| 鄱阳湖碟形湖泊植物分解和水位变化对水体碳、氮浓度的叠加效应 |
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| 引用本文： | 张广帅,于秀波,刘宇,张欢,张全军,李雅,段后浪.鄱阳湖碟形湖泊植物分解和水位变化对水体碳、氮浓度的叠加效应[J].湖泊科学,2018,30(3):668-679. |
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| 作者姓名： | 张广帅 于秀波 刘宇 张欢 张全军 李雅 段后浪 |
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| 作者单位： | 中国科学院地理科学与资源研究所中国科学院生态系统网络观测与模拟重点实验室;中国科学院大学;南昌大学生命科学学院 |
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| 基金项目： | 国家自然科学基金项目（41471088）和地方合作项目（鄱阳湖水生态综合模型研究及开发）联合资助. |
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| 摘 要： | 以鄱阳湖典型碟形湖泊——白沙湖为监测对象,开展水体有机碳(TOC)、总氮(TN)、铵态氮(NH_4~+-N)和硝态氮(NO_3~--N)浓度的年内动态变化的定位观测,结合在白沙湖开展的灰化薹草(Carex cinerascens)分解模拟实验和稳定同位素示踪技术,对薹草分解过程和水体营养盐浓度变化进行时间匹配,分析水体中颗粒态有机物(POM)的来源,并探讨水位变化和薹草分解对水体营养盐浓度的交互作用.结果表明,水体TOC、TN和NH_4~+-N浓度在枯水季1—4月明显高于其他月份;薹草在0~60 d具有最高的分解速率,鄱阳湖碟形湖泊洲滩湿地薹草分解起始时间为当年12月前后;水体POM与薹草活体和分解残体的δ~(13)C差异不显著,而与苦草和藻类具有显著性差异,说明薹草分解残体是水体中POM的主要来源;薹草分解过程明显影响湖泊水体TN、NH_4~+-N和TOC浓度变化;水位变化对湖泊水体NO_3~--N浓度变化效应最明显.
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| 关 键 词： | 分解 水位 水体营养盐 交互效应 稳定同位素 鄱阳湖 白沙湖 灰化薹草 |
| 收稿时间： | 2017/6/16 0:00:00 |
| 修稿时间： | 2017/8/18 0:00:00 |
Accumulation effect of litter decomposition and water level on carbon and nitrogen in shallow lake water of Lake Poyang |
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| ZHANG Guangshuai,YU Xiubo,LIU Yu,ZHANG Huan,ZHANG Quanjun,LI Ya and DUAN Houlang.Accumulation effect of litter decomposition and water level on carbon and nitrogen in shallow lake water of Lake Poyang[J].Journal of Lake Science,2018,30(3):668-679. |
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| Authors: | ZHANG Guangshuai YU Xiubo LIU Yu ZHANG Huan ZHANG Quanjun LI Ya and DUAN Houlang |
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| Institution: | Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, P. R. China;University of Chinese Academy of Sciences, Beijing 100049, P. R. China,Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, P. R. China;University of Chinese Academy of Sciences, Beijing 100049, P. R. China,Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, P. R. China,College of Life Science, Nanchang University, Nanchang 330031, P. R. China,Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, P. R. China;University of Chinese Academy of Sciences, Beijing 100049, P. R. China,Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, P. R. China;University of Chinese Academy of Sciences, Beijing 100049, P. R. China and Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, P. R. China;University of Chinese Academy of Sciences, Beijing 100049, P. R. China |
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| Abstract: | |
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| Keywords: | Decomposition water level water nutrients interaction stable isotope Lake Poyang Lake Baisha Carex cinerascens |
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