Increasing relative abundance of C4 plants mitigates a dryness-stress effect on gross primary productivity along an aridity gradient in grassland ecosystems
文献类型：期刊论文
| 作者 | Wang, Jing1,3; Wen, Xuefa1,2 |
| 刊名 | PLANT AND SOIL
 |
| 出版日期 | 2022-06-14 |
| 页码 | 17 |
| 关键词 | Dryness stress Soil moisture Vapor pressure deficit Stomatal conductance The ratio of intercellular to atmospheric CO2 partial pressure Gross primary productivity |
| ISSN号 | 0032-079X |
| DOI | 10.1007/s11104-022-05529-8 |
| 通讯作者 | Wang, Jing(wangjing.15b@igsnrr.ac.cn) ; Wen, Xuefa(wenxf@igsnrr.ac.cn) |
| 英文摘要 | Purpose Impacts of dryness stress (i.e., low soil moisture [SM] and high vapor pressure deficit [VPD]) on gross primary production (GPP) have received considerable attention in recent years, however, their biological mechanism still needs to be elucidated. Methods We decomposed GPP into canopy stomatal conductance (gs), ratio of intercellular to atmospheric CO2 partial pressure (Ci/Ca), and species composition and investigated the interaction of dryness stress, gs, Ci/Ca, and relative abundance of C4 plants (C4/(C3 + C4)) to determine how they regulate GPP along an aridity gradient in Inner Mongolia Plateau. We used biomass-weighted leaf carbon (delta C-13) and oxygen (delta O-18) isotopes to calculate canopy Ci/Ca and O-18 enrichment in leaf tissue above source water (o(18)O), respectively. Results A positive relationship between 1/o(18)O and canopy gs demonstrated that 1/o(18)O was a reliable indicator for canopy gs. Soil moisture (SM) exhibited a positive effect on 1/o(18)O and Ci/Ca, while Ci/Ca decreased and C4/(C3 + C4) increased with increasing water vapor pressure (VPD). 1/o(18)O and C4/(C3 + C4) indirectly regulated GPP via Ci/Ca, and the effect of C4/(C3 + C4) on the variability in Ci/Ca was stronger than that of 1/o(18)O. Interaction between dryness stressors (SM and VPD) and vegetation properties (1/o(18)O, Ci/Ca, and C4/(C3 + C4)) captured 74.6% of the variability in GPP, indicating that spatial variability in GPP was determined overwhelmingly by indirect effects of dryness on biological processes. Conclusions Increasing relative abundance of C4 plants would effectively mitigate the negative effects of dryness stress on GPP. |
| WOS关键词 | CARBON-ISOTOPE DISCRIMINATION ; WATER-USE EFFICIENCY ; OXYGEN ISOTOPES ; CLIMATE ; SOILS ; LEAF ; STRATEGIES ; PARAMETERS ; IMPACTS ; DROUGHT |
| 资助项目 | National Natural Science Foundation of China[41991234] ; National Natural Science Foundation of China[32001137] |
| WOS研究方向 | Agriculture ; Plant Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000810865900002 |
| 出版者 | SPRINGER |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/179358]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Wang, Jing; Wen, Xuefa |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing, Peoples R China 2.Univ Chinese Acad Sci, Beijing Yanshan Earth Crit Zone Natl Res Stn, Beijing, Peoples R China 3.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Jing,Wen, Xuefa. Increasing relative abundance of C4 plants mitigates a dryness-stress effect on gross primary productivity along an aridity gradient in grassland ecosystems[J]. PLANT AND SOIL,2022:17. |
| APA | Wang, Jing,&Wen, Xuefa.(2022).Increasing relative abundance of C4 plants mitigates a dryness-stress effect on gross primary productivity along an aridity gradient in grassland ecosystems.PLANT AND SOIL,17. |
| MLA | Wang, Jing,et al."Increasing relative abundance of C4 plants mitigates a dryness-stress effect on gross primary productivity along an aridity gradient in grassland ecosystems".PLANT AND SOIL (2022):17. |
入库方式： OAI收割
来源：地理科学与资源研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。