干旱区生态环境知识资源中心(Arid): Variations in the quantity and chemical composition of soil dissolved organic matter along a chronosequence of wolfberry plantations in an arid area of Northwest China

Arid

DOI	10.1186/s40538-024-00562-4
	Variations in the quantity and chemical composition of soil dissolved organic matter along a chronosequence of wolfberry plantations in an arid area of Northwest China
	Wu, Rongjie; Xue, Bin; Ndzana, George Martial; Wang, Yan; Fu, Longwei; Liu, Bingqing; Gao, Ruili; Ma, Kun; Du, Lingtong; An, Hui; Kamran, Muhammad
通讯作者	Xue, B
来源期刊	CHEMICAL AND BIOLOGICAL TECHNOLOGIES IN AGRICULTURE
EISSN	2196-5641
出版年	2024
卷号	11 期号:1
英文摘要	BackgroundDissolved organic matter (DOM) is the most active component of soil organic matter (SOM), playing a major role in regulating soil fertility and carbon cycling. However, the effects of different wolfberry (Lycium barbarum L.) planting ages on the chemical diversity of DOM and its interaction with soil physicochemical properties have not been comprehensively studied. In this context, we collected soil samples (0-10 cm) from wolfberry orchards at different planting ages (1, 4, 6, 10, and 13 years) and from a corn field (0 years) in the arid region of Northwest Ningxia in China to assess the changes in soil DOM quantity and quality using ultraviolet-visible absorbance, fluorescence spectroscopy, and parallel factor analysis.ResultsWe found that the ages of the wolfberry plantation changed the contents of soil nutrients and SOM. In addition, significantly higher DOM concentrations were observed at wolfberry planting ages of 10 and 13 years than those in the control group (0 years) by 176.6 and 190.2%, respectively. The specific ultraviolet absorbance at 254 nm (SUVA254) and 254 nm to 365 nm ultraviolet absorbance ratio (E2/E3) values were decreased and increased, respectively, after wolfberry planting, indicating low aromatic and molecular weight compounds of soil DOM. The biogenic index (BIX) and fluorescence index (FI) of soil DOM ranged from 0.6 to 0.7 and 1.42 to 1.93, respectively, suggesting a combination of allochthonous and autochthonous sources. The short- and long-term wolfberry cultivations of 1 and 4 years decreased and increased the humification degrees of soil DOM, respectively. The contribution rate of the protein-like (C1) fluorescence intensity decreased, while that of the fulvic acid-like component (C3) increased with increasing wolfberry planting age, suggesting a change in the structure of soil DOM from protein-like to fulvic acids. In this study, total nitrogen (TN) and exchangeable Ca2+ were the main factors affecting the quantity and quality of soil DOM in the wolfberry orchards with different planting ages.ConclusionsThis study demonstrated that long-term wolfberry plantation enhances the accumulation of soil DOM and more complex compounds, thereby promoting soil organic carbon sequestration under different planting ages and land-use types in terrestrial ecosystems. Plantation age of wolfberry influenced the quantity and chemical composition of soil DOM.Long-term wolfberry plantation (more than 10 years) significantly enhanced the DOM content.The conversion of farmland to wolfberry forest decreased the aromaticity and molecular weight of soil DOM.The fulvic acid-like substances become the main fluorescent components of soil DOM over time since wolfberry plantations.TN and exchangeable Ca2+ were the main factors affecting the quality of wolfberry soil DOM.
英文关键词	Aridisols Wolfberry Planting age Dissolved organic matter Parallel factor analysis Three-dimensional fluorescence spectrum
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:001186350700001
WOS关键词	LAND-USE ; FLUORESCENCE SPECTROSCOPY ; LYCIUM-BARBARUM ; CARBON ; WATER ; NITROGEN ; LITTER ; PERSISTENCE ; DECOMPOSITION ; PHOSPHORUS
WOS类目	Agriculture, Multidisciplinary
WOS研究方向	Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/403180
推荐引用方式 GB/T 7714	Wu, Rongjie,Xue, Bin,Ndzana, George Martial,et al. Variations in the quantity and chemical composition of soil dissolved organic matter along a chronosequence of wolfberry plantations in an arid area of Northwest China[J],2024,11(1).
APA	Wu, Rongjie.,Xue, Bin.,Ndzana, George Martial.,Wang, Yan.,Fu, Longwei.,...&Kamran, Muhammad.(2024).Variations in the quantity and chemical composition of soil dissolved organic matter along a chronosequence of wolfberry plantations in an arid area of Northwest China.CHEMICAL AND BIOLOGICAL TECHNOLOGIES IN AGRICULTURE,11(1).
MLA	Wu, Rongjie,et al."Variations in the quantity and chemical composition of soil dissolved organic matter along a chronosequence of wolfberry plantations in an arid area of Northwest China".CHEMICAL AND BIOLOGICAL TECHNOLOGIES IN AGRICULTURE 11.1(2024).