Precipitation variations, rather than N deposition, determine plant ecophysiological traits in a desert steppe in Northern China
文献类型：期刊论文
| 作者 | Ma, Quanhui4,5; Li, Yibo1; Zhu, Yu6; Liu, Xiaodi2,5; Yu, Hongying2,3,5; Li, Lang2,5; Qi, Miao2,5; Sun, Hongru2,5; Yin, Zuotian2,5; Wang, Yuhui5 |
| 刊名 | ECOLOGICAL INDICATORS
 |
| 出版日期 | 2022-08-01 |
| 卷号 | 141页码:11 |
| ISSN号 | 1470-160X |
| 关键词 | Climatechange Rainfall Nitrogenenrichment Drylands Plantfunctionaltraits |
| DOI | 10.1016/j.ecolind.2022.109144 |
| 通讯作者 | Zhou, Guangsheng(zhougs@cma.gov.cn) ; Xu, Zhenzhu(xuzz@ibcas.ac.cn) |
| 英文摘要 | Understanding how plant ecophysiological traits of coexisting species within a community respond to environ-mental changes could help to predict the shift in plant community structure and function, but it remains limited in the scenarios of co-occurring precipitation variations and N deposition. A two-year field experiment was conducted to explore the effects of large precipitation changes (reduced and increased precipitation amount by 25% and 50% relative to ambient control) and high N deposition (10 g N m(-2) yr(-1)) on a series of leaf ecophysiological traits of three dominant species (Stipa tianschanica, a C-3 grass; Cleistogenes squarrosa, a C4 grass; and Artemisia capillaris, a C-3 forb) in a desert steppe in Northern China. Increasing precipitation significantly linearly promoted the leaf light-saturated photosynthesis rate (Asat) and N use efficiency of the two C-3 species, irrespective of N addition. The rises in Asat of both C-3 species were mainly caused by increased soil moisture, which strongly induced increases in leaf stomatal conductance (gs) and declines in quantum yield of photosystem II (phi PSII). However, the Asat of the two C3 species was weakly correlated with their specific leaf area and leaf N concentration, whereas the Asat of the C4 grass was negatively related to its leaf N. Moreover, the Asat, height, and aboveground biomass of the forbs were much more water-sensitive than those of both grass species, with a consequence of the most dominant species turning from grass to forbs as precipitation increased. Our findings highlight that water limitation, rather than N deficit, is the largest factor controlling plant growth in drylands, and plant species-specific ecophysiological responses to precipitation fluctuations will cause a substantial shift in the production and composition of plant community. |
| WOS关键词 | GLOBAL RESPONSE PATTERNS ; NITROGEN LIMITATION ; C-4 GRASSES ; LEAF TRAITS ; WATER ; PHOTOSYNTHESIS ; PRODUCTIVITY ; DROUGHT ; CLIMATE ; ECOSYSTEMS |
| 资助项目 | Strategic Priority Research Program of Chinese Academy of Sciences[XDA26010103] ; National Natural Science Foundation of China[32101438] ; National Natural Science Foundation of China[41775108] ; National Natural Science Foundation of China[41975145] ; China Special Fund for Meteorological Research in the Public Interest (Major projects)[GYHY201506001-3] ; Science and Technology Project of the Jilin Provincial Education Department[JJKH20211300KJ] |
| WOS研究方向 | Biodiversity & Conservation ; Environmental Sciences & Ecology |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:000856279600003 |
| 资助机构 | Strategic Priority Research Program of Chinese Academy of Sciences ; National Natural Science Foundation of China ; China Special Fund for Meteorological Research in the Public Interest (Major projects) ; Science and Technology Project of the Jilin Provincial Education Department |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/184770]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Zhou, Guangsheng; Xu, Zhenzhu |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.China Meteorol Adm, Acad Meteorol Sci, Beijing 100081, Peoples R China 4.Northeast Normal Univ, Inst Grassland Sci, Key Lab Vegetat Ecol, Jilin Songnen Grassland Ecosyst Natl Observat & Re, Changchun 130024, Peoples R China 5.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 6.Chinese Acad Sci, Northeast Inst Geog & Agroecol, Key Lab Wetland Ecol & Environm, Heilongjiang Xingkai Lake Wetland Ecosyst Natl Obs, Changchun 130102, Jilin, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ma, Quanhui,Li, Yibo,Zhu, Yu,et al. Precipitation variations, rather than N deposition, determine plant ecophysiological traits in a desert steppe in Northern China[J]. ECOLOGICAL INDICATORS,2022,141:11. |
| APA | Ma, Quanhui.,Li, Yibo.,Zhu, Yu.,Liu, Xiaodi.,Yu, Hongying.,...&Xu, Zhenzhu.(2022).Precipitation variations, rather than N deposition, determine plant ecophysiological traits in a desert steppe in Northern China.ECOLOGICAL INDICATORS,141,11. |
| MLA | Ma, Quanhui,et al."Precipitation variations, rather than N deposition, determine plant ecophysiological traits in a desert steppe in Northern China".ECOLOGICAL INDICATORS 141(2022):11. |
入库方式： OAI收割
来源：地理科学与资源研究所
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