干旱区生态环境知识资源中心(Arid): Herbaceous layer determines the relationship between soil respiration and photosynthesis in a shrub-dominated desert plant community

Arid

DOI	10.1007/s11104-020-04484-6
	Herbaceous layer determines the relationship between soil respiration and photosynthesis in a shrub-dominated desert plant community
	Ma, Jie 1,2,3; Liu, Ran 1,2,3; Li, Chenhua 1,2,3; Fan, Lianlian 1,3,4; Xu, Guiying 1,2,3; Li, Yan1,2,3
通讯作者	Li, Yan
来源期刊	PLANT AND SOIL
ISSN	0032-079X
EISSN	1573-5036
出版年	2020
卷号	449 期号:1-2 页码:193-207
英文摘要	Aims Although the linkages between aboveground photosynthates production and belowground respiration processes have been well studied, doubts remain as to the extent that photosynthate regulates soil respiration (R-soil) and its generality throughout the growing season in a given ecosystem. This study aimed to test whether photosynthesis affected R-soil at the diurnal scale and assess how the relation between them changed with changing vegetation composition. Methods We measured R-soil and gross primary productivity (GPP using eddy covariance) in two consecutive growing seasons (2013-2014) in a desert ecosystem, western China. We compared R-soil on sunny days with that on adjacent cloudy days in two periods with different vegetation compositions [herbs-shrub coexistence period (HSP) and purely shrubs dominated period (SDP)] to identify how photosynthesis affect R-soil. Results GPP regulated diurnal variations of R-soil conspicuously in spite of the strong correlation between soil temperature (T-soil) and R-soil, but such regulation was limited in HSP. 48.3% of the changes in daytime R-soil between sunny and cloudy days was explained by changes in T-soil together with changes of GPP in HSP. When spring annuals died, no differences in daily amplitude and average of R-soil between sunny and cloudy days were found. Conclusions Our results suggested that effect of photosynthesis on R-soil was not constant throughout the growing season. In the presence of herbaceous plants, R-soil was directly related to photosynthesis. These findings highlighted the important role of photosynthesis played in R-soil regulation and the importance of community composition in determining the extent that photosynthesis affects R-soil.
英文关键词	Herbaceous layer Canopy photosynthesis Soil respiration Diurnal variation Community composition
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000528829400014
WOS关键词	TERRESTRIAL ECOSYSTEMS ; CO2 EFFLUX ; TIME-LAG ; CARBON ; WATER ; DIEL ; DYNAMICS ; VARIABILITY ; MECHANISMS ; PATTERNS
WOS类目	Agronomy ; Plant Sciences ; Soil Science
WOS研究方向	Agriculture ; Plant Sciences
来源机构	中国科学院新疆生态与地理研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/315329
作者单位	1.Chinese Acad Sci, Xinjiang Inst Ecol & Geog, State Key Lab Desert & Oasis Ecol, 818 South Beijing Rd, Urumqi 830011, Xinjiang, Peoples R China; 2.Chinese Acad Sci, Fukang Stn Desert Ecol, Fukang 831505, Xinjiang, Peoples R China; 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China; 4.Chinese Acad Sci, Res Ctr Ecol & Environm Cent Asia, Urumqi 830011, Xinjiang, Peoples R China
推荐引用方式 GB/T 7714	Ma, Jie,Liu, Ran,Li, Chenhua,et al. Herbaceous layer determines the relationship between soil respiration and photosynthesis in a shrub-dominated desert plant community[J]. 中国科学院新疆生态与地理研究所,2020,449(1-2):193-207.
APA	Ma, Jie,Liu, Ran,Li, Chenhua,Fan, Lianlian,Xu, Guiying,&Li, Yan.(2020).Herbaceous layer determines the relationship between soil respiration and photosynthesis in a shrub-dominated desert plant community.PLANT AND SOIL,449(1-2),193-207.
MLA	Ma, Jie,et al."Herbaceous layer determines the relationship between soil respiration and photosynthesis in a shrub-dominated desert plant community".PLANT AND SOIL 449.1-2(2020):193-207.