Precipitation determines the magnitude and direction of interannual responses of soil respiration to experimental warming

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
发表期刊	PLANT AND SOIL
摘要	Background 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.
关键词	Climate changes Heterotrophic respiration Autotrophic respiration Tibetan plateau Grassland ecosystems Climate-carbon model
文献类型	期刊论文
条目标识符	http://210.75.249.4/handle/363003/60431
专题	中国科学院西北高原生物研究所
推荐引用方式 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).