Relative importance between biogeochemical and biogeophysical effects in regulating terrestrial ecosystem-climate feedback in northern high latitudes

	Relative importance between biogeochemical and biogeophysical effects in regulating terrestrial ecosystem-climate feedback in northern high latitudes
	Zhu, Xudong 1; Zhuang, Qianlai 1
刊名	JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
	2016
卷号	121 期号:10 页码:5736-5748
关键词	DATA ASSIMILATION SYSTEM AMSR-E PARTICLE FILTER SOUTHWESTERN FRANCE CLIMATE MODELS LAND MODEL SURFACE VALIDATION PRODUCTS SCHEMES
通讯作者	Zhuang, QL (reprint author), Purdue Univ, Dept Earth Atmospher & Planetary Sci, W Lafayette, IN 47907 USA. ; Zhuang, QL (reprint author), Purdue Univ, Dept Agron, W Lafayette, IN 47907 USA.
英文摘要	Warming-induced changes in structures and functions of northern terrestrial ecosystems (NTEs), including their regulation on terrestrial biogeochemistry and surface energy balance, may exert positive or negative feedback to the climate system. However, the relative importance among these biogeochemical and biogeophysical feedback is not well understood. Here we use a terrestrial ecosystem model to quantify spatially explicit ecosystem-climate feedback over NTEs (north of 50 degrees N) under four climate change scenarios from 2010 to 2100, including biogeochemical feedback from climate-induced changes in net CH4 exchanges (NME) and net CO2 exchanges (NCE) and biogeophysical feedback from changes in surface energy partitioning associated with snow cover and vegetation biomass dynamics. Our results indicate that (1) biogeochemical and biogeophysical feedback are attributed more to the changes in NME and snow cover dynamics, respectively; (2) net biogeophysical feedback is much larger than net biogeochemical feedback; (3) NTEs will cause a net positive radiative forcing of 0.04-0.26 Wm(-2) between 2010 and 2100. Our findings support the notion that NTEs will exert positive net climate feedback; however, our estimation of positive net biogeochemical feedback including NME- and NCE-induced effects is contrary to previous studies showing negative net biogeochemical feedback including NCE-induced effect only. This study highlights the importance of NME-induced biogeochemical effect in regulating ecosystem-climate feedback in NTEs and implies that previous studies without considering NME-induced effect might have underestimated the intensity of total terrestrial feedback to the climate system.
学科主题	Meteorology & Atmospheric Sciences
类目[WOS]	Meteorology & Atmospheric Sciences
收录类别	SCI
语种	英语
WOS记录号	WOS:000381629900036
内容类型	期刊论文
源URL	[http://ir.radi.ac.cn/handle/183411/39428]
专题	遥感与数字地球研究所_SCI/EI期刊论文_期刊论文
作者单位	1.Xiamen Univ, Minist Educ, Key Lab Coastal & Wetland Ecosyst, Xiamen, Peoples R China 2.Chinese Acad Sci, State Key Lab Remote Sensing Sci, Inst Remote Sensing & Digital Earth, Beijing, Peoples R China 3.Purdue Univ, Dept Earth Atmospher & Planetary Sci, W Lafayette, IN 47907 USA 4.Purdue Univ, Dept Agron, W Lafayette, IN 47907 USA
推荐引用方式 GB/T 7714	Zhu, Xudong,Zhuang, Qianlai. Relative importance between biogeochemical and biogeophysical effects in regulating terrestrial ecosystem-climate feedback in northern high latitudes[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2016,121(10):5736-5748.
APA	Zhu, Xudong,&Zhuang, Qianlai.(2016).Relative importance between biogeochemical and biogeophysical effects in regulating terrestrial ecosystem-climate feedback in northern high latitudes.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,121(10),5736-5748.
MLA	Zhu, Xudong,et al."Relative importance between biogeochemical and biogeophysical effects in regulating terrestrial ecosystem-climate feedback in northern high latitudes".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 121.10(2016):5736-5748.