Summer soil drying exacerbated by earlier spring greening of northern vegetation

被引：330

作者：

Lian, Xu ^{[1
]}

Piao, Shilong ^{[1
,2
,3
,4
]}

Li, Laurent Z. X. ^{[4
]}

Li, Yue ^{[1
]}

Huntingford, Chris ^{[5
]}

Ciais, Philippe ^{[6
]}

Cescatti, Alessandro ^{[7
]}

Janssens, Ivan A. ^{[8
]}

Penuelas, Josep ^{[9
,10
]}

Buermann, Wolfgang ^{[11
,12
]}

Chen, Anping ^{[13
]}

Li, Xiangyi ^{[1
]}

Myneni, Ranga B. ^{[14
]}

Wang, Xuhui ^{[1
,6
]}

Wang, Yilong ^{[6
]}

Yang, Yuting ^{[15
]}

Zeng, Zhenzhong ^{[1
]}

Zhang, Yongqiang ^{[16
]}

McVicar, Tim R. ^{[17
,18
]}

机构：

[1] Peking Univ, Sino French Inst Earth Syst Sci, Coll Urban & Environm Sci, Beijing 100871, Peoples R China

[2] Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Alpine Ecol, Beijing 100101, Peoples R China

[3] Chinese Acad Sci, Ctr Excellence Tibetan Earth Sci, Beijing 100085, Peoples R China

[4] Sorbonne Univ, Ecole Normale Super, Ecole Polytech, Lab Meteorol Dynam,CNRS, Paris, France

[5] Ctr Ecol & Hydrol, Wallingford OX10 8BB, Oxon, England

[6] UVSQ, CNRS, CEA, LSCE, F-91191 Gif Sur Yvette, France

[7] European Commiss, Joint Res Ctr, Directorate Sustainable Resources, I-21027 Ispra, Varese, Italy

[8] Univ Antwerp, Dept Biol, Univ Pl 1, B-2610 Antwerp, Belgium

[9] CREAF, Barcelona 08193, Catalonia, Spain

[10] UAB, CSIC, Global Ecol Unit CREAF, Barcelona 08193, Catalonia, Spain

[11] Univ Calif Los Angeles, Inst Environm & Sustainabil, Los Angeles, CA 90095 USA

[12] Univ Augsburg, Dept Geog, D-86159 Augsburg, Germany

[13] Purdue Univ, Dept Forestry & Nat Resources, W Lafayette, IN 46907 USA

[14] Boston Univ, Dept Earth & Environm, Boston, MA 02215 USA

[15] Tsinghua Univ, Dept Hydraul Engn, State Key Lab Hydrosci & Engn, Beijing, Peoples R China

[16] Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China

[17] CSIRO Land & Water, Canberra, ACT, Australia

[18] Australian Res Council, Ctr Excellence Climate Extremes, Canberra, ACT, Australia

来源：

SCIENCE ADVANCES | 2020年 / 6卷 / 01期

基金：

中国国家自然科学基金; 欧洲研究理事会;

关键词：

ATMOSPHERIC CO2; DATA SETS; LAND; EVAPOTRANSPIRATION; CLIMATE; SURFACE; IMPACT; PHENOLOGY; SHIFTS; TREND;

D O I：

10.1126/sciadv.aax0255

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：

Earlier vegetation greening under climate change raises evapotranspiration and thus lowers spring soil moisture, yet the extent and magnitude of this water deficit persistence into the following summer remain elusive. We provide observational evidence that increased foliage cover over the Northern Hemisphere, during 1982-2011, triggers an additional soil moisture deficit that is further carried over into summer. Climate model simulations independently support this and attribute the driving process to be larger increases in evapotranspiration than in precipitation. This extra soil drying is projected to amplify the frequency and intensity of summer heatwaves. Most feedbacks operate locally, except for a notable teleconnection where extra moisture transpired over Europe is transported to central Siberia. Model results illustrate that this teleconnection offsets Siberian soil moisture losses from local spring greening. Our results highlight that climate change adaptation planning must account for the extra summer water and heatwave stress inherited from warming-induced earlier greening.

引用

页数：11

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