| 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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| 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 氮 磷 阳宗海 |
| DOI：10.18307/2017.0511 |
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| 基金项目:国家自然科学基金项目（51168047）资助. |
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| Atmospheric deposition of nitrogen and phosphorous in Lake Yangzonghai,Yunnan Prov-ince |
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YU Gongyou1, YANG Changliang2, LIU Kai3, YANG Haiyan4, ZHANG Jiali4
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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
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| 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 |
