Effects of Warming and Nitrogen Addition on Plant Photosynthate Partitioning in an Alpine Meadow on the Tibetan Plateau
文献类型：期刊论文
| 作者 | Zong, Ning1; Chai, Xi1,3; Shi, Pei-Li1,3 ; Yang, Xiao-Cheng2
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| 刊名 | JOURNAL OF PLANT GROWTH REGULATION
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| 出版日期 | 2018-09-01 |
| 卷号 | 37期号:3页码:803-812 |
| 关键词 | Allocation pattern Alpine meadow Nitrogen addition Newly fixed plant photosynthate Warming |
| ISSN号 | 0721-7595 |
| DOI | 10.1007/s00344-017-9775-6 |
| 通讯作者 | Shi, Pei-Li(shipl@igsnrr.ac.cn) ; Yang, Xiao-Cheng(yxc39@163.com) |
| 英文摘要 | Quantifying plant carbon (C) allocation among different pools is critical for understanding and predicting how C turnover responds to global climate change in terrestrial ecosystems. A field experiment with increasing warming and nitrogen (N) was established to investigate interactive effects on plant C allocation in alpine meadows. Open-top chambers (OTCs) were used to simulate warming. In OTCs, daytime air and soil temperature at 5 cm depth increased by 2.0 and 1.6 A degrees C, respectively, compared with ambient conditions, but soil moisture at 5 cm depth decreased by 4.95% (v/v) from 2012 to 2014. Warming reduced aboveground biomass by 38, 36, and 43% in 2012, 2013, and 2014, respectively, and increased belowground biomass by 64% and 29% in 2013 and 2014, respectively, and the root-to-shoot ratio was significantly increased. Specifically, warming increased the proportion of plant roots in the deep layers (10-20 cm). Both N addition and its combination with warming substantially enhanced belowground biomass. Pulse-labeling experiments for C-13 revealed that warming reduced the translocation of assimilated C to shoots by 8.8% (38.7% in warming, and 47.5% in the control [CK]), and increased the allocation to root by 12.2% (55.5% in warming, and 43.3% in CK) after 28 days labeling. However, N addition increased the proportion of assimilated C allocated to shoots by 6.5% (54.0% in N addition, and 47.5% in CK), whereas warming combined with N addition reduced this proportion by 10.9%. A decline in soil water content in the surface layer may be the main cause of plants allocating more newly fixed photosynthate to roots. Therefore, plants promoted root growth to draw water from deeper soil layers (10-20 cm). We concluded that climate warming will change the allocation patterns of plant photosynthates by affecting soil water availability, whereas N addition will increase plant photosynthates aboveground in alpine meadows and thus will significantly affect C turnover under future climate change scenarios. |
| WOS关键词 | CARBON ALLOCATION ; BIOMASS ALLOCATION ; SOIL-TEMPERATURE ; CRITICAL LOADS ; GROWING-SEASON ; CO2 EXCHANGE ; GROWTH ; ECOSYSTEM ; VEGETATION ; SHOOT |
| 资助项目 | West Light Foundation of the Chinese Academy of Sciences ; National Science Foundation for Young Scientists of China[41703079] ; National Key Research and Development Program[2016YFC0501803] ; National Natural Science Foundation of China[31470506] ; Youth Innovation Research Team Project[LENOM2016Q0004] |
| WOS研究方向 | Plant Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000439443100009 |
| 出版者 | SPRINGER |
| 资助机构 | West Light Foundation of the Chinese Academy of Sciences ; National Science Foundation for Young Scientists of China ; National Key Research and Development Program ; National Natural Science Foundation of China ; Youth Innovation Research Team Project |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/129943]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Shi, Pei-Li; Yang, Xiao-Cheng |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modelling, Lhasa Natl Ecol Res Stn, 11A Datun Rd, Beijing 100101, Peoples R China 2.Chengdu Univ Technol, Coll Mat & Chem & Chem Engn, 1 Dongsanlu, Chengdu 610059, Sichuan, Peoples R China 3.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zong, Ning,Chai, Xi,Shi, Pei-Li,et al. Effects of Warming and Nitrogen Addition on Plant Photosynthate Partitioning in an Alpine Meadow on the Tibetan Plateau[J]. JOURNAL OF PLANT GROWTH REGULATION,2018,37(3):803-812. |
| APA | Zong, Ning,Chai, Xi,Shi, Pei-Li,&Yang, Xiao-Cheng.(2018).Effects of Warming and Nitrogen Addition on Plant Photosynthate Partitioning in an Alpine Meadow on the Tibetan Plateau.JOURNAL OF PLANT GROWTH REGULATION,37(3),803-812. |
| MLA | Zong, Ning,et al."Effects of Warming and Nitrogen Addition on Plant Photosynthate Partitioning in an Alpine Meadow on the Tibetan Plateau".JOURNAL OF PLANT GROWTH REGULATION 37.3(2018):803-812. |
入库方式： OAI收割
来源：地理科学与资源研究所
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