干旱区生态环境知识资源中心(Arid): Factors governing the dynamics of soil organic carbon and nitrogen in wetlands undergoing management changes in a semi-arid region

Arid

DOI	10.1016/j.jenvman.2024.122005
	Factors governing the dynamics of soil organic carbon and nitrogen in wetlands undergoing management changes in a semi-arid region
	Li, Yifan; Zhang, Mingye; An, Yu; Wang, Le; Wang, Xuan; Tong, Shouzheng; Wu, Haitao; Jiang, Ming; Guo, Yue; Jiang, Li
通讯作者	An, Y
来源期刊	JOURNAL OF ENVIRONMENTAL MANAGEMENT
ISSN	0301-4797
EISSN	1095-8630
出版年	2024
卷号	367
英文摘要	Soil organic carbon and nitrogen play pivotal roles as indicators of soil quality and ecological functioning in wetlands. The escalating impact of human activities and climate change has led to a severe degradation of wetland soils, particularly in semi-arid regions. However, an understanding of the factors governing the dynamics of total soil organic carbon (TSOC) and total soil nitrogen (TSN) in semi-arid areas remains elusive, impeding a comprehensive understanding of wetland ecological functions. The present study investigated variations in TSOC and TSN content as well as vegetation and soil physicochemical properties under five different land management practices (mowed wetlands, mowed and slightly grazed wetlands, moderately grazed wetlands, heavily grazed wetlands, and natural wetlands unaffected by human interference) in the semi-arid Songnen Plain region of China. The results revealed significant decreases in TSOC and TSN content within managed wetlands compared to natural wetlands. Moreover, positive correlations were observed between pairs of SOC-TN or their storage values for SOC (TSOC)-TN (TSN). Furthermore, TSOC and TSN exhibited significant positive associations with aboveground and belowground biomass levels, stem C:N, stem C:P, soil C:P, and soil N: P. Additionally, redundancy analysis indicated that species diversity accounted for 37.4% of the variations in TSOC-TSN while belowground biomass accounted for 8.5% of the variations. Furthermore, nutrient content within stems (particularly N content and C:P) contributed to a 37.2% variation in TSOC and TSN whereas root nutrient content (especially N:P, C:N, and C:P) contributed to a 15.3% variation. Soil C:P, C:N, and total phosphorous (TP) content accounted for 65.7%, 9.6%, and 7.5% of variations of TSOC and TSN, respectively. Besides, variation partitioning analysis revealed that plant community characteristics, community nutrient content, and soil physicochemical properties collectively influenced the dynamics of TSOC and TSN. Among these factors, soil physicochemical properties emerged as the primary drivers of carbon and nitrogen dynamics in degraded wetlands in semi-arid regions. The impact on TSN was more pronounced than that of TSOC. This study provides valuable insights for understanding the processes and mechanisms underlying carbon and nitrogen accumulation in degraded wetlands, facilitating the development of regionally adaptive management plans under different management practices.
英文关键词	Carbon storage Management changes Marsh wetland Nitrogen storage Semi-arid region
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001284349300001
WOS关键词	PHOSPHORUS LIMITATION ; RIVER DELTA ; LONG-TERM ; CLIMATE ; TEMPERATE ; EMISSIONS ; ROOT ; STOICHIOMETRY ; DEGRADATION ; FERTILITY
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/404491
推荐引用方式 GB/T 7714	Li, Yifan,Zhang, Mingye,An, Yu,et al. Factors governing the dynamics of soil organic carbon and nitrogen in wetlands undergoing management changes in a semi-arid region[J],2024,367.
APA	Li, Yifan.,Zhang, Mingye.,An, Yu.,Wang, Le.,Wang, Xuan.,...&Jiang, Li.(2024).Factors governing the dynamics of soil organic carbon and nitrogen in wetlands undergoing management changes in a semi-arid region.JOURNAL OF ENVIRONMENTAL MANAGEMENT,367.
MLA	Li, Yifan,et al."Factors governing the dynamics of soil organic carbon and nitrogen in wetlands undergoing management changes in a semi-arid region".JOURNAL OF ENVIRONMENTAL MANAGEMENT 367(2024).