title: Trophic states of creeks and their relationship to changes in water level in Xixi National Wetland Park, China.
abstract: Urban wetland parks are a new type of urban park that have developed rapidly in recent years and have caught the attention of multiple governmental departments. The objective of this paper was to describe the trophic states of creeks and their relationship to water levels in an urban wetland park in Xixi, China. The study was based on temporal and spatial data collected monthly between March 2009 and March 2010. The results indicated that: (1) water quality significantly changed from upstream to downstream in study creeks. From upstream to downstream, water quality of creeks I and III improved; however, the water quality of creek IV and V declined; (2) trophic states in Xixi creeks differed according to seasons. Overall, the nutrition in creeks was measured at the slight eutrophication level. Nutrition was highest in summer and lowest in winter; (3) the relationship between water quality and water level differed dramatically between creeks. Water quality and water level in creek I was significantly negatively correlated, while no obvious trends were observed in other creeks. In order to improve water quality in creeks, the valid technique is to strengthen the management of inflowing water quality and then control water levels.
authors.affiliation: Jiangsu Key Laboratory of Environmental Change and Ecological Construction, College of Geographical Science, Nanjing Normal University, 1 Wenyuan Road, Nanjing, 210046, Jiangsu, China. pandalee_0826@163.com
authors.forename: Yufeng
authors.initials: Y
authors.lastname: Li
authors.forename: Hongyu
authors.initials: H
authors.lastname: Liu
authors.forename: Jingfeng
authors.initials: J
authors.lastname: Hao
authors.forename: Nan
authors.initials: N
authors.lastname: Zheng
authors.forename: Xiao
authors.initials: X
authors.lastname: Cao
mesh_terms: D002681:China; D004784:Environmental Monitoring; D005068:Eutrophication; D005618:Fresh Water / Q000032:analysis*; D060587:Groundwater; D053833:Wetlands