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Hydrologic-induced concentrated soil nutrients and improved plant growth increased carbon storage in a floodplain wetland over wet-dry alternating zones

文献类型：期刊论文

作者Zhang, Quanjun1,3; Wang, Zhaosheng1; Xia, Shaoxia1; Zhang, Guangshuai2; Li, Suxiao1; Yu, Dingkun4; Yu, Xiubo1,3
刊名SCIENCE OF THE TOTAL ENVIRONMENT
出版日期2022-05-20
卷号822页码:10
关键词Wetland hydrological gradient Soil nutrients Plant community biomass Carbon storage Structural equation model
ISSN号0048-9697
DOI10.1016/j.scitotenv.2022.153512
通讯作者Yu, Xiubo(yuxb@igsnrr.ac.cn)
英文摘要Hydrological gradient variations in wetlands have a vital impact on wetland carbon storage. However, the mechanisms by which hydrological gradient variations affect biomass and carbon storage by regulating the soil nutrient contents and plant diversity remain unclear. This study attempted to explore these influencing mechanisms by studying the relationships between hydrological gradient variations and carbon storage in wetlands. The results showed that the average nutrient content, plant biomass and soil carbon content values in the high frequency wet-dry alternating zones (HFWA, zones where the frequency of water level occurs between - 25 cm and 25 cm greater than 0.5) were 1.4 times, 2.3 times and 0.43 higher, respectively, than those in the low-frequency wet-dry alternating zones (LFWA, zones where the frequency of water level occurs between - 25 cm and 25 cm less than 0.3). These results indicated that the HFWA zones had higher soil nutrients, higher plant dominance, higher biomass and higher soil carbon contents than the LFWA zones. The structural equation model revealed a significant positive correlation between wet-dry alternations and the soil nutrient-plant biomass-soil carbon relation in wetlands. Moreover, there was also a significant positive correlation between wet-dry alternations and the plant dominance-plant biomass-soil carbon relation in wetlands. This implied that the concentrated effect of HFWA on soil nutrients promotes plant growth, enhances plant dominance, promotes plant productivity, and enhances the capacities of plants to input carbon to the soil, thereby increasing the soil carbon content. This study closely linked wetland hydrological gradients, plant biodiversity and wetland carbon sequestration and profoundly revealed the mechanisms by which hydrological gradients in wetlands reg-ulate the concentrations of nutrient elements, thereby affecting vegetation growth and carbon sequestration; these results could provide a new cognitive basis for understanding the coupling of carbon and water.
WOS关键词FRESH-WATER WETLANDS ; SPECIES RICHNESS ; NITROGEN ; CLIMATE ; SEQUESTRATION ; GRASSLANDS ; GRADIENT ; RETENTION ; IMPACTS
资助项目National Natural Science Foundation of China[41971133] ; Strategic Priority Research Program of the Chinese Academy of Science, China[XDA23040203]
WOS研究方向Environmental Sciences & Ecology
语种英语
WOS记录号WOS:000766802100008
出版者ELSEVIER
资助机构National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Science, China
源URL[http://ir.igsnrr.ac.cn/handle/311030/172413]  
专题中国科学院地理科学与资源研究所
通讯作者Yu, Xiubo
作者单位1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China
2.Natl Marine Environm Monitoring Ctr, Dalian 116023, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Jiangxi Poyang Lake Natl Nat Reserve Author, Nanchang 330038, Jiangxi, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Quanjun,Wang, Zhaosheng,Xia, Shaoxia,et al. Hydrologic-induced concentrated soil nutrients and improved plant growth increased carbon storage in a floodplain wetland over wet-dry alternating zones[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2022,822:10.
APA Zhang, Quanjun.,Wang, Zhaosheng.,Xia, Shaoxia.,Zhang, Guangshuai.,Li, Suxiao.,...&Yu, Xiubo.(2022).Hydrologic-induced concentrated soil nutrients and improved plant growth increased carbon storage in a floodplain wetland over wet-dry alternating zones.SCIENCE OF THE TOTAL ENVIRONMENT,822,10.
MLA Zhang, Quanjun,et al."Hydrologic-induced concentrated soil nutrients and improved plant growth increased carbon storage in a floodplain wetland over wet-dry alternating zones".SCIENCE OF THE TOTAL ENVIRONMENT 822(2022):10.

入库方式： OAI收割

来源：地理科学与资源研究所

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