Phosphorus sorption capacity in soils from freshwater restored coastal wetlands increased with restoration age

doi:10.1016/j.geoderma.2022.115926

	Phosphorus sorption capacity in soils from freshwater restored coastal wetlands increased with restoration age
	Xu, Gang1,4 ; Ren, Yuxuan 1; Yue, Mengyu 1; Lv, Yingchun 1; Chen, Xiaobing2 ; Hui, Haibin 3
发表期刊	GEODERMA
ISSN	0016-7061
	2022-09-15
卷号	422 页码:8
关键词	Phosphorus Freshwater restored wetland Phosphorus sorption capacity Eutrophication risk index Degree of P saturation
DOI	10.1016/j.geoderma.2022.115926
通讯作者	Xu, Gang(gxu126@foxmail.com)
英文摘要	Coastal wetlands, located at the intersection of land and sea, are considered to be a phosphorus (P) sink, source, and reactor in the global P cycle. However, the variation in P sorption capacity with wetland age and the related sorption mechanisms are not well understood. In this study, we collected the surface soil samples (0-20 cm) from 10 coastal freshwater wetlands that had been restored for 0-44 years surrounding China's Bohai Rim. Through a series of batch experiments, we studied the factors controlling P sorption and release in these soils. The results showed that the maximum P sorption capacity (Qmax) in these wetlands was 294-2447 mg kg(-1), with an average of 1472 mg kg(-1). The Qmax generally increased with increasing wetland restoration age. The degree of P saturation (DPS) and the P eutrophication risk index (ERI) for coastal wetlands were 0.5-9.5% and 0.9-21.1%, respectively. The DPS and ERI values did not vary significantly with wetland age. These data suggest that freshwater restoration significantly increases P sorption capacity, while not greatly affecting the P release potential in the coastal wetlands surrounding Bohai Rim. These observations may be related to the soil desalination and organic matter and amorphous Fe and/or Al accumulation that occur during the freshwater restoration of degraded wetlands. Coastal wetlands (especially restored wetlands) were suggested as P storage hotspots among upland, wetland, and offshore along the coastal watersheds of Bohai. These findings indicate that the freshwater restoration significantly improved the soil properties in the degraded coastal wetlands, and therefore increased P sorption capacity in the restored wetlands.
资助机构	National Natural Science Foundation of China ; Key Deployment Project of the Chinese Academy of Sciences ; Science and Technology Service Network Initiative
收录类别	SCI
语种	英语
关键词[WOS]	RIVER DELTA ; SEDIMENTS ; PHOSPHATE ; SALINITY ; EUTROPHICATION ; RECLAMATION ; REMOVAL ; RELEASE ; CARBON ; PH
研究领域[WOS]	Agriculture
WOS记录号	WOS:000802548500002
引用统计	被引频次：2[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.yic.ac.cn/handle/133337/31160
专题	中国科学院海岸带环境过程与生态修复重点实验室中国科学院海岸带环境过程与生态修复重点实验室_海岸带环境过程实验室
通讯作者	Xu, Gang
作者单位	1.Qufu Normal Univ, Sch Geog & Tourism, Rizhao 276826, Peoples R China 2.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China 3.Agrotech Serv Ctr Rizhao city, Rizhao 276826, Peoples R China 4.80 Yantai Rd, Rizhao, Peoples R China
推荐引用方式 GB/T 7714	Xu, Gang,Ren, Yuxuan,Yue, Mengyu,et al. Phosphorus sorption capacity in soils from freshwater restored coastal wetlands increased with restoration age[J]. GEODERMA,2022,422:8.
APA	Xu, Gang,Ren, Yuxuan,Yue, Mengyu,Lv, Yingchun,Chen, Xiaobing,&Hui, Haibin.(2022).Phosphorus sorption capacity in soils from freshwater restored coastal wetlands increased with restoration age.GEODERMA,422,8.
MLA	Xu, Gang,et al."Phosphorus sorption capacity in soils from freshwater restored coastal wetlands increased with restoration age".GEODERMA 422(2022):8.