Effects of groundwater tables and salinity levels on soil organic carbon and total nitrogen accumulation in coastal wetlands with different plant cover types in a Chinese estuary

Groundwater tables and soil salinity can greatly affect the biogeochemical cycles of carbon and nitrogen by altering soil physicochemical properties. Coastal wetlands with different plant cover types (including bare land, Phragmites australis, and Suaeda salsa wetlands) and groundwater table wetland...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Yanan Guan, Junhong Bai, Junjing Wang, Wei Wang, Xin Wang, Ling Zhang, Xiaowen Li, Xinhui Liu
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Groundwater table Soil organic carbon Total nitrogen Electric conductivity Lorentz model General linear model Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/b47ad104398d49d3a3539154dbcfe552
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:b47ad104398d49d3a3539154dbcfe552
record_format	dspace
spelling	oai:doaj.org-article:b47ad104398d49d3a3539154dbcfe5522021-12-01T04:31:10ZEffects of groundwater tables and salinity levels on soil organic carbon and total nitrogen accumulation in coastal wetlands with different plant cover types in a Chinese estuary1470-160X10.1016/j.ecolind.2020.106969https://doaj.org/article/b47ad104398d49d3a3539154dbcfe5522021-02-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S1470160X20309080https://doaj.org/toc/1470-160XGroundwater tables and soil salinity can greatly affect the biogeochemical cycles of carbon and nitrogen by altering soil physicochemical properties. Coastal wetlands with different plant cover types (including bare land, Phragmites australis, and Suaeda salsa wetlands) and groundwater table wetlands (including low groundwater table, medium groundwater table, and high groundwater table wetlands) were investigated in 2012–2013 to characterize the spatial and temporal changes and the effects of groundwater tables on soil organic carbon (SOC) and total nitrogen (TN) in the Yellow River Estuary, China. The results showed that SOCs in 2012 was higher than that in 2013 regardless of the groundwater tables, while TNs was higher in 2013 than in 2012 except in the BL soil with low groundwater tables and the PA wetlands with middle groundwater tables. The SOCs and TNs were mainly concentrated in the top 20 cm soils. SOCc and TNc were fitted very well with soil depth by the general linear fit (p < 0.01). The Lorentz models were ideal for the relationships among SOC, TN and electrical conductivity (EC), indicating that certain EC values could improve carbon and nitrogen accumulation. The theoretical threshold of EC for the maximum SOC and SOCs was 2.2 ms/cm, and the maximum TN and TNs highly depended on groundwater tables (0.9–1.0 ms/cm for LW, 1.6–1.8 ms/cm for MW and 3.0 ms/cm for HW). The general linear model results showed that SOC was positively correlated with TN at the same groundwater table (p < 0.01). Additionally, a positive linear relationship was also observed among SOC, TN and silt + clay contents for all groundwater tables (p < 0.05). These findings indicated that carbon and nitrogen stocks might be regulated by groundwater tables and salinity to improve carbon sinks in coastal wetlands.Yanan GuanJunhong BaiJunjing WangWei WangXin WangLing ZhangXiaowen LiXinhui LiuElsevierarticleGroundwater tableSoil organic carbonTotal nitrogenElectric conductivityLorentz modelGeneral linear modelEcologyQH540-549.5ENEcological Indicators, Vol 121, Iss , Pp 106969- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Groundwater table Soil organic carbon Total nitrogen Electric conductivity Lorentz model General linear model Ecology QH540-549.5
spellingShingle	Groundwater table Soil organic carbon Total nitrogen Electric conductivity Lorentz model General linear model Ecology QH540-549.5 Yanan Guan Junhong Bai Junjing Wang Wei Wang Xin Wang Ling Zhang Xiaowen Li Xinhui Liu Effects of groundwater tables and salinity levels on soil organic carbon and total nitrogen accumulation in coastal wetlands with different plant cover types in a Chinese estuary
description	Groundwater tables and soil salinity can greatly affect the biogeochemical cycles of carbon and nitrogen by altering soil physicochemical properties. Coastal wetlands with different plant cover types (including bare land, Phragmites australis, and Suaeda salsa wetlands) and groundwater table wetlands (including low groundwater table, medium groundwater table, and high groundwater table wetlands) were investigated in 2012–2013 to characterize the spatial and temporal changes and the effects of groundwater tables on soil organic carbon (SOC) and total nitrogen (TN) in the Yellow River Estuary, China. The results showed that SOCs in 2012 was higher than that in 2013 regardless of the groundwater tables, while TNs was higher in 2013 than in 2012 except in the BL soil with low groundwater tables and the PA wetlands with middle groundwater tables. The SOCs and TNs were mainly concentrated in the top 20 cm soils. SOCc and TNc were fitted very well with soil depth by the general linear fit (p < 0.01). The Lorentz models were ideal for the relationships among SOC, TN and electrical conductivity (EC), indicating that certain EC values could improve carbon and nitrogen accumulation. The theoretical threshold of EC for the maximum SOC and SOCs was 2.2 ms/cm, and the maximum TN and TNs highly depended on groundwater tables (0.9–1.0 ms/cm for LW, 1.6–1.8 ms/cm for MW and 3.0 ms/cm for HW). The general linear model results showed that SOC was positively correlated with TN at the same groundwater table (p < 0.01). Additionally, a positive linear relationship was also observed among SOC, TN and silt + clay contents for all groundwater tables (p < 0.05). These findings indicated that carbon and nitrogen stocks might be regulated by groundwater tables and salinity to improve carbon sinks in coastal wetlands.
format	article
author	Yanan Guan Junhong Bai Junjing Wang Wei Wang Xin Wang Ling Zhang Xiaowen Li Xinhui Liu
author_facet	Yanan Guan Junhong Bai Junjing Wang Wei Wang Xin Wang Ling Zhang Xiaowen Li Xinhui Liu
author_sort	Yanan Guan
title	Effects of groundwater tables and salinity levels on soil organic carbon and total nitrogen accumulation in coastal wetlands with different plant cover types in a Chinese estuary
title_short	Effects of groundwater tables and salinity levels on soil organic carbon and total nitrogen accumulation in coastal wetlands with different plant cover types in a Chinese estuary
title_full	Effects of groundwater tables and salinity levels on soil organic carbon and total nitrogen accumulation in coastal wetlands with different plant cover types in a Chinese estuary
title_fullStr	Effects of groundwater tables and salinity levels on soil organic carbon and total nitrogen accumulation in coastal wetlands with different plant cover types in a Chinese estuary
title_full_unstemmed	Effects of groundwater tables and salinity levels on soil organic carbon and total nitrogen accumulation in coastal wetlands with different plant cover types in a Chinese estuary
title_sort	effects of groundwater tables and salinity levels on soil organic carbon and total nitrogen accumulation in coastal wetlands with different plant cover types in a chinese estuary
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/b47ad104398d49d3a3539154dbcfe552
work_keys_str_mv	AT yananguan effectsofgroundwatertablesandsalinitylevelsonsoilorganiccarbonandtotalnitrogenaccumulationincoastalwetlandswithdifferentplantcovertypesinachineseestuary AT junhongbai effectsofgroundwatertablesandsalinitylevelsonsoilorganiccarbonandtotalnitrogenaccumulationincoastalwetlandswithdifferentplantcovertypesinachineseestuary AT junjingwang effectsofgroundwatertablesandsalinitylevelsonsoilorganiccarbonandtotalnitrogenaccumulationincoastalwetlandswithdifferentplantcovertypesinachineseestuary AT weiwang effectsofgroundwatertablesandsalinitylevelsonsoilorganiccarbonandtotalnitrogenaccumulationincoastalwetlandswithdifferentplantcovertypesinachineseestuary AT xinwang effectsofgroundwatertablesandsalinitylevelsonsoilorganiccarbonandtotalnitrogenaccumulationincoastalwetlandswithdifferentplantcovertypesinachineseestuary AT lingzhang effectsofgroundwatertablesandsalinitylevelsonsoilorganiccarbonandtotalnitrogenaccumulationincoastalwetlandswithdifferentplantcovertypesinachineseestuary AT xiaowenli effectsofgroundwatertablesandsalinitylevelsonsoilorganiccarbonandtotalnitrogenaccumulationincoastalwetlandswithdifferentplantcovertypesinachineseestuary AT xinhuiliu effectsofgroundwatertablesandsalinitylevelsonsoilorganiccarbonandtotalnitrogenaccumulationincoastalwetlandswithdifferentplantcovertypesinachineseestuary
_version_	1718405864812969984

Effects of groundwater tables and salinity levels on soil organic carbon and total nitrogen accumulation in coastal wetlands with different plant cover types in a Chinese estuary

Ejemplares similares