干旱区生态环境知识资源中心(Arid): Carbon dynamics of the plant-soil system during vegetation succession in dune-meadow cascade ecosystems in Horqin Sandy Land, China

Arid

DOI	10.1016/j.ecolind.2023.110916
	Carbon dynamics of the plant-soil system during vegetation succession in dune-meadow cascade ecosystems in Horqin Sandy Land, China
	Kang, Xueer; Liu, Tingxi; Hao, Lina; Duan, Limin; Wang, Guanli; Singh, Vijay P.; Zhang, Miaomiao; Wu, Rong; Ma, Kuo
通讯作者	Liu, TX
来源期刊	ECOLOGICAL INDICATORS
ISSN	1470-160X
EISSN	1872-7034
出版年	2023
卷号	155
英文摘要	Understanding the relationship between the plant-soil carbon dynamics and environment is important for the management of arid and semi-arid ecosystems. Under long-term overgrazing and reclamation, the landscape of the Horqin Sandy Land has transformed into a dune-meadow ecotone. However, the effects of landscape evo-lution on the carbon dynamics in this region remain poorly investigated. This study evaluated changes in plant-soil organic carbon content and stable carbon isotope ratios (813C) attributable to vegetation restoration in dune ecosystems and wetland degradation in meadow ecosystems, and evaluate the indicative implications and driving mechanisms of the 13C enrichment in the plant-soil system. The dune ecosystems comprised semimobile dune with 25-and 15-year-old Artemisia Halodendron communities (SMAH1, SMAH2), fixed dune with 30-and 40-year-old Caragana microphylla communities (FCM1, FCM2), semimobile dune with 40-year-old Salix gordejevii community (SMSG), and transitional zone with a 30-year-old artificial Populus forest (TPF) in the gentle lower part. The meadow ecosystems comprised a corn field that transformed from natural meadow over 40 years (MCF) and a natural meadow with Phragmites australis community (MPA). The results show that plant leaves in different landscapes in the cascade ecosystems had various 813C. And the mechanism of the leaves carbon isotope frac-tionation with increasing leaf age was significant and consistent, but different vegetation communities had different nutrient utilization strategies during ontogeny. Landscape types and soil depths are the key factors affecting SOC content, its 813C (813Cs) and SOC stock changes. And the overall soil carbon turnover was accel-erated with vegetation restoration. Especially in TPF, vegetation restoration is particularly significant for SOC, which is mainly reflected in the upper 20 cm of soil profile. The degradation of MPA to MCF led to loss of SOC content and storage and accelerated the soil carbon turnover rate. The 813Cs of the dune and meadow ecosystems were positively correlated with organic-rich litter nitrogen content and were significantly negatively correlated with SOC, soil moisture, clay content, and total organic carbon to total nitrogen ratio of organic-rich litter. The revegetation using native and introduced tree and shrub species increased SOC content in dune ecosystems and significantly promoted the degree of its coupling with soil nitrogen and water.
英文关键词	Soil organic carbon Stable carbon isotope Semi-arid region Vegetation-soil system Succession Landscape evolution
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:001078073800001
WOS关键词	ORGANIC-CARBON ; STABLE CARBON ; ISOTOPE COMPOSITION ; C-13 ENRICHMENT ; GLOBAL PATTERNS ; LEAF CARBON ; RESTORATION ; NITROGEN ; FORESTS ; RATIOS
WOS类目	Biodiversity Conservation ; Environmental Sciences
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/395968
推荐引用方式 GB/T 7714	Kang, Xueer,Liu, Tingxi,Hao, Lina,et al. Carbon dynamics of the plant-soil system during vegetation succession in dune-meadow cascade ecosystems in Horqin Sandy Land, China[J],2023,155.
APA	Kang, Xueer.,Liu, Tingxi.,Hao, Lina.,Duan, Limin.,Wang, Guanli.,...&Ma, Kuo.(2023).Carbon dynamics of the plant-soil system during vegetation succession in dune-meadow cascade ecosystems in Horqin Sandy Land, China.ECOLOGICAL INDICATORS,155.
MLA	Kang, Xueer,et al."Carbon dynamics of the plant-soil system during vegetation succession in dune-meadow cascade ecosystems in Horqin Sandy Land, China".ECOLOGICAL INDICATORS 155(2023).