干旱区生态环境知识资源中心(Arid): Soil Carbon and Nitrogen Stocks and Their Influencing Factors in Different-Aged Stands of Sand-Fixing Caragana korshinskii in the Mu Us Desert of Northwest China

Arid

DOI	10.3390/f15061018
	Soil Carbon and Nitrogen Stocks and Their Influencing Factors in Different-Aged Stands of Sand-Fixing Caragana korshinskii in the Mu Us Desert of Northwest China
	Yu, Shuang; Yang, Junlong; Norghauer, Julian M.; Yang, Jun; Yang, Bo; Zhang, Hongmei; Li, Xiaowei
通讯作者	Li, XW
来源期刊	FORESTS
EISSN	1999-4907
出版年	2024
卷号	15 期号:6
英文摘要	Establishing artificial sand-fixing shrubs is a key measure to curb dune flow and drive changes in the soil stocks and cycling of carbon and nitrogen. But our understanding of these dynamics across years of sand-fixing afforestation and the factors influencing them remains inadequate, making it hard to accurately assess its capacity to sequester carbon. To fill that knowledge gap, this study investigated soil organic carbon (SOC) and soil total nitrogen (STN) stocks in Mu Us Desert under artificial sand-fixing shrub stands of different ages (10, 30, 50, and 70 years old) vis-& agrave;-vis a mobile sand dune, to determine whether Caragana korshinskii afforestation improved stock characteristics and whether SOC and STN stocks were correlated during the restoration processes. The results showed that the pattern observed is consistent with an increase over time in the stocks of both SOC and STN. At 10, 30, 50, and 70 years, these stocks were found to be 1.8, 2.3, 3.2, and 5.5 times higher for SOC, and 1.3, 1.6, 2.1, and 2.7 times higher for STN, respectively, than those of the control (mobile sand) dune. Stocks of SOC and STN mainly increased significantly in the 0-10 cm soil layer. The SOC stock was correlated positively with the STN stock as well as the C:N ratio. The slope of the regression for the C:N ratio against stand age was positive, increasing slightly faster with afforestation age. Additionally, our findings suggest that during the establishment of artificial stands of shrubs, the size of the STN stock did not expand as fast as the SOC stock, resulting in an asynchronous N supply and demand that likely limits the accumulation of soil organic matter. This research provides important evidence for the sustainable development of desertified ecosystems.
英文关键词	afforestation Mu Us sandy land soil carbon and nitrogen stocks soil carbon-nitrogen interaction
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:001257168600001
WOS关键词	XEROPHYTIC SHRUBS ; TENGGER DESERT ; AFFORESTATION ; LAND ; DESERTIFICATION ; SEQUESTRATION ; CHRONOSEQUENCE ; ACCUMULATION ; LIMITATION ; CYCLES
WOS类目	Forestry
WOS研究方向	Forestry
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/403802
推荐引用方式 GB/T 7714	Yu, Shuang,Yang, Junlong,Norghauer, Julian M.,et al. Soil Carbon and Nitrogen Stocks and Their Influencing Factors in Different-Aged Stands of Sand-Fixing Caragana korshinskii in the Mu Us Desert of Northwest China[J],2024,15(6).
APA	Yu, Shuang.,Yang, Junlong.,Norghauer, Julian M..,Yang, Jun.,Yang, Bo.,...&Li, Xiaowei.(2024).Soil Carbon and Nitrogen Stocks and Their Influencing Factors in Different-Aged Stands of Sand-Fixing Caragana korshinskii in the Mu Us Desert of Northwest China.FORESTS,15(6).
MLA	Yu, Shuang,et al."Soil Carbon and Nitrogen Stocks and Their Influencing Factors in Different-Aged Stands of Sand-Fixing Caragana korshinskii in the Mu Us Desert of Northwest China".FORESTS 15.6(2024).