干旱区生态环境知识资源中心(Arid): A Trait-Based Approach for Understanding Changes in Carbon Sequestration in Semi-Arid Grassland During Succession

Arid

DOI	10.1007/s10021-021-00646-4
	A Trait-Based Approach for Understanding Changes in Carbon Sequestration in Semi-Arid Grassland During Succession
	Wang, Mengyu; Lu, Nan; An, Nannan; Fu, Bojie
通讯作者	Lu, N (corresponding author), Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, 18 Shuangqing Rd, Beijing 100085, Peoples R China. ; Lu, N (corresponding author), Univ Chinese Acad Sci, Beijing 100049, Peoples R China.
来源期刊	ECOSYSTEMS
ISSN	1432-9840
EISSN	1435-0629
出版年	2021-06
英文摘要	Plant functional traits shape many ecosystem processes, including carbon sequestration in vegetation and soil. The shifts of trait-based indices can reflect changes in plant resource-use strategies during successional processes. The aim of this study was to determine how plant functional diversity affects carbon sequestration during secondary succession in semi-arid grassland, and how the limiting environmental factor (that is, soil water) affects these processes. We investigated 16 plots at three sites with different stand ages and climate conditions in the semi-arid area of the Loess Plateau, China. We measured the key plant functional traits: plant height; leaf dry matter content (LDMC); specific leaf area (SLA); leaf carbon (LC), nitrogen (LN), and phosphorus contents (LP); and ecosystem carbon components: aboveground biomass (AGB); root biomass (RB); and soil organic carbon stock (SOC). The community weighted mean (CWM) of LDMC increased and SLA and LN decreased with stand age at a wetter site, indicating that plants' resource-use strategy might shift from acquisition to conservation during succession. The exception of the shifting of CWM_SLA deviated from the general trend during succession can be attributed to the appearance of slow-growing species in the early successional stage at a drier site. The structural equation models (SEM) showed that stand age, soil water content (SWC) and functional diversity indices accounted for 55.7%, 53.2%, and 56.5% of variations in AGB, RB, and SOC during succession, respectively. The interplays of stand age and SWC were regulated by functional diversity indices, especially the CWMs of plant height and SLA, functional variance (FDvar) of plant height and functional evenness (FEve). Carbon stocks accumulated faster at wetter sites. Our results indicate that the mass ratio and niche complementary hypotheses are not contradictory in explaining relationships between community functional diversity and ecosystem carbon stocks during the restoration of semi-arid grasslands, and that SWC affects the progress of succession and carbon sequestration.
英文关键词	Plant functional trait Functional diversity Carbon sequestration Mass ratio hypothesis Niche complementary hypothesis Succession Soil water Semi-arid area Ecological restoration
类型	Article ; Early Access
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000658628300001
WOS关键词	PLANT FUNCTIONAL DIVERSITY ; COMMUNITY ABOVEGROUND BIOMASS ; SOIL FUNGAL DIVERSITY ; LITTER DECOMPOSITION ; LAND ABANDONMENT ; OLD-FIELDS ; PRODUCTIVITY ; BIODIVERSITY ; ECOSYSTEMS ; GRADIENT
WOS类目	Ecology
WOS研究方向	Environmental Sciences & Ecology
来源机构	北京师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/352133
作者单位	[Wang, Mengyu; Lu, Nan; An, Nannan; Fu, Bojie] Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, 18 Shuangqing Rd, Beijing 100085, Peoples R China; [Wang, Mengyu; Lu, Nan; An, Nannan; Fu, Bojie] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; [Fu, Bojie] Beijing Normal Univ, Fac Geog Sci, Beijing 100875, Peoples R China
推荐引用方式 GB/T 7714	Wang, Mengyu,Lu, Nan,An, Nannan,et al. A Trait-Based Approach for Understanding Changes in Carbon Sequestration in Semi-Arid Grassland During Succession[J]. 北京师范大学,2021.
APA	Wang, Mengyu,Lu, Nan,An, Nannan,&Fu, Bojie.(2021).A Trait-Based Approach for Understanding Changes in Carbon Sequestration in Semi-Arid Grassland During Succession.ECOSYSTEMS.
MLA	Wang, Mengyu,et al."A Trait-Based Approach for Understanding Changes in Carbon Sequestration in Semi-Arid Grassland During Succession".ECOSYSTEMS (2021).