中文摘要：

对南京市东郊的17个城市湿地进行水质监测和植物群落调查,从生态系统、集水区和景观功能区3个尺度揭示城市湿地水质的分异特征.结果表明：湿地类型和植物群落特征是生态系统尺度上影响湿地水质的主要因素;原生湿地的水质普遍优于改造湿地,而改造湿地的水质则普遍优于次生湿地;湿地植物的盖度越大,水质越好.土地利用类型是集水区尺度上影响湿地水质空间分异的主要因素,建设用地对流域湿地营养盐影响程度较大,而林地对溶解氧影响程度较大.人类活动是功能区尺度上影响湿地水质空间分异的主要因素,而其对不同水质指标的影响程度不同.

英文摘要：

An investigation was made on the water quality and plant community in 17 urban wetlands in east suburb of Nanjing City,and the spatial heterogeneity of the water quality was analyzed at ecosystem scale,catchment scale,and functional landscape scale.Wetland type and the characteristics of plant community were the main factors affecting the water quality at ecosystem scale.Primitive wetland had the best water quality,followed by reconstructed wetland,and secondary wetland.The higher plant coverage the wetland had,the better the water quality was.Land use type was the main factor affecting the water quality at catchment scale.Constructive land had greater effects on water nutrients content,while woodland mainly affected water dissolved oxygen.Human activity was the main factor affecting the water quality at functional landscape scale,and the effects differed with different water quality indices.