The interactive effects of nitrogen addition and increased precipitation on gross ecosystem productivity in an alpine meadow
文献类型：期刊论文
| 作者 | Shen, Ruo-Nan2,3; Zhang, Yang-Jian2; Zhu, Jun-Tao1,2; Chen, Ning4; Chen, Yao2,3; Zhao, Guang2; Zhu, Yi-Xuan2,3; Tang, Ze2,3; Li, Wen-Yu2,3 |
| 刊名 | JOURNAL OF PLANT ECOLOGY
 |
| 出版日期 | 2022-02-01 |
| 卷号 | 15期号:1页码:168-179 |
| 关键词 | ecosystem CO2 exchange water addition nitrogen addition plant functional groups alpine grassland |
| ISSN号 | 1752-9921 |
| DOI | 10.1093/jpe/rtab081 |
| 通讯作者 | Zhu, Jun-Tao(zhujt@igsnrr.ac.cn) |
| 英文摘要 | The ecological consequences of precipitation change and increased atmospheric nitrogen (N) deposition have profound impacts on ecosystem CO2 exchange in grassland ecosystems. Water and N can largely influence grassland productivity, community composition and ecosystem functions. However, the influences of water and N addition on the ecosystem CO2 exchange of alpine grassland ecosystems remain unclear. A field manipulative experiment with water and N additions was conducted in an alpine meadow on the Tibetan Plateau over 4 years with contrasting precipitation patterns. There were four treatments: control (Ctrl), N addition (N), water addition (W) and N and water addition (NW), each replicated three times. N addition, but not water addition, increased gross ecosystem productivity (GEP), plant biomass, community cover and community-weighted mean height. The responses of ecosystem CO2 exchange to water and N addition varied between the wet and dry years. Water addition had a positive effect on net ecosystem carbon exchange (NEE) due to a larger increase in GEP than in ecosystem respiration (ER) only in the dry year. On the contrary, N addition significantly enhanced ecosystem CO2 exchange only in the wet year. The increased GEP in N addition was attributed to the larger increase in NEE than ER. Moreover, N addition stimulated NEE mainly through increasing the cover of dominant species. Our observations highlight the important roles of precipitation and dominant species in regulating ecosystem CO2 exchange response to global environmental change in alpine grasslands. |
| WOS关键词 | SOIL RESPIRATION ; CARBON EXCHANGE ; SEMIARID GRASSLAND ; WATER AVAILABILITY ; TEMPORAL VARIATION ; MICROBIAL ACTIVITY ; NUTRIENT ADDITION ; USE-EFFICIENCY ; CO-LIMITATION ; PLANT |
| 资助项目 | Outstanding Youth Scientist Program of NSFC[41725003] ; National Key Research & Development Program of China[2016YFC0501802] ; National Natural Science Foundation of China[41991234] ; National Natural Science Foundation of China[42077422] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDA20050102] |
| WOS研究方向 | Plant Sciences ; Environmental Sciences & Ecology ; Forestry |
| 语种 | 英语 |
| WOS记录号 | WOS:000764264800003 |
| 出版者 | OXFORD UNIV PRESS |
| 资助机构 | Outstanding Youth Scientist Program of NSFC ; National Key Research & Development Program of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of Chinese Academy of Sciences |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/172457]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Zhu, Jun-Tao |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Lhasa Plateau Ecosyst Res Stn, Beijing 100101, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Northeast Inst Geog & Agroecol, Key Lab Wetland Ecol & Environm, Changchun 130102, Peoples R China |
| 推荐引用方式 GB/T 7714 | Shen, Ruo-Nan,Zhang, Yang-Jian,Zhu, Jun-Tao,et al. The interactive effects of nitrogen addition and increased precipitation on gross ecosystem productivity in an alpine meadow[J]. JOURNAL OF PLANT ECOLOGY,2022,15(1):168-179. |
| APA | Shen, Ruo-Nan.,Zhang, Yang-Jian.,Zhu, Jun-Tao.,Chen, Ning.,Chen, Yao.,...&Li, Wen-Yu.(2022).The interactive effects of nitrogen addition and increased precipitation on gross ecosystem productivity in an alpine meadow.JOURNAL OF PLANT ECOLOGY,15(1),168-179. |
| MLA | Shen, Ruo-Nan,et al."The interactive effects of nitrogen addition and increased precipitation on gross ecosystem productivity in an alpine meadow".JOURNAL OF PLANT ECOLOGY 15.1(2022):168-179. |
入库方式： OAI收割
来源：地理科学与资源研究所
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