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Geoscience ›› 2025, Vol. 39 ›› Issue (02): 447-455.DOI: 10.19657/j.geoscience.1000-8527.2024.125

• Monitoring, Modeling and Assessment of Supergene Resources • Previous Articles     Next Articles

Multi-dimensional Drivers of Wetland Evolution in the Yellow River Delta Since 1980 and Sustainable Management Strategies

BA Yinji1,2(), PANG Guotao1, LIU Xiaohuang2,3, DOU Wenjun1,2,4(), LI Chuang5, GAO Jinhua1, MA Ruqiang1   

  1. 1. Yantai Center of Coastal Zone Geological Survey,China Geological Survey, Yantai, Shandong 264001, China
    2. Key Laboratory of Natural Resource Coupling Process and Effects, Beijing 100055, China
    3. Natural Resources Comprehensive Survey Command Center, China Geological Survey, Beijing 100055, China
    4. Ministry of Natural Resources Observation and Research Station of Land-Sea Interaction Field in the Yellow River Estuary, Yantai, Shandong 264001, China
    5. Offshore Oil Engineering Co., Ltd, Tianjin 300011, China
  • Online:2025-04-10 Published:2025-05-08
  • Contact: DOU Wenjun

Abstract:

The Yellow River Delta wetland is the largest and most well-preserved wetland in the Yellow River Basin.However, issues such as soil salinization and fragile ecological environment caused by seawater intrusion have not been completely resolved, necessitating further strengthening of monitoring and research on relevant resource and environmental indicators of wetland resources.This study takes the modern Yellow River Delta wetland as the research area and employs a combination of remote sensing interpretation and soil and vegetation surveys to systematically analyze the wetland resources of the Yellow River Delta.The study quantitatively analyzes the changes in wetland area since 1980 and the influencing factors of wetland resource evolution, and proposes scientific protection and restoration strategies.The results show that: (1) The wetland area has shown a trend of first decreasing and then increasing.Before 2000, the wetland area decreased, and it began to increase after 2000.The center of gravity of wetland area changes shifted from the southeast to the northwest.(2) The evolution of wetland resources is driven by a combination of factors, including Yellow River runoff, sediment load, and precipitation.With the reduction of Yellow River water supply, the water cycle of the Yellow River Delta wetland is in a precarious situation.Human industrial activities have a significant impact on wetlands, but the establishment of nature reserves has played a positive role in the protection and restoration of wetland resources.(3) The soil salinity variation during the evolution of wetland resources shows that soil salinity decreases from the coast to the inland, and the influence of groundwater on soil salinity increases with depth.Combined with the study of wetland vegetation distribution characteristics, it is further confirmed that soil and water salinity changes are important factors affecting the structure of wetland vegetation communities.Yellow River runoff, sediment transport, and human activities are the driving factors of wetland resource evolution.Therefore, suggestions for rational water and sediment regulation, protection and utilization, and publicity and education are proposed to support the protection and restoration of Yellow River Delta wetland resources.

Key words: survey and observation, vegetation, soil, human activity, delta wetland, Yellow River

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