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引用本文:余功友,杨常亮,刘楷,杨海燕,张佳丽.云南阳宗海大气氮、磷沉降特征.湖泊科学,2017,29(5):1134-1142. DOI:10.18307/2017.0511
YU Gongyou,YANG Changliang,LIU Kai,YANG Haiyan,ZHANG Jiali.Atmospheric deposition of nitrogen and phosphorous in Lake Yangzonghai,Yunnan Prov-ince. J. Lake Sci.2017,29(5):1134-1142. DOI:10.18307/2017.0511
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云南阳宗海大气氮、磷沉降特征
余功友1, 杨常亮2, 刘楷3, 杨海燕4, 张佳丽4
1.云南大学建筑与规划学院, 昆明 650091;2.云南大学生态学与环境学院, 昆明 650091;3.云南平正环保科技有限公司, 昆明 650221;4.云南大学国际河流与生态安全研究院, 昆明 650091
摘要:
大气氮、磷沉降是湖泊水体氮、磷入湖的重要途径之一.为了解阳宗海氮、磷沉降对湖泊富营养化的潜在影响,于2012年5月-2014年4月通过监测阳宗海大气氮、磷沉降,估算氮、磷的大气沉降通量,揭示阳宗海大气氮、磷沉降随时间变化的特征,分析其来源、影响因素等.由于阳宗海是磷限制湖泊,本研究在估算大气氮、磷沉降通量的基础上,特别比较了大气磷沉降入湖量与非点源磷的入湖量,以此评估大气沉降输入磷对湖泊富营养化的潜在影响.研究结果表明:阳宗海总氮年平均沉降通量为248 mg/m2,春、夏、秋和冬季平均分别为200、306、274和214 mg/m2,其中夏季沉降通量最大,原因与降雨量增加有关;总磷年平均沉降通量为24 mg/m2,春、夏、秋和冬季平均分别为18、31、19和27 mg/m2.大气磷沉降与输入阳宗海的总磷量相比很小,对阳宗海富营养化影响较小.
关键词:  大气沉降      阳宗海
DOI:10.18307/2017.0511
分类号:
基金项目:国家自然科学基金项目(51168047)资助.
Atmospheric deposition of nitrogen and phosphorous in Lake Yangzonghai,Yunnan Prov-ince
YU Gongyou1, YANG Changliang2, LIU Kai3, YANG Haiyan4, ZHANG Jiali4
1.School of Architecture and Planning, Yunnan University, Kunming 650091, P. R. China;2.School of Ecology and Environmental Science, Yunnan University, Kunming 650091, P. R. China;3.Yunnan Pingzheng Environmental Technology Co. Ltd., Kunming 650221, P. R. China;4.Institute of International Rivers and Eco-security, Yunnan University, Kunming 650091, P. R. China
Abstract:
Atmospheric deposition is one of the important pathways for nitrogen (N) and phosphorus (P) transported into lakes.To understand the potential impact of N and P from atmospheric depositions on the eutrophication of Lake Yangzonghai,this re-search investigated the temporal variation and estimated the fluxes of N and P from atmospheric depositions in the lake catchment.The sources and impact factors of the N and P depositions were analyzed by monitoring data from May 2012 to April 2014.Since Lake Yangzonghai is a P-limited lake,this study especially compared the P fluxes from N and P atmospheric deposition with that from non-point sources,and assessed the potential P-impact from atmospheric deposition on the eutrophication lake.The results showed that the average annual deposition flux of total nitrogen was 248 mg/m2,and seasonal deposition fluxes in spring,summer,autumn and winter were 200,306,274 and 214 mg/m2,respectively.The peak of N flux occurred in summer because of the in-creased rainfall.The annual average P deposition flux was 24 mg/m2,and seasonal deposition fluxes in spring,summer,autumn and winter were 18,31,19 and 27 mg/m2,respectively.Compared with the non-point P-load source,P-input from atmospheric deposition seemed very small,and would have little effect on the eutrophication of the lake.
Key words:  Atmospheric deposition  nitrogen  phosphorus  Lake Yangzonghai
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