干旱区生态环境知识资源中心(Arid): Soil respiration sensitivity to temperature in biocrusted soils in a desert-shrubland ecosystem

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DOI	10.1016/j.catena.2020.104556
	Soil respiration sensitivity to temperature in biocrusted soils in a desert-shrubland ecosystem
	Liu, Peng; Zha, Tianshan; Jia, Xin; Bourque, Charles P-A; Tian, Yun; Ma, Jingyong; Bai, Yujie; Wu, Yajuan; Muhammad, Hayat
通讯作者	Zha, TS
来源期刊	CATENA
ISSN	0341-8162
EISSN	1872-6887
出版年	2020
卷号	191
英文摘要	A precise prediction of the response in soil respiration (R-s) to climate warming requires the temperature-driven portion of the response to be characterized separately from the global, undecomposed response. Eliminating non-temperature-driven effects, which tend to confound the response in R-s is possible with Singular Spectrum Analysis (SSA), a non-parametric approach to timeseries analysis. R-s and ancillary data were collected at three microsites in a desert-shrubland ecosystem in northwest China over a three-year period (i.e., 2013-2015). The microsites include desert-sites with non-biocrusted, lichen-crusted, and moss-crusted soil surfaces, or NC, LC, and MC, respectively. Results revealed that temperature sensitivity in R-s (i.e., Q(10)) based on the original, un-processed R-s-data and a seasonal equation relating R-s to temperature were similar among microsites, with similar amplitudes in R-s. High-frequency bins of R-s with sub-signals with a period < 90 days, obtained by subtracting the low-frequency bins from timeseries of R-s were positively correlated with soil moisture (theta) at all microsites. Whereas, the same high-frequency bins were individually decoupled from soil temperature at LC and MC. This suggests that the influence of theta on the response in R-s to temperature dominated the R-s-measurements over the shorter term. After eliminating the non-temperature effects on R-s with SSA, Qio tended to produce lower values, i.e., 1.40, 1.28, and 1.34 for NC, LC and MC, respectively, when compared to cases where non-temperature effects were not removed, yielding a mean of 2.28. Q(10)-values estimated with SSA-processed R-s-data were consistent with those published at the ecosystem level (i.e., Re similar to 1.40). The research suggests that SSA-adjusted Q(10)-values tend to be similar with those at the ecosystem scale. Future theoretical work is anticipated using a convergent temperature-only-based value of Q(10 )between R-s and R-e across ecosystems.
英文关键词	Soil respiration Singular spectrum analysis Q(10) Climate-carbon model Drylands
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000531077700002
WOS关键词	DEPENDENCE ; CLIMATE ; PHOTOSYNTHESIS ; CONVERGENCE ; INCREASES ; EXCHANGE ; Q(10)
WOS类目	Geosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS研究方向	Geology ; Agriculture ; Water Resources
来源机构	北京林业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/324414
作者单位	[Liu, Peng; Zha, Tianshan; Jia, Xin; Bourque, Charles P-A; Tian, Yun; Ma, Jingyong; Bai, Yujie; Wu, Yajuan; Muhammad, Hayat] Beijing Forestry Univ, Sch Soil & Water Conservat, Yanchi Res Stn, Beijing 100083, Peoples R China; [Liu, Peng; Zha, Tianshan; Jia, Xin; Bourque, Charles P-A; Tian, Yun; Ma, Jingyong; Bai, Yujie; Wu, Yajuan; Muhammad, Hayat] Beijing Forestry Univ, Key Lab State Forestry Adm Soil & Water Conservat, Beijing 100083, Peoples R China; [Bourque, Charles P-A] Univ New Brunswick, Fac Forestry & Environm Management, Fredericton, NB E3B 5A3, Canada
推荐引用方式 GB/T 7714	Liu, Peng,Zha, Tianshan,Jia, Xin,et al. Soil respiration sensitivity to temperature in biocrusted soils in a desert-shrubland ecosystem[J]. 北京林业大学,2020,191.
APA	Liu, Peng.,Zha, Tianshan.,Jia, Xin.,Bourque, Charles P-A.,Tian, Yun.,...&Muhammad, Hayat.(2020).Soil respiration sensitivity to temperature in biocrusted soils in a desert-shrubland ecosystem.CATENA,191.
MLA	Liu, Peng,et al."Soil respiration sensitivity to temperature in biocrusted soils in a desert-shrubland ecosystem".CATENA 191(2020).