长江中下游不同营养水平湖泊水体环境变化特征及机制

曾海鳌; 吴敬禄

长江中下游不同营养水平湖泊水体环境变化特征及机制

曾海鳌^1,2,
吴敬禄¹

1.
中国科学院南京地理与湖泊研究所, 江苏, 南京, 210008;
2.
中国科学院研究生院, 北京, 100039

基金项目: 国家自然科学基金资助项目(40673015);中国科学院知识创新工程资助项目(KZCX2-YW-319)

详细信息

作者简介:
曾海鳌(1980- ),男,重庆万州人,博士研究生,主要从事环境地球化学研究.E-mail:zenghaiao@niglas.ac.cn

中图分类号: P343.3

Characteristics and mechanismes of water environmental changes in the lakes along the middle and lower reaches of Yangtze River

ZENG Hai-ao^1,2,
WU Jing-lu¹

1.
Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China;
2.
Graduate School of Chinese Academy of Sciences, Beijing 100039, China

Funds: The study is financially supported by the National Natural Science Foundation of China(No.40673015)and the Key Innovation Project of Chinese Academy of Science(KZCX2-YW-319).

摘要: 选择长江中下游49个湖泊进行不同季节的水体溶解无机氮(DIN)、总氮(TN)、总磷(TP),溶解性无机磷(DIP)以及叶绿素a(Chla)等环境参数分析,开展不同营养水平湖泊水体环境变化特征及生物响应机制研究。结果表明:DIN、TN/TP随TP的变化规律反映了不同营养水平和季节下地球化学作用的影响;氨氮(NH₄-N)、TP、DIP、Chla尤其是NH₄-N的季节性变化规律与营养水平关系密切;TP<0.05 mg/L时,NH₄-N随总磷升高的趋势夏季大于其他季节,TN/TP与硝态氮(NO₃-N)、TN相关性好,营养源组成和氨化作用是主要影响因素;0.05 mg/L4-N随总磷升高的趋势基本相同,TN/TP与亚硝态氮(NO₂-N)、NO₃-N、TN相关好,水生植物利用、氨化和反硝化作用是主要影响因素。TP>0.1 mg/L,冬季NH₄-N随总磷升高的趋势明显大于其他季节,TN/TP在冬季和春季与TN、NO₃-N相关性好,夏季和秋季与TP相关性好,其主要原因在于夏季和秋季水生植物对DIN的利用量、反硝化作用和湖泊内源释放的显著增强。
- 硝态氮 /
- 亚硝态氮 /
- 长江中下游湖泊
Abstract: In this paper,forty nine lakes along the middle and lower reaches of Yangtze River are chosen. Based on the analysis of the seasonal changes of environmental parameters,including dissolved inorganic nitrogen(DIN),total nitrogen(TN), total phosphorus(TP),dissolved inorganic phosphorus(DIP)and chlorophyⅡ a(Chla),etc,the characteristics of water environmental change and the mechanisms of biological response in lakes of different nutrient levels are studied.The results show that the impacts of geochemical processes are reflected by the variational laws of lakes in dif erent nutrient levels.The seasonal variations of Chla,ammonia nitrogen(NH₄-N),DIP,TP,and TN,especialy NH₄-N are closely related to nutrient levels. When TP<0.05 mg/L,because NH₄-N increases more quickly in winter than other seasons with TP increasing and TN/TP is closely related to nitrate-nitrogen(NO₃-N)and TN,the composition of nutrient sources and ammonification might be the main determinant. When 0.5 mg/L < TP<0.10 mg/L,NH₄-N increases equally in each season with TP increasing and TN/TP is closely related to NO₃-N,nitrite-nitrogen(NO₂-N)and TN,which suggests that the composition of nutrient sources,ammonification and denitrification might be the main determinant. When TP>0.1 mg/L,NH₄-N increases more quickly in winter than other seasons with TP increasing and TN/TP are closely related to TN and NO₃-N in spring and winter,but to TP in summer and autumn.The main reasons are that the effects of hydrophyte and denitrification and the internal release of phosphorus from sediment increase significantly.
- nitrate-nitrogen /
- nitrite-nitrogen /
- lakes along the middle and lower reaches of Yangtze River

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长江中下游不同营养水平湖泊水体环境变化特征及机制

作者简介:
曾海鳌(1980- ),男,重庆万州人,博士研究生,主要从事环境地球化学研究.E-mail:zenghaiao@niglas.ac.cn

Characteristics and mechanismes of water environmental changes in the lakes along the middle and lower reaches of Yangtze River

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长江中下游不同营养水平湖泊水体环境变化特征及机制

1. 中国科学院南京地理与湖泊研究所, 江苏, 南京, 210008;

2. 中国科学院研究生院, 北京, 100039

作者简介:
曾海鳌(1980- ),男,重庆万州人,博士研究生,主要从事环境地球化学研究.E-mail:zenghaiao@niglas.ac.cn

English Abstract

Characteristics and mechanismes of water environmental changes in the lakes along the middle and lower reaches of Yangtze River

1. Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China;

2. Graduate School of Chinese Academy of Sciences, Beijing 100039, China

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长江中下游不同营养水平湖泊水体环境变化特征及机制

作者简介: 曾海鳌(1980- ),男,重庆万州人,博士研究生,主要从事环境地球化学研究.E-mail:zenghaiao@niglas.ac.cn

Characteristics and mechanismes of water environmental changes in the lakes along the middle and lower reaches of Yangtze River

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长江中下游不同营养水平湖泊水体环境变化特征及机制

1. 中国科学院南京地理与湖泊研究所, 江苏, 南京, 210008; 2. 中国科学院研究生院, 北京, 100039

作者简介: 曾海鳌(1980- ),男,重庆万州人,博士研究生,主要从事环境地球化学研究.E-mail:zenghaiao@niglas.ac.cn

English Abstract

Characteristics and mechanismes of water environmental changes in the lakes along the middle and lower reaches of Yangtze River

1. Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China; 2. Graduate School of Chinese Academy of Sciences, Beijing 100039, China

全文HTML

目录

作者简介:
曾海鳌(1980- ),男,重庆万州人,博士研究生,主要从事环境地球化学研究.E-mail:zenghaiao@niglas.ac.cn

1. 中国科学院南京地理与湖泊研究所, 江苏, 南京, 210008;

2. 中国科学院研究生院, 北京, 100039

作者简介:
曾海鳌(1980- ),男,重庆万州人,博士研究生,主要从事环境地球化学研究.E-mail:zenghaiao@niglas.ac.cn

1. Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China;

2. Graduate School of Chinese Academy of Sciences, Beijing 100039, China