Extreme low air temperature and reduced moisture jointly inhibit respiration in alpine grassland on the Qinghai-Tibetan Plateau

被引：2
|
作者：
Wang, Tonghong [1 ,2 ]
Wang, Xufeng [2 ,3 ]
Zhang, Songlin [1 ]
Song, Xiaoyu [2 ]
Zhang, Yang [2 ]
Tan, Junlei [2 ]
Ren, Zhiguo [2 ]
Xu, Ziwei [4 ]
Che, Tao [2 ]
Yang, Yanpeng [2 ]
Nawaz, Zain [5 ]
机构：
[1] Northwest Normal Univ, Sch Geog & Environm Sci, Lanzhou 730000, Peoples R China
[2] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Remote Sensing Gansu Prov, Heihe Remote Sensing Expt Res Stn, Lanzhou 730000, Peoples R China
[3] Qinghai Normal Univ, Acad Plateau Sci & Sustainabil, Xining 810016, Peoples R China
[4] Beijing Normal Univ, Sch Geog, State Key Lab Remote Sensing Sci, Beijing, Peoples R China
[5] Govt Coll Univ, Dept Geog, Faisalabad, Pakistan
来源：
SCIENCE OF THE TOTAL ENVIRONMENT | 2024年 / 927卷
基金：
中国国家自然科学基金;
关键词：
Alpine grassland; Carbon fluxes; Climate change; Extreme weather events; Eddy covariance; SOIL RESPIRATION; FOREST ECOSYSTEMS; CLIMATE EXTREMES; CARBON-DIOXIDE; MEADOW; DEPENDENCE; EXCHANGE; NITROGEN; BUDGETS; FLUXES;
D O I：
10.1016/j.scitotenv.2024.172039
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Alpine grassland is the main vegetation on the Qinghai-Tibetan Plateau (QTP) and exhibits high sensitivity to extreme weather events. With global warming, extreme weather events are projected to become more frequent on the QTP. However, the impact of these extreme weather events on the carbon cycle of alpine grassland remains unclear. The long-term in - situ carbon fluxes data was collected from 2013 to 2022 at an alpine grassland site to examine the impact of extreme low air temperature (ELT) and reduced moisture (including air and soil) on carbon fluxes during the growing season. Our findings indicated that a significant increase in net ecosystem production (NEP) after 2019, with the average NEP increasing from 278.91 +/- 43.27 g C m - 2 year - 1 during 2013 -2018 to 415.45 +/- 45.29 g C m - 2 year - 1 during 2019 -2022. The ecosystem carbon use efficiency (CUE)
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页数：11
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