干旱区生态环境知识资源中心(Arid): Analysis of soil respiration and influencing factors in a semiarid dune-meadow cascade ecosystem

Arid

DOI	10.1016/j.scitotenv.2021.148993
	Analysis of soil respiration and influencing factors in a semiarid dune-meadow cascade ecosystem
	Duan, Limin; Liu, Tingxi; Ma, Liqun; Lei, Huimin; Singh, Vijay P.
通讯作者	Liu, TX (corresponding author), Inner Mongolia Agr Univ, Water Conservancy & Civil Engn Coll, Zhaowuda St 306, Hohhot 010018, Peoples R China.
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2021
卷号	796
英文摘要	The characteristics of soil respiration (R-s) in semiarid regions are important with regard to the carbon cycle of complex underlying surfaces and estimation of carbon emissions from regional ecosystems. During the growing season (May-September 2016), in situ observations of R-s were obtained concurrently with measurements of soil bacteria (B-s), soil moisture (M-s), and soil temperature (T-s) at depths of 0-10 cm, in a dune-meadow cascade ecosystem. Results showed that R-s differences among the various ecosystems were significant (P < 0.01), the intensity of R-s in meadows was twice stronger than that in dunes. The average values of R-s presenting a declined trend follows MPA (11.19 mu mol m(-2) s(-1)) > MAF (7.75) > SSG (6.78) > SMAH (5.02) > SFAH (4.8) > FLC (4.28) > SBG (3.09). An extremely significant (p < 0.01) positive correlated power relationship can be found between R-s and B-s, which could explain 62.41%-86.56% of the variation in R-s in the various ecosystems. Field capacity and the saturated water content were the key demarcation points for the interactive relationship between R-s and M-s, which showing a significant (P < 0.05) positive correlated power relationship in dunes, in contrast, it presenting a significant (P < 0.05) negative correlated exponential relationship in meadows. R-s was positively exponentially correlated with T-s, significant (P < 0.05) in meadows and nonsignificant (P > 0.05) in dunes. Future research should be strengthened to consider multiple growing seasons experiencing various climatic conditions for accurate estimation of terrestrial carbon emissions in arid and semiarid ecosystems. (C) 2021 Elsevier B.V. All rights reserved.
英文关键词	Semiarid region Complex underlying surface Soil respiration Environmental factors
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000698509800005
WOS关键词	HORQIN SANDY LAND ; WATER CONTENT ; CO2 EFFLUX ; MICROBIAL ACTIVITY ; CARBON-DIOXIDE ; TEMPERATURE ; FOREST ; DYNAMICS ; DECOMPOSITION ; COMMUNITIES
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
来源机构	清华大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/368168
作者单位	[Duan, Limin; Liu, Tingxi; Ma, Liqun] Inner Mongolia Agr Univ, Water Conservancy & Civil Engn Coll, Zhaowuda St 306, Hohhot 010018, Peoples R China; [Duan, Limin; Liu, Tingxi] Inner Mongolia Key Lab Protect & Utilizat Water R, Hohhot 010018, Peoples R China; [Ma, Liqun] Water Affairs Bur Kailu Cty, Tongliao 028400, Peoples R China; [Lei, Huimin] Tsinghua Univ, Dept Hydraul Engn, State Key Lab Hydrosci & Engn, Beijing 100084, Peoples R China; [Singh, Vijay P.] Texas A&M Univ, Dept Biol & Agr Engn, College Stn, TX 77843 USA; [Singh, Vijay P.] Texas A&M Univ, Zachry Dept Civil Engn, College Stn, TX 77843 USA
推荐引用方式 GB/T 7714	Duan, Limin,Liu, Tingxi,Ma, Liqun,et al. Analysis of soil respiration and influencing factors in a semiarid dune-meadow cascade ecosystem[J]. 清华大学,2021,796.
APA	Duan, Limin,Liu, Tingxi,Ma, Liqun,Lei, Huimin,&Singh, Vijay P..(2021).Analysis of soil respiration and influencing factors in a semiarid dune-meadow cascade ecosystem.SCIENCE OF THE TOTAL ENVIRONMENT,796.
MLA	Duan, Limin,et al."Analysis of soil respiration and influencing factors in a semiarid dune-meadow cascade ecosystem".SCIENCE OF THE TOTAL ENVIRONMENT 796(2021).