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第三章 海岸带 1 海岸带的概念和类型划分

第三章 海岸带 1 海岸带的概念和类型划分. Coastal domain from 200 m above to 200 m below sea level Occupies 18% of the surface of the globe Is the area where around a quarter (1/4) of global primary productivity occurs

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第三章 海岸带 1 海岸带的概念和类型划分

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  1. 第三章 海岸带1 海岸带的概念和类型划分 • Coastal domain from 200 m above to 200 m below sea level • Occupies 18% of the surface of the globe • Is the area where around a quarter (1/4) of global primary productivity occurs • Where two thirds (2/3) of the worlds cities with populations of over 1.6 million people are located • Where around 60% of the human population lives • Supplies approximately 90% of world fish catch

  2. Human activity leaves great pressure on the coast zone environment:vulnerable area脆弱地区 脆弱的海岸带

  3. Biodiversity生物多样性 Biodiversity is a main feature of coastal zone, which supports human life. Neritic and littoral lives

  4. Cross section of a typical coastal zone

  5. Coastal zones are areas of rapid geologic change located within the area of tidal influence. Coastal zones are composed of 1) estuaries河口 and bays海湾, 2) wetlands湿地made up of tidal marshes, tidal flats, and tidal channels, 3) and beaches海滩 and barrier islands障壁岛.

  6. Costal zone features

  7. 中国海岸带调查的划分 • 内界：海岸线向陆15 km • 外界：15m等深线 • LOICZ的划分

  8. 海岸分类

  9. 海岸类型 • 砂质海岸 • 淤泥质海岸 • 岩石海岸 • 生物海岸

  10. Kwanghwa Island – tidal flat and beachKorea, 2002.11 泥质海岸砂质海岸

  11. Sand dune in coastal zone Qinghuangdao, 2002.9

  12. 基岩海岸

  13. 泥质潮坪海岸

  14. 红树林海岸

  15. Mekong River Delta

  16. Mekong River Delta

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