Impacts of evaporation and inundation on near-surface salinity at a coastal wetland park

Zheng，Wenjuan1; Yang，Zhenlei2; Wang，Xiaoxuan3; Wang，Hailong3,4; Yu，Xuan3,4; Wang，Lian Ping1; He，Bin5

2022-12-01

10.1016/j.marpolbul.2022.114373

MARINE POLLUTION BULLETIN   Impact Factor & Quartile

0025-326X

1879-3363

Salinization is one of the main causes of conversion between different ecosystems and landuse functions in coastal wetlands. In this paper, we studied the spatiotemporal dynamics of soil moisture and salinity in a reclaimed national wetland park in Guangdong Province, China. We found that diel evaporation affected soil water up to 40 cm deep. Extreme rainfall only increased topsoil moisture with limited leaching effects on soil salinity. Salt accumulation occurred between 40 and 70 cm depth in rainy season, lasting until the end of monitoring period. Whereas the topsoil was salinized between land-surface to 30 cm deep in dry season, which was recovered after rainfall. This result suggested that the force balance between capillarity and gravity created a relative stable saline layer which was not flushed out during inundation. Therefore, considering these site-specific features could lead to the improved understanding of the migration of salinity in the soil profiles.

Electrical conductivity Evaporation Groundwater Rainfall Soil salinity Unsaturated zone Wetland

SCI

English

First

Guangdong Science and Technology Department[2019ZT08G090];National Natural Science Foundation of China[41907008];

Environmental Sciences & Ecology ; Marine & Freshwater Biology

Environmental Sciences ; Marine & Freshwater Biology

WOS:000921167800004

PERGAMON-ELSEVIER SCIENCE LTD

ENVIRONMENT/ECOLOGY

2-s2.0-85142308076

Scopus

1.Center for Complex Flows and Soft Matter Research,Department of Mechanics and Aerospace Engineering,Southern University of Science and Technology,Shenzhen,518055,China
2.Key Laboratory of Coastal Environment and Resources of Zhejiang Province,School of Engineering,Westlake University,Hangzhou,310024,China
3.Center for Water Resources and Environment,School of Civil Engineering,Sun Yat-sen University,Guangzhou,510250,China
4.Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai),Zhuhai,519082,China
5.Institute of Eco-Environmental and Soil Sciences,Guangdong Academy of Sciences,Guangzhou,510650,China

Zheng，Wenjuan,Yang，Zhenlei,Wang，Xiaoxuan,et al. Impacts of evaporation and inundation on near-surface salinity at a coastal wetland park[J]. MARINE POLLUTION BULLETIN,2022,185.

Zheng，Wenjuan.,Yang，Zhenlei.,Wang，Xiaoxuan.,Wang，Hailong.,Yu，Xuan.,...&He，Bin.(2022).Impacts of evaporation and inundation on near-surface salinity at a coastal wetland park.MARINE POLLUTION BULLETIN,185.

Zheng，Wenjuan,et al."Impacts of evaporation and inundation on near-surface salinity at a coastal wetland park".MARINE POLLUTION BULLETIN 185(2022).