文献类型：期刊文献

中文题名：化工废水对红树林湿地的影响

英文题名：Effects of Chemical Industrial Wastewater on Mangrove Wetlands

作者：李玫[1] 章金鸿[2] 陈桂珠[3]

第一作者：李玫

机构：[1]中国林科院热带林业研究所;[2]广州市环境保护研究所;[3]中山大学环境科学研究所

年份：2003

卷号：25

期号：6

起止页码：21-24

中文期刊名：重庆环境科学

外文期刊名：Chongqing Environmental Science

收录：北大核心:【北大核心2000】；

基金：国家自然科学基金资助项目 (39470 1 51 )

语种：中文

中文关键词：化工废水;红树林湿地;影响

外文关键词：chemical wastewater;mangrove wetland;effects

分类号：X171.5

摘要：采用野外调查和采样分析的方法 ,研究了化工废水排放对红树林湿地中植物、水体和土壤的影响。结果表明 :1)化工废水的流入加重了近排污口红树林湿地的水体有机污染 ,由于水体自净和红树林湿地净化作用 ,远排污口红树林湿地的水体有机污染则明显减轻 ;化工废水中的重金属大多沉积于排污口附近底泥中 ,流经红树林湿地时水体中重金属含量已大大降低 ;2 )化工废水没有改变红树林土壤的质地 ,但降低了其 p H值 ;红树林土壤对化工废水中的重金属吸附积累能力较强 ,可作为重金属的沉积地 ;3)化工废水的排放对红树林植物的生长造成了不良影响 ;红树林植物可吸收化工废水中的营养元素而为自身利用 ,重金属元素被红树林植物吸收后大多积累在根部 ;重金属从根部运送到茎、叶的迁移率大致为 Cu>Zn>Cd>Pb;4 )研究认为利用红树林湿地处理化工废水时应进行废水的预处理 。
Through field investigations and sample analysis,effects of chemical industrial wastewater on plants,water and soil in mangrove wetlands were studied in this paper.The results showed:1)An inflow of chemical industrial wastewater aggravated the water organic pollution in mangrove wetland near the outfall.While the water organic pollution in wetland far from the outfall was alleviated,because of water self purifcation and the purification effects of mangrove wetland;Heavy metals were mostly deposited in sediment under the outfall,so contents of heavy metals decreased in the mangrove wetlands;2)With an inflow of chemical wastewater,the soil character had no change but the pH value decreased;The mangrove soil could be used as a wastewater processing station for its strong capacity of absorbing and accumulating heavy metals;3)Chemical wastewater had an adverse effect on plant growth;nutrients from chemical wastewater could be absorbed and utilized by the mangrove plants;heavy metals were mostly accumulated in roots;the order of transport rates of heavy medals was Cu>Zn>Cd>Pb.4)To avoid the adverse effect on mangrove plants,pretreatment would be adopted before using mangrove wetlands to the chemical wastewater disposal.