小三江平原湿地水质空间分异与影响分析  

Spatial characteristics of wetland water quality and land use impacts at spring in the small Sanjiang Plain, China

作　　者：刘红玉[1] 李兆富[2] 

机构地区：[1]南京师范大学地理科学学院,江苏南京210097 [2]南京农业大学资源与环境科学学院,江苏南京210095

出　　处：《中国环境科学》2008年第10期933-937,共5页China Environmental Science

基　　金：高等学校博士学科点专项科研基金(20070319001);国家自然科学基金资助项目(40471003)

摘　　要：2005年春季分3次对小三江平原湿地进行大空间尺度野外采样,获取区域内不同地理位置、多种湿地类型的水样水质数据.结合区域特点,利用有机物综合污染指数和富营养化综合指数,对25个采样点水质进行综合评价.结果表明,湿地水质主要受有机污染和富营养化威胁;河流及其两岸湿地污染水平较低,农田中的湿地受污染较为严重;湿地污染水平与其面积大小和周围土地利用结构关系密切.河岸大面积连续分布的湿地对维持河流良好水质更为重要.The 25 samples of water quality in wetlands were surveyed at spring in 2005 in the small Sanjiang Plain. With application of organic pollution index and entrophication index, wetland water quality were assessed for the study area. Wetland water quality were mainly threatened by organic pollutants and eutrophication pollutants. Rivers and riparian wetlands had lower ＇level pollution, and wetlands surrounded by agriculture land use suffered higher level pollution. Wetland size and surrounding land use had significant impacts on water quality of wetlands. Large areas of riparian wetlands played important roles in maintaining better water quality of rivers in the small Sanjiang Plain, China.

关 键 词：湿地 水质 春季 土地利用 三江平原 

分 类 号：X144[环境科学与工程—环境科学]