干旱区生态环境知识资源中心(Arid): Conversion of farmland to forest or grassland improves soil carbon, nitrogen, and ecosystem multi-functionality in a subtropical karst region of southwest China

Arid

DOI	10.1038/s41598-024-68883-w
	Conversion of farmland to forest or grassland improves soil carbon, nitrogen, and ecosystem multi-functionality in a subtropical karst region of southwest China
	Zhang, Lijin; Du, Hu; Song, Tongqing; Yang, Zhiqi; Peng, Wanxia; Gong, Jialiang; Huang, Guoqin; Li, Yun
通讯作者	Du, H
来源期刊	SCIENTIFIC REPORTS
ISSN	2045-2322
出版年	2024
卷号	14 期号:1
英文摘要	The conversion of farmland to forest in China has been recognized for its positive impact on above-ground vegetation and carbon sequestration. However, the impact on soil quality during land conversion, particularly in vulnerable karst areas, has received less attention. In this study conducted in a karst area of southwest China, eight different farmland conversion strategies were investigated to assess improvements in surface soil carbon, nitrogen, and ecosystem multi-functionality (EMF). Our results showed that farmland converted to afforestation areas or farmland that was abandoned contained higher amounts of carbon (total, organic, active) and ammonium nitrogen (NH4+-N) in the soil compared to farmland converted to grassland or maize crop. Soluble organic carbon levels were higher in afforestation and grassland areas compared to maize crop controls. By contrast, soil from grassland and abandoned land exhibited higher levels of nitrate nitrogen (NO3--N) compared to afforestation land or maize crop controls. There were no differences in NH4+-N content between any condition, except for afforestation land that specifically contained the Zenia insignis plant species. Afforestation land consistently exhibited higher EMF values than grassland. Pearson correlation analysis revealed positive relationships between soil indices and EMF scores, except for NO3--N.Random forest analysis explained 95% of the variation in soil EMF and identified specific soil factors: total carbon, organic carbon, active labile organic carbon, total nitrogen, and ammonium nitrogen, as the main drivers of soil multi-functionality. Our studies show how various reforestation strategies can enhance soil nutrient sequestration and improve soil multi-functionality of farmland in the karst areas.These findings provide insight into sustainable soil management practices for converting farmland into natural areas.
英文关键词	Soil multi-functionality Carbon Nitrogen Rocky desertification Ecological restoration Karst ecosystem
类型	Article
语种	英语
开放获取类型	gold, Green Published
收录类别	SCI-E
WOS记录号	WOS:001283344000094
WOS关键词	LAND-USE CHANGE ; MINIMUM DATA SET ; VEGETATION RESTORATION ; ORGANIC-CARBON ; AGRICULTURAL SOILS ; LOESS PLATEAU ; QUALITY ; SEQUESTRATION ; ACCUMULATION ; LANDSCAPES
WOS类目	Multidisciplinary Sciences
WOS研究方向	Science & Technology - Other Topics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/405606
推荐引用方式 GB/T 7714	Zhang, Lijin,Du, Hu,Song, Tongqing,et al. Conversion of farmland to forest or grassland improves soil carbon, nitrogen, and ecosystem multi-functionality in a subtropical karst region of southwest China[J],2024,14(1).
APA	Zhang, Lijin.,Du, Hu.,Song, Tongqing.,Yang, Zhiqi.,Peng, Wanxia.,...&Li, Yun.(2024).Conversion of farmland to forest or grassland improves soil carbon, nitrogen, and ecosystem multi-functionality in a subtropical karst region of southwest China.SCIENTIFIC REPORTS,14(1).
MLA	Zhang, Lijin,et al."Conversion of farmland to forest or grassland improves soil carbon, nitrogen, and ecosystem multi-functionality in a subtropical karst region of southwest China".SCIENTIFIC REPORTS 14.1(2024).