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塘-湿地系统中芦苇对再生水氮磷吸收能力研究
引用本文:宋佳宇,单保庆. 塘-湿地系统中芦苇对再生水氮磷吸收能力研究[J]. 环境科学与技术, 2012, 0(10): 16-19,33
作者姓名:宋佳宇  单保庆
作者单位:中国科学院生态环境研究中心环境水质学国家重点实验室
基金项目:国家水体污染控制与治理科技重大专项(2008ZX07209-010,2008ZX07209-006);生态校园水资源综合利用成套技术示范工程(08FDZDSF03200);典型区域村镇分散型污水处理技术集成研究与综合示范(2009BAC57B02)
摘    要:以天津市空港经济区塘-湿地组合处理系统为对象,研究了再生水补给条件下芦苇各组分氮(N)、磷(P)的吸收能力。研究发现:在一个生长周期内,芦苇不同组分(穗、叶、茎、根)N、P的质量分数为(1.17±0.82)%和(0.067±0.057)%,存在穗>叶>根>茎的特点。芦苇各组分N、P的质量分数随生境类型而变化,其中N的质量分数范围介于0.22%~2.34%,P介于0.012%~0.23%。再生水补给条件下系统地上生物量为(119.37±62.25)kg/m2,明显高于周边河道自然生长的芦苇((19.08±5.73)kg/m2),表明再生水的补给能有效提高芦苇的初级生产力,且地上部分对N、P的累积能力高于地下部分,分别为4.10和5.20倍。

关 键 词:芦苇      塘-湿地组合处理系统  再生水

Nitrogen and Phosphorus Absorption Capacity of Phragmites australis in Constructed Pond-Wetland System for Reclaimed Water Treatment
SONG Jia-yu,SHAN Bao-qing. Nitrogen and Phosphorus Absorption Capacity of Phragmites australis in Constructed Pond-Wetland System for Reclaimed Water Treatment[J]. Environmental Science and Technology, 2012, 0(10): 16-19,33
Authors:SONG Jia-yu  SHAN Bao-qing
Affiliation:(State Key Laboratory of Environmental Aquatic Chemistry,Research Centre for Eco-environmental Science,Chinese Academy of Sciences,Beijing 100085,China)
Abstract:A typical area,Tianjin Airport Industrial Park with reclaimed water supplement for river system was selected as a case study to explore phosphorus and nitrogen absorptive capacity in different components of Phragmites australis in a constructed pond-wetland combination system during one growing season.Results showed that mass fractions for nitrogen and phosphorus in different tissues were(1.17±0.82)%,(0.067±0.057)% respectively,and it was the highest in panicles while the lowest in stems of Phragmites australis.Mass fraction of nitrogen and phosphorus varied significantly from habitats and ranged between 0.22% and 2.34%,while phosphorus ranged among 0.012% and 0.23%.Aboveground biomass(119.37±62.25) kg/m2 in constructed pond-wetland system was obviously higher than that in natural condition(19.08±5.73) kg/m2,and cumulative ability of Phragmites australis ground components to nitrogen and phosphorus was much higher(4.10 and 5.20 times respectively) than that of its underground components,which indicated the supply of reclaimed water might enhance the primary productivity of Phragmites australis.
Keywords:Phragmites australis  nitrogen  phosphorus  constructed pond-wetland system  reclaimed water
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