干旱区生态环境知识资源中心(Arid): Shrub colonization regulates delta C-13 enrichment between soil and vegetation in deserts by affecting edaphic variables

Arid

DOI	10.1016/j.catena.2021.105365
	Shrub colonization regulates delta C-13 enrichment between soil and vegetation in deserts by affecting edaphic variables
	Liu, Jie; Su, Yan-gui; Li, Yan; Huang, Gang
通讯作者	Huang, G (corresponding author), Fujian Normal Univ, Inst Geog Sci, 8 Shangshan Rd, Fuzhou 350007, Fujian, Peoples R China.
来源期刊	CATENA
ISSN	0341-8162
EISSN	1872-6887
出版年	2021
卷号	203
英文摘要	delta C-13 enrichment (Delta delta C-13) is an effective indicator to reflect the temporal dynamics of soil organic carbon (SOC) stock which is usually difficult to detect due to the slow turnover rate of SOC; however, because of the rare simultaneous measurements of both plant and soil delta C-13, it is usually difficult to explore the geographic variations and controlling factors of Delta delta C-13 (delta C-1(3) of surface soil subtracting that of plant leaf). In this study, plant leaf delta C-13, soil delta C-13, and Delta delta C-13 were investigated along steep climatic and edaphic gradients to improve the understanding of SOC dynamics in deserts of northern China. Both soil delta C-13 and plant leaf delta C-13 decreased with mean annual precipitation (MAP), and soil delta C-13 was positively related to plant leaf delta C-13 and was higher than plant leaf delta C-13 across all C-3 plant-dominated deserts (Alkaline soil desert, Gobi desert, alpine desert, and temperate steppe desert) except C-4 woody shrub-dominated sandy desert. Delta delta C-13 was positively related to the SOC and soil silt contents across the C-3 -dominated desert transect, suggesting a faster decomposition of SOC at higher Delta delta C-13 sites. The shrub importance value index in the plant community enhanced Delta delta C-13 by increasing the soil silt and SOC contents in both steppe and alkaline soil deserts, indicating that shrub encroachment can increase the SOC content and SOC decomposition. Our results indicate that shrub colonization not only increases SOC content but also regulates SOC decomposition via changing vegetation cover and edaphic variables.
英文关键词	Desert Mean annual precipitation Shrub encroachment Soil organic carbon Stable carbon isotope
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000654354000059
WOS关键词	ORGANIC-MATTER ; C-13 ENRICHMENT ; CARBON SEQUESTRATION ; ISOTOPE COMPOSITION ; DEPTH PROFILES ; SURFACE SOILS ; PLANT ; CLIMATE ; DECOMPOSITION ; RESPONSES
WOS类目	Geosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS研究方向	Geology ; Agriculture ; Water Resources
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/2XILL650/349805
作者单位	[Liu, Jie; Li, Yan] Chinese Acad Sci, Xinjiang Inst Ecol & Geog, State Key Lab Desert & Oasis Ecol, Urumqi 830011, Xinjiang, Peoples R China; [Su, Yan-gui; Huang, Gang] Fujian Normal Univ, Inst Geog Sci, 8 Shangshan Rd, Fuzhou 350007, Fujian, Peoples R China; [Liu, Jie] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Liu, Jie,Su, Yan-gui,Li, Yan,et al. Shrub colonization regulates delta C-13 enrichment between soil and vegetation in deserts by affecting edaphic variables[J]. 中国科学院新疆生态与地理研究所,2021,203.
APA	Liu, Jie,Su, Yan-gui,Li, Yan,&Huang, Gang.(2021).Shrub colonization regulates delta C-13 enrichment between soil and vegetation in deserts by affecting edaphic variables.CATENA,203.
MLA	Liu, Jie,et al."Shrub colonization regulates delta C-13 enrichment between soil and vegetation in deserts by affecting edaphic variables".CATENA 203(2021).