干旱区生态环境知识资源中心(Arid): Biocrust contribution to soil CO2 flux in desert shrubland ecosystem of northwest Mexico

Arid

DOI	10.1080/15324982.2021.2007428
	Biocrust contribution to soil CO2 flux in desert shrubland ecosystem of northwest Mexico
	Ayala-Nino, Fernando; Maya-Delgado, Yolanda; Troyo-Dieguez, Enrique; Garcillan, Pedro P.
通讯作者	Ayala-Nino, F (corresponding author), Univ Nacl Autonoma Mexico, Fac Estudios Super Iztacala, Lab Edafol, UBIPRO, Ciudad De Mexico, Mexico.
来源期刊	ARID LAND RESEARCH AND MANAGEMENT
ISSN	1532-4982
EISSN	1532-4990
出版年	2021-11
英文摘要	Soil respiration is a critical ecological process and is a hierarchical component of ecosystem respiration that regulates the global carbon cycle. But there is scarce knowledge on respiration dynamics in water-stressed ecosystems and the influence of biocrusts. Soil respiration-values varied from 0.099 to 0.828 mu mol s(-1) m(-2) after extraordinary rains; after this period, recorded values were null or negative at the most (0.000 to -0.055 mu mol s(-1) m(-2)). Shrubland soil with and without biocrusts showed the highest net CO2 exchange values and in disturbed soil with and without biocrusts (0.067; 0.059; 0.048, and 0.023 mu mol s(-1) m(-2)). The results showed that shrubland soil with BSC absorbed more CO2 than the rest of the experimental variants. Accordingly, the observed low precipitation combined with high temperatures and evapotranspiration could not activate the BSC respiration process. Such an event seemed to occur under specific temperature and moisture conditions, anyhow related to extraordinary rain events to emit CO2 to the atmosphere. Reports of negative soil respiration values in drylands are very scarce, so we discuss the possible processes that could cause this phenomenon for our study area.
英文关键词	CO2 flux dry land ecosystem water stress biological soil crusts
类型	Article ; Early Access
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000722776000001
WOS关键词	BAJA-CALIFORNIA PENINSULA ; CLIMATE-CHANGE ; CRUSTED SOILS ; CARBON FLUX ; RESPIRATION ; TEMPERATURE ; VARIABILITY ; EFFLUX ; COMMUNITY ; PATTERNS
WOS类目	Environmental Sciences ; Soil Science
WOS研究方向	Environmental Sciences & Ecology ; Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/374632
作者单位	[Ayala-Nino, Fernando] Univ Nacl Autonoma Mexico, Fac Estudios Super Iztacala, Lab Edafol, UBIPRO, Ciudad De Mexico, Mexico; [Maya-Delgado, Yolanda; Troyo-Dieguez, Enrique; Garcillan, Pedro P.] Inst Politecn Nacl, Ctr Invest Biol Noroeste CIBNOR SC, 195 Col Playa Palo Santa Rita Sur, La Paz, Bcs, Mexico
推荐引用方式 GB/T 7714	Ayala-Nino, Fernando,Maya-Delgado, Yolanda,Troyo-Dieguez, Enrique,et al. Biocrust contribution to soil CO2 flux in desert shrubland ecosystem of northwest Mexico[J],2021.
APA	Ayala-Nino, Fernando,Maya-Delgado, Yolanda,Troyo-Dieguez, Enrique,&Garcillan, Pedro P..(2021).Biocrust contribution to soil CO2 flux in desert shrubland ecosystem of northwest Mexico.ARID LAND RESEARCH AND MANAGEMENT.
MLA	Ayala-Nino, Fernando,et al."Biocrust contribution to soil CO2 flux in desert shrubland ecosystem of northwest Mexico".ARID LAND RESEARCH AND MANAGEMENT (2021).