Changes Of Hydrological Environment And Their Influences On Coastal Wetlands InThe Southern Laizhou Bay, China |
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Authors: | Xuliang Zhang Yuanzhi Zhang Hongxia Sun Dongxing Xia |
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Affiliation: | (1) College of Marine Geosciences, Ocean University of China, Qingdao, 266003, China;(2) Department of Geography, Qingdao University, Qingdao, 266071, China;(3) Helsinki University of Technology, Laboratory of Space Technology, FIN-02015 HUT, Helsinki, Finland;(4) First Institute of Oceanography, State Oceanic Administration, Qingdao, 266061, China |
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Abstract: | The structure and function of the coastal wetland ecosystem in the southern Laizhou Bay have been changed greatly and influenced by regional hydrological changes. The coastal wetlands have degraded significantly during the latest 30 years due to successive drought, decreasing of runoff, pollution, underground saline water intrusion, and aggravating marine disasters such as storm tides and sea level rising. Most archaic lakes have vanished, while artificial wetlands have been extending since natural coastal wetlands replaced by salt areas and ponds of shrimps and crabs. The pollution of sediments in inter-tidal wetlands and the pollution of water quality in sub-tidal wetlands are getting worse and therefore “red tides” happen more often than before. The biodiversity in the study area has been decreased. Further studies are still needed to protect the degraded coastal wetlands in the area. |
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Keywords: | southern Laizhou Bay hydrological environment coastal wetlands degradation ecological restoration rehabilitation |
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