干旱区生态环境知识资源中心(Arid): Impacts of long-term abandonment of alfalfa plantations on soil physicochemical properties and plant diversity in an agricultural pastoral ecotone

Arid

DOI	10.1007/s11104-023-06246-6
	Impacts of long-term abandonment of alfalfa plantations on soil physicochemical properties and plant diversity in an agricultural pastoral ecotone
	Zhang, Qian; Fan, Jun; Jia, Mulin; Shi, Changchun
通讯作者	Fan, J
来源期刊	PLANT AND SOIL
ISSN	0032-079X
EISSN	1573-5036
出版年	2023
卷号	493 期号:1-2 页码:519-534
英文摘要	Background and aimsThe abandonment of alfalfa fields is increasing in a semi-arid region. To determine the change of soil physicochemical properties and plant diversity in abandoned alfalfa fields for a long-term is essential for vegetation restoration. This study surveyed alfalfa fields of different planting ages in 2003 (1-30 years), 2014 (12-41 years), and 2022 (20-49 years) to explore the change in various indicators using a space-for-time method.ResultsThe results suggested that abandoned alfalfa fields converted into natural grasslands after 15 years, where the abundances of Gramineae and Asteraceae (59.1-84.0%) increased, whereas those of legumes decreased (16.5-9.4%). As the plant composition changed, the soil water content (SWC) decreased by 19.0% 1-15 years after abandonment, but increased by 54.5% 15-49 years after abandonment. The plant diversity (Margalef, Pielou, Simpson, and Shannon-Wiener indices), and soil organic carbon (SOC), and total nitrogen (TN) contents increased by 0.5% to 51.5% with the number of years alfalfa planting. Furthermore, the plant composition significantly affected the SWC through the soil physicochemical characteristics and plant diversity.ConclusionsThis study demonstrated that the longest time of alfalfa planting was 15 years. Furthermore, the plant composition changed from alfalfa to local grasses due to the natural succession of abandoned alfalfa fields, with increases in SWC, SOC, TN, and plant diversity in the semi-arid region.
英文关键词	Agricultural pastoral ecotone Alfalfa field Plant species diversity Soil nutrient content Soil water content
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001059898900003
WOS关键词	SEMIARID LOESS PLATEAU ; MEDICAGO-SATIVA L. ; LAND-USE ; VEGETATION DEVELOPMENT ; ECOSYSTEM STABILITY ; CARBON STORAGE ; ORGANIC-CARBON ; WATER-BALANCE ; CHINA GRAIN ; OLD-FIELDS
WOS类目	Agronomy ; Plant Sciences ; Soil Science
WOS研究方向	Agriculture ; Plant Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/398023
推荐引用方式 GB/T 7714	Zhang, Qian,Fan, Jun,Jia, Mulin,et al. Impacts of long-term abandonment of alfalfa plantations on soil physicochemical properties and plant diversity in an agricultural pastoral ecotone[J],2023,493(1-2):519-534.
APA	Zhang, Qian,Fan, Jun,Jia, Mulin,&Shi, Changchun.(2023).Impacts of long-term abandonment of alfalfa plantations on soil physicochemical properties and plant diversity in an agricultural pastoral ecotone.PLANT AND SOIL,493(1-2),519-534.
MLA	Zhang, Qian,et al."Impacts of long-term abandonment of alfalfa plantations on soil physicochemical properties and plant diversity in an agricultural pastoral ecotone".PLANT AND SOIL 493.1-2(2023):519-534.