干旱区生态环境知识资源中心(Arid): Response of the plant-soil system to desertification in the Hulun Buir Sandy Land, China

Arid

DOI	10.1002/ldr.4586
	Response of the plant-soil system to desertification in the Hulun Buir Sandy Land, China
	Chen, Yun; Li, Yuqiang; Cao, Wenjie; Wang, Xuyang; Duan, Yulong; Liu, Xinping; Yao, Caiping
通讯作者	Li, YQ
来源期刊	LAND DEGRADATION & DEVELOPMENT
ISSN	1085-3278
EISSN	1099-145X
出版年	2023
卷号	34 期号:7 页码:2024-2037
英文摘要	In this study, the vegetation and soils of different desertification landscapes (sandy grassland, and fixed, semi-fixed, semi-mobile, and mobile dunes) in the Hulun Buir Sandy Land were examined to quantify the impacts of desertification on plants, soils, and microbes, and the key limiting factors of restoration. Desertification caused soil quality to decline and led to an imbalance of nitrogen (N) and phosphorus (P) supplies (N:P ratios decreased significantly from 3.55-1.8, p < 0.05). Desertification did not change the stoichiometric relationships among plant carbon (C), N, and P at a community level, but promoted redistribution of nutrients from roots to aboveground tissues. The aboveground biomass N and P increased by 9.8% and 39.3%, respectively from grassland to mobile dunes, but these of the underground biomass decreased by 26.1% and 37.7%, respectively. N limitation (plant N:P < 10) occurred at the community level. Desertification led to the change of dominant species from perennial herbs to annual psammophytes, and plant diversity (from 1.15-0.79) and productivity (from 880.6 to 128.6 g m(-2)) first increased slightly (p > 0.05) and then decreased sharply (p < 0.05) with increasing desertification, but with no significant (p > 0.05) change of the microbial community. Redundancy analysis showed that the main environmental drivers were the soil N:P (with an explanation of 29.6%), followed by pH, electrical conductivity, and the soil's fine particles (with a total explanation of 24.3%). Based on these results, three reference frames were proposed for the restoration of the near-original vegetation community.
英文关键词	community characteristics desertification ecological stoichiometry limiting factor restoration reference frame
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000905669000001
WOS关键词	PHYSICOCHEMICAL PROPERTIES ; MICROBIAL COMMUNITY ; BACTERIAL COMMUNITY ; N CONTENT ; VEGETATION ; GRASSLAND ; DIVERSITY ; GRADIENT ; NITROGEN ; HORQIN
WOS类目	Environmental Sciences ; Soil Science
WOS研究方向	Environmental Sciences & Ecology ; Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/397736
推荐引用方式 GB/T 7714	Chen, Yun,Li, Yuqiang,Cao, Wenjie,et al. Response of the plant-soil system to desertification in the Hulun Buir Sandy Land, China[J],2023,34(7):2024-2037.
APA	Chen, Yun.,Li, Yuqiang.,Cao, Wenjie.,Wang, Xuyang.,Duan, Yulong.,...&Yao, Caiping.(2023).Response of the plant-soil system to desertification in the Hulun Buir Sandy Land, China.LAND DEGRADATION & DEVELOPMENT,34(7),2024-2037.
MLA	Chen, Yun,et al."Response of the plant-soil system to desertification in the Hulun Buir Sandy Land, China".LAND DEGRADATION & DEVELOPMENT 34.7(2023):2024-2037.