NWIPB OpenIR
Precipitation determines the magnitude and direction of interannual responses of soil respiration to experimental warming
Wang, Yonghui; Song, Chao; Liu, Huiying; Wang, Shiping; Zeng, Hui; Luo, Caiyun; He, Jin-Sheng
2020
Source PublicationPLANT AND SOIL
AbstractBackground and aims Soil respiration (R-s) is expected to positively feedback to climate warming. The strength of this feedback is uncertain as numerous environmental factors, such as precipitation and soil moisture, can moderate the warming response of R-s. Methods We combined seven-year R-s measurements in a warming experiment in the Tibetan alpine grassland with a meta-analysis on grassland warming experiments globally to investigate how precipitation and soil moisture influences the warming response of R-s. We further analyzed the warming responses of heterotrophic (R-h) and autotrophic (R-a) components of R-s. Results Warming enhanced growing-season R-s in the wet years but decreased it in the dry years in the field experiment at the Tibetan grassland. Precipitation modulated the warming responses of growing-season R-s via R-h, but not R-a. Consistent with the field experiment, a positive relationship between precipitation and the warming response of growing-season R-s was also observed in the global-scale meta-analysis on grassland warming experiments. Conclusions Precipitation influences the warming effects on R-s and could result in variation in warming response of R-s across years and experimental systems. Empirical functions provided by this study could be used to reduce the uncertainty in predicting R-s in a warmer future.
KeywordClimate changes Heterotrophic respiration Autotrophic respiration Tibetan plateau Grassland ecosystems Climate-carbon model
Document Type期刊论文
Identifierhttp://210.75.249.4/handle/363003/60431
Collection中国科学院西北高原生物研究所
Recommended Citation
GB/T 7714
Wang, Yonghui,Song, Chao,Liu, Huiying,et al. Precipitation determines the magnitude and direction of interannual responses of soil respiration to experimental warming[J]. PLANT AND SOIL,2020.
APA Wang, Yonghui.,Song, Chao.,Liu, Huiying.,Wang, Shiping.,Zeng, Hui.,...&He, Jin-Sheng.(2020).Precipitation determines the magnitude and direction of interannual responses of soil respiration to experimental warming.PLANT AND SOIL.
MLA Wang, Yonghui,et al."Precipitation determines the magnitude and direction of interannual responses of soil respiration to experimental warming".PLANT AND SOIL (2020).
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