reserve zone so as to realize the effective management and safeguarding .