Effects of Nitrogen Addition on Plant Functional Traits in Freshwater Wetland of Sanjiang Plain, Northeast China

MAO Rong; ZHANG Xinhou; SONG Changchun

doi:10.1007/s11769-014-0691-4

Effects of Nitrogen Addition on Plant Functional Traits in Freshwater Wetland of Sanjiang Plain, Northeast China

doi: 10.1007/s11769-014-0691-4

1.
Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China;
2.
Key Laboratory of Marine Hydrocarbon Resources and Environmental Geology, Ministry of Land and Resources of China, Qingdao 266071, China

基金项目: Under the auspices of Strategic Priority Research Program-Climate Change: Carbon Budget and Related Issues of Chinese Academy of Sciences (No. XDA05050508), Ministry of Land and Resources Program (No. 201111023, GZH201100203) Key Laboratory of Marine Hydrocarbon Resources and Environmental Geology, Ministry of Land and Resources (No. MRE201101)

详细信息

通讯作者:
MAO Rong. E-mail: maorong@neigae.ac.cn

Effects of Nitrogen Addition on Plant Functional Traits in Freshwater Wetland of Sanjiang Plain, Northeast China

1.
Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China;
2.
Key Laboratory of Marine Hydrocarbon Resources and Environmental Geology, Ministry of Land and Resources of China, Qingdao 266071, China

Funds: Under the auspices of Strategic Priority Research Program-Climate Change: Carbon Budget and Related Issues of Chinese Academy of Sciences (No. XDA05050508), Ministry of Land and Resources Program (No. 201111023, GZH201100203) Key Laboratory of Marine Hydrocarbon Resources and Environmental Geology, Ministry of Land and Resources (No. MRE201101)

More Information

Corresponding author: MAO Rong. E-mail: maorong@neigae.ac.cn

摘要: To clarify the responses of plant functional traits to nitrogen (N) enrichment, we investigated the whole-plant traits (plant height and aboveground biomass), leaf morphological (specific leaf area (SLA) and leaf dry mass content (LDMC)) and chemical traits (leaf N concentration (LNC) and leaf phosphorus (P) concentration (LPC)) of Deyeuxia angustifolia and Glyceria spiculosa following seven consecutive years of N addition at four rates (0 g N/(m²·yr), 6 g N/(m²·yr), 12 g N/(m²·yr) and 24 g N/(m²·yr)) in a freshwater marsh in the Sanjiang Plain, Northeast China. The results showed that, for both D. angustifolia and G. spiculosa, N addition generally increased plant height, leaf, stem and total aboveground biomass, but did not cause changes in SLA and LDMC. Moreover, increased N availability caused an increase in LNC, and did not affect LPC. Thus, N addition decreased leaf C:N ratio, but caused an increase in leaf N:P ratio, and did not affect leaf C:P ratio. Our results suggest that, in the mid-term, elevated N loading does not alter leaf morphological traits, but causes substantial changes in whole-plant traits and leaf chemical traits in temperate freshwater wetlands. These may help to better understand the effects of N enrichment on plant functional traits and thus ecosystem structure and functioning in freshwater wetlands.
- nitrogen addition /
- Deyeuxia angustifolia /
- Glyceria spiculosa /
- leaf chemical traits /
- leaf morphological traits /
- whole-plant traits /
- Sanjiang Plain
Abstract: To clarify the responses of plant functional traits to nitrogen (N) enrichment, we investigated the whole-plant traits (plant height and aboveground biomass), leaf morphological (specific leaf area (SLA) and leaf dry mass content (LDMC)) and chemical traits (leaf N concentration (LNC) and leaf phosphorus (P) concentration (LPC)) of Deyeuxia angustifolia and Glyceria spiculosa following seven consecutive years of N addition at four rates (0 g N/(m²·yr), 6 g N/(m²·yr), 12 g N/(m²·yr) and 24 g N/(m²·yr)) in a freshwater marsh in the Sanjiang Plain, Northeast China. The results showed that, for both D. angustifolia and G. spiculosa, N addition generally increased plant height, leaf, stem and total aboveground biomass, but did not cause changes in SLA and LDMC. Moreover, increased N availability caused an increase in LNC, and did not affect LPC. Thus, N addition decreased leaf C:N ratio, but caused an increase in leaf N:P ratio, and did not affect leaf C:P ratio. Our results suggest that, in the mid-term, elevated N loading does not alter leaf morphological traits, but causes substantial changes in whole-plant traits and leaf chemical traits in temperate freshwater wetlands. These may help to better understand the effects of N enrichment on plant functional traits and thus ecosystem structure and functioning in freshwater wetlands.
- nitrogen addition /
- Deyeuxia angustifolia /
- Glyceria spiculosa /
- leaf chemical traits /
- leaf morphological traits /
- whole-plant traits /
- Sanjiang Plain

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Effects of Nitrogen Addition on Plant Functional Traits in Freshwater Wetland of Sanjiang Plain, Northeast China

doi: 10.1007/s11769-014-0691-4

通讯作者:
MAO Rong. E-mail: maorong@neigae.ac.cn

Effects of Nitrogen Addition on Plant Functional Traits in Freshwater Wetland of Sanjiang Plain, Northeast China

Corresponding author: MAO Rong. E-mail: maorong@neigae.ac.cn

计量

Effects of Nitrogen Addition on Plant Functional Traits in Freshwater Wetland of Sanjiang Plain, Northeast China

doi: 10.1007/s11769-014-0691-4

1. Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China;

2. Key Laboratory of Marine Hydrocarbon Resources and Environmental Geology, Ministry of Land and Resources of China, Qingdao 266071, China

通讯作者: MAO Rong. E-mail: maorong@neigae.ac.cn

English Abstract

Effects of Nitrogen Addition on Plant Functional Traits in Freshwater Wetland of Sanjiang Plain, Northeast China

1. Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China;

2. Key Laboratory of Marine Hydrocarbon Resources and Environmental Geology, Ministry of Land and Resources of China, Qingdao 266071, China

Corresponding author: MAO Rong. E-mail: maorong@neigae.ac.cn

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Effects of Nitrogen Addition on Plant Functional Traits in Freshwater Wetland of Sanjiang Plain, Northeast China

doi: 10.1007/s11769-014-0691-4

通讯作者: MAO Rong. E-mail: maorong@neigae.ac.cn

Effects of Nitrogen Addition on Plant Functional Traits in Freshwater Wetland of Sanjiang Plain, Northeast China

Corresponding author: MAO Rong. E-mail: maorong@neigae.ac.cn

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Effects of Nitrogen Addition on Plant Functional Traits in Freshwater Wetland of Sanjiang Plain, Northeast China

doi: 10.1007/s11769-014-0691-4

1. Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China; 2. Key Laboratory of Marine Hydrocarbon Resources and Environmental Geology, Ministry of Land and Resources of China, Qingdao 266071, China

通讯作者: MAO Rong. E-mail: maorong@neigae.ac.cn

English Abstract

Effects of Nitrogen Addition on Plant Functional Traits in Freshwater Wetland of Sanjiang Plain, Northeast China

1. Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China; 2. Key Laboratory of Marine Hydrocarbon Resources and Environmental Geology, Ministry of Land and Resources of China, Qingdao 266071, China

Corresponding author: MAO Rong. E-mail: maorong@neigae.ac.cn

全文HTML

目录

通讯作者:
MAO Rong. E-mail: maorong@neigae.ac.cn

1. Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China;

2. Key Laboratory of Marine Hydrocarbon Resources and Environmental Geology, Ministry of Land and Resources of China, Qingdao 266071, China

1. Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China;

2. Key Laboratory of Marine Hydrocarbon Resources and Environmental Geology, Ministry of Land and Resources of China, Qingdao 266071, China