文献类型： 外文期刊

第一作者： Smith, Melinda D.

作者： Smith, Melinda D.;Knapp, Alan K.;Ohlert, Timothy;Smith, Melinda D.;Knapp, Alan K.;Wilkins, Kate D.;Holdrege, Martin C.;Beard, Karen H.;Kulmatiski, Andrew;Holdrege, Martin C.;Beard, Karen H.;Kulmatiski, Andrew;Wilfahrt, Peter;Anderson, Maggie;Borer, Elizabeth T.;Isbell, Forest;Seabloom, Eric W.;Collins, Scott L.;Sala, Osvaldo E.;Jordan, Samuel;Dukes, Jeffrey S.;Phillips, Richard P.;Beier, Claus;Yahdjian, Laura;Biancari, Lucio;Bondaruk, Viviana Florencia;Onatibia, Gaston R.;Pineiro-Guerra, Juan Manuel;Gherardi, Laureano A.;Larsen, Klaus Steenberg;Fraser, Lauchlan H.;Jentsch, Anke;Niu, Yujie;Loik, Michael E.;Maestre, Fernando T.;Valdecantos, Alejandro;Maestre, Fernando T.;Gozalo, Beatriz;Maturano-Ruiz, Adrian;Valdecantos, Alejandro;Power, Sally A.;Chieppa, Jeff;Nielsen, Uffe N.;Yu, Qiang;Felton, Andrew J.;Munson, Seth M.;Luo, Yiqi;Bauerle, Taryn;Abdoli, Hamed;Abedi, Mehdi;Bahalkeh, Khadijeh;Alados, Concepcion L.;Castillo-Garcia, Miguel;Pueyo, Yolanda;Alberti, Juan;Bruschetti, Carlos Martin;Cardoni, Augusto;Daleo, Pedro;Iribarne, Oscar;Alon, Moshe;Cohen, Ofer;Sternberg, Marcelo;An, Hui;Anacker, Brian;Auge, Harald;Auge, Harald;Eisenhauer, Nico;Hoss, Daniela;Roscher, Christiane;Sunnemann, Marie;Bachle, Seton;Bachle, Seton;Bahn, Michael;Ingrisch, Johannes;Batbaatar, Amgaa;Cahill, James F., Jr.;Batbaatar, Amgaa;Bork, Edward W.;Carlyle, Cameron N.;Behn, Kai;Beil, Ilka;Kreyling, Juergen;Malyshev, Andrey V.;Blindow, Irmgard;Dahlke, Sven;Byrne, Kerry M.;Calvo, Dianela A.;Leder, Cintia V.;Peter, Guadalupe;Carbognani, Michele;Forte, T'ai G. W.;Petraglia, Alessandro;Chang, Scott X.;Cianciaruso, Marcus V.;Guidoni-Martins, Karlo G.;Nobre, Paola;Cordeiro, Amanda L.;Cusack, Daniela F.;Dietterich, Lee H.;D'Antonio, Carla M.;Dietterich, Lee H.;Doherty, Tim S.;Greenville, Aaron C.;Wardle, Glenda M.;Dubbert, Maren;Ebeling, Anne;Eisenhauer, Nico;Fischer, Felicia M.;Hoss, Daniela;Sunnemann, Marie;Hoss, Daniela;Pillar, Valerio D.;Fischer, Felicia M.;Gebauer, Tobias;Anacker, Brian;Haugum, Siri Vatso;Vandvik, Vigdis;Hautier, Yann;Hefting, Mariet;Henry, Hugh A. L.;Johnson, Yari;Kelly, Eugene F.;Kimmel, Kaitlin;Kroel-Dulay, Gyorgy;Orban, Ildiko;Kroel-Dulay, Gyorgy;Orban, Ildiko;Kubert, Angelika;Werner, Christiane;Lamb, Eric G.;Larson, Julie;O'Connor, Rory C.;Lawson, Jason;Plowes, Robert M.;Linstadter, Anja;Orban, Ildiko;Liu, Jielin;Liu, Shirong;Longo, Grisel;Loydi, Alejandro;Rodriguez, Dana Aylen;Scarfo, Maria Cecilia;Luan, Junwei;Wang, Yi;Luan, Junwei;Wang, Yi;Lubbe, Frederick Curtis;Wiehl, Georg;Mackie-Haas, Kathleen;Stampfi, Andreas;Merchant, Thomas;Metcalfe, Daniel B.;Mori, Akira S.;Mori, Akira S.;Mudongo, Edwin;Newman, Gregory S.;Souza, Lara;Nimmo, Dale;Ogaya, Roma;Penuelas, Josep;Osborne, Brooke;Otfinowski, Rafael;Partel, Meelis;Pineiro-Guerra, Juan Manuel;Peri, Pablo L.;Picon-Cochard, Catherine;Pineiro-Guerra, Juan Manuel;Ploughe, Laura W.;Portales-Reyes, Cristy;Reed, Sasha C.;Ritchie, Euan G.;Roscher, Christiane;Sanchez, Ana M.;Santo, Braulio A.;Shi, Baoku;Sun, Wei;Souza, Lara;Standish, Rachel J.;Zeiter, Michaela;Stampfi, Andreas;Zeiter, Michaela;Standish, Rachel J.;Tedder, Michelle;Thorvaldsen, Pal;Tian, Dashuan;Zhu, Juntao;Zong, Ning;Tielborger, Katja;van den Brink, Liesbeth;Vankoughnett, Mathew R.;Velle, Liv Guri;Wang, Changhui;Wei, Cunzheng;Williams, Jennifer L.;Wolf, Amelia A.;Zhang, Fawei;Zuo, Xiaoan;Zuo, Xiaoan;Gebauer, Tobias;Ploughe, Laura W.

作者机构：

关键词： climate extreme; Drought-Net; International Drought Experiment; productivity

期刊名称：PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA （ 影响因子：11.1； 五年影响因子：12.0 ）

ISSN： 0027-8424

年卷期： 2024 年 121 卷 4 期

页码：

收录情况： SCI

摘要： Climate change is increasing the frequency and severity of short-term (similar to 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 similar to 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.

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