Aridity drives the response of soil total and particulate organic carbon to drought in temperate grasslands and shrublands

被引：3

作者：

Shi, Baoku ^{[1
]}

Delgado-Baquerizo, Manuel ^{[2
,3
]}

Knapp, Alan K. ^{[4
,5
]}

Smith, Melinda D. ^{[4
,5
]}

Reed, Sasha ^{[6
]}

Osborne, Brooke ^{[7
]}

Carrillo, Yolima ^{[8
]}

Maestre, Fernando T. ^{[9
]}

Zhu, Yu ^{[10
]}

Chen, Anping ^{[4
,5
]}

Wilkins, Kate ^{[4
,5
,11
]}

Holdrege, Martin C. ^{[12
,13
]}

Kulmatiski, Andrew ^{[12
,13
]}

Picon-Cochard, Catherine ^{[14
]}

Roscher, Christiane ^{[15
,16
]}

Power, Sally ^{[8
]}

Byrne, Kerry M. ^{[17
]}

Churchill, Amber C. ^{[18
]}

Jentsch, Anke ^{[19
]}

Henry, Hugh A. L. ^{[20
]}

Beard, Karen H. ^{[12
,13
]}

Schuchardt, Max A. ^{[19
]}

Eisenhauer, Nico ^{[16
,21
]}

Otfinowski, Rafael ^{[22
]}

Hautier, Yann ^{[23
]}

Shen, Huitao ^{[24
]}

Wang, Yonghui ^{[25
,26
]}

Wang, Zhongwu ^{[27
]}

Wang, Chengliang ^{[1
]}

Cusack, Daniela Francis ^{[28
,29
]}

Petraglia, Alessandro ^{[30
]}

Carbognani, Michele ^{[30
]}

Forte, T'ai G. W. ^{[30
]}

Flory, Luke ^{[31
]}

Hou, Pengli ^{[1
]}

Zhang, Tao ^{[1
]}

Gao, Weifeng ^{[1
]}

Sun, Wei ^{[1
,32
]}

机构：

[1] Northeast Normal Univ, Inst Grassland Sci, Key Lab Vegetat Ecol, Minist Educ,Jilin Songnen Grassland Ecosyst Natl O, Changchun 130024, Peoples R China

[2] CSIC, Inst Recursos Nat & Agrobiol Sevilla IRNAS, Lab Biodiversidad & Funcionamiento Ecosistem, Av Reina Mercedes 10, E-41012 Seville, Spain

[3] Univ Pablo Olavide, Unidad Asociada CSIC UPO BioFun, Seville 41013, Spain

[4] Colorado State Univ, Dept Biol, Ft Collins, CO 80523 USA

[5] Colorado State Univ, Grad Degree Program Ecol, Ft Collins, CO 80523 USA

[6] US Geol Survey, Southwest Biol Sci Ctr, Moab, UT 84532 USA

[7] Utah State Univ, Dept Environm & Soc, Moab, UT 84532 USA

[8] Western Sydney Univ, Hawkesbury Inst Environm, Penrith, NSW 2751, Australia

[9] King Abdullah Univ Sci & Technol, Biol & Environm Sci & Engn Div, Environm Sci & Engn, Thuwal 23955, Saudi Arabia

[10] Cent South Univ Forestry & Technol, Coll Life Sci & Technol, Changsha 410004, Peoples R China

[11] Denver Zool Fdn, Denver, CO 80205 USA

[12] Utah State Univ, Dept Wildland Resources, Logan, UT 84322 USA

[13] Utah State Univ, Ecol Ctr, Logan, UT 84322 USA

[14] Univ Clermont Auvergne, INRAE, VetAgro Sup, UREP, F-63000 Clermont Ferrand, France

[15] Helmholtz Ctr Environm Res, Dept Physiol Divers, UFZ, D-04318 Leipzig, Germany

[16] German Ctr Integrat Biodivers Res iDiv, Puschstr 4, D-04103 Leipzig, Germany

[17] Calif State Polytech Univ, Dept Environm Sci & Management, Arcata, CA 95521 USA

[18] Univ Minnesota, Dept Ecol Evolut & Behav, St Paul, MN 55108 USA

[19] Univ Bayreuth, Bayreuth Ctr Ecol & Environm Res, Dept Disturbance Ecol & Vegetat Dynam, Univ Str 30, D-95447 Bayreuth, Germany

[20] Univ Western Ontario, Dept Biol, London, ON N6A 5B7, Canada

[21] Univ Leipzig, Inst Biol, Puschstr 4, D-04103 Leipzig, Germany

[22] Univ Winnipeg, Dept Biol, Winnipeg, MB R3B 2E9, Canada

[23] Univ Utrecht, Dept Biol, Ecol & Biodivers Grp, Padualaan 8, NL-3584 CH Utrecht, Netherlands

[24] Hebei Acad Sci, Inst Geog Sci, Hebei Engn Res Ctr Geog Informat Applicat, Shijiazhuang 050021, Peoples R China

[25] Inner Mongolia Univ, Sch Ecol & Environm, Minist Educ, Key Lab Ecol & Resource Use Mongolian Plateau, Hohhot 010021, Peoples R China

[26] Inner Mongolia Univ, Sch Ecol & Environm, Inner Mongolia Key Lab Grassland Ecol, Hohhot 010021, Peoples R China

[27] Inner Mongolia Agr Univ, Coll Grassland Resources & Environm, Hohhot 010010, Peoples R China

[28] Colorado State Univ, Dept Ecosyst Sci & Sustainabil, Ft Collins, CO 80523 USA

[29] Smithsonian Trop Res Inst, Balboa 084303092, Panama

[30] Univ Parma, Dept Chem Life Sci & Environm Sustainabil, I-43124 Parma, Italy

[31] Univ Florida, Agron Dept, Gainesville, FL 32601 USA

[32] Northeast Normal Univ, State Environm Protect Key Lab Wetland Ecol & Vege, Changchun 130024, Jilin, Peoples R China

来源：

SCIENCE ADVANCES | 2024年 / 10卷 / 40期

基金：

欧洲研究理事会; 中国国家自然科学基金;

关键词：

NET PRIMARY PRODUCTION; MATTER; MECHANISMS; DYNAMICS; SHIFTS;

D O I：

10.1126/sciadv.adq2654

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The increasing prevalence of drought events in grasslands and shrublands worldwide potentially has impacts on soil organic carbon (SOC). We leveraged the International Drought Experiment to study how SOC, including particulate organic carbon (POC) and mineral-associated organic carbon (MAOC) concentrations, responds to extreme drought treatments (1-in-100-year) for 1 to 5 years at 19 sites worldwide. In more mesic areas (aridity index > 0.65), SOC and POC concentrations decreased by 7.9% (+/- 3.9) and 15.9% (+/- 6.2) with drought, respectively, but there were no impacts on MAOC concentrations. However, drought had no impact on SOC, POC, or MAOC concentrations in drylands (aridity index < 0.65). The response of SOC to drought varied along an aridity gradient, concomitant with interannual precipitation variability and standing SOC concentration gradients. These findings highlight the differing response magnitudes of POC and MAOC concentrations to drought and the key regulating role of aridity.

引用

页数：9

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