Extreme drought impacts have been underestimated in grasslands and shrublands globally
文献类型：期刊论文
| 作者 | Smith, Melinda D.3,4; Wilkins, Kate D.5; Holdrege, Martin C.6,7; Wilfahrt, Peter8; Collins, Scott L.9; Knapp, Alan K.3,4; Sala, Osvaldo E.10; Dukes, Jeffrey S.11; Phillipsi, Richard P.12; Yahdjian, Laura13 |
| 刊名 | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
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| 出版日期 | 2024-01-23 |
| 卷号 | 121期号:4页码:10 |
| 关键词 | climate extreme Drought- Net International Drought Experiment productivity |
| ISSN号 | 0027-8424 |
| DOI | 10.1073/pnas.2309881120 |
| 通讯作者 | Smith, Melinda D.(melinda.smith@colostate.edu) |
| 英文摘要 | Climate change is increasing the frequency and severity of short - term (-1 y) drought events-the most common duration of drought-globally. Yet the impact of this intensification of drought on ecosystem functioning remains poorly resolved. This is due in part to the widely disparate approaches ecologists have employed to study drought, variation in the severity and duration of drought studied, and differences among ecosystems in vegetation, edaphic and climatic attributes that can mediate drought impacts. To overcome these problems and better identify the factors that modulate drought responses, we used a coordinated distributed experiment to quantify the impact of short - term drought on grassland and shrubland ecosystems. With a standardized approach, we imposed -a single year of drought at 100 sites on six continents. Here we show that loss of a foundational ecosystem function-aboveground net primary production (ANPP)-was 60% greater at sites that experienced statistically extreme drought (1 - in - 100- y event) vs. those sites where drought was nominal (historically more common) in magnitude (35% vs. 21%, respectively). This reduction in a key carbon cycle process with a single year of extreme drought greatly exceeds previously reported losses for grasslands and shrublands. Our global experiment also revealed high variability in drought response but that relative reductions in ANPP were greater in drier ecosystems and those with fewer plant species. Overall, our results demonstrate with unprecedented rigor that the global impacts of projected increases in drought severity have been significantly underestimated and that drier and less diverse sites are likely to be most vulnerable to extreme drought. |
| WOS关键词 | TERRESTRIAL ECOSYSTEMS ; RESPONSES ; PRODUCTIVITY ; BIOMES ; EVAPOTRANSPIRATION ; METAANALYSIS ; SENSITIVITY ; VEGETATION ; COMMUNITY ; RECOVERY |
| 资助项目 | German Ministry of Education and Research (BMBF) ; Generalitat Valenciana[CIPROM/2021/001] ; NORWEGIAN RESEARCH COUNCIL MILJFORSK project[255090] ; Australian Research Council[DP150104199] ; Australian Research Council[DP190101968] ; Australian Research Council[DP210102593] ; Centre for Integrative Ecology, Deakin University ; Hermon Slade Foundation, Australia ; Estonian Research Council[PRG609] ; Estonian Research Council[CSRU180504326326] ; European Commission[H2020-MSCA-RISE-777803] ; Spanish Government[PID2021-126927NB-I00] |
| WOS研究方向 | Science & Technology - Other Topics |
| 语种 | 英语 |
| WOS记录号 | WOS:001183208000001 |
| 出版者 | NATL ACAD SCIENCES |
| 资助机构 | German Ministry of Education and Research (BMBF) ; Generalitat Valenciana ; NORWEGIAN RESEARCH COUNCIL MILJFORSK project ; Australian Research Council ; Centre for Integrative Ecology, Deakin University ; Hermon Slade Foundation, Australia ; Estonian Research Council ; European Commission ; Spanish Government |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/203757]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Smith, Melinda D. |
| 作者单位 | 1.Univ Alberta, Dept Biol Sci, Edmonton, AB T6G 2E9, Canada 2.Univ Alberta, Dept Agr Food & Nutr Sci, Edmonton, AB T6G 2P5, Canada 3.Colorado State Univ, Dept Biol, Ft Collins, CO 80523 USA 4.Colorado State Univ, Grad Degree Program Ecol, Ft Collins, CO 80523 USA 5.Denver Zoo, Denver, CO 80205 USA 6.Utah State Univ, Dept Wildland Resource, Logan, UT 84322 USA 7.Utah State Univ, Ctr Ecol, Logan, UT 84322 USA 8.Univ Minnesota, Dept Ecol Evolut & Behav, St Paul, MN 55108 USA 9.Univ New Mexico, Dept Biol, Albuquerque, NM 87131 USA 10.Arizona State Univ, Global Drylands Ctr, Sch Life Sci, Tempe, AZ 85281 USA |
| 推荐引用方式 GB/T 7714 | Smith, Melinda D.,Wilkins, Kate D.,Holdrege, Martin C.,et al. Extreme drought impacts have been underestimated in grasslands and shrublands globally[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2024,121(4):10. |
| APA | Smith, Melinda D..,Wilkins, Kate D..,Holdrege, Martin C..,Wilfahrt, Peter.,Collins, Scott L..,...&Zuo, Xiaoan.(2024).Extreme drought impacts have been underestimated in grasslands and shrublands globally.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,121(4),10. |
| MLA | Smith, Melinda D.,et al."Extreme drought impacts have been underestimated in grasslands and shrublands globally".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 121.4(2024):10. |
入库方式： OAI收割
来源：地理科学与资源研究所
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