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Vietnam has more 3000km of coastline and the features of the coastal zone in various areas (Northeast area, Red River Delta, Central Region and Mekong River Delta) are also different. Therefore, it is necessary to study specific characteristics of each area and find out the suitable boundaries for the coastal zone. The legal basis related to Vietnam’s territorial sovereignty on the sea, the typical natural resources of the Quang Binh - Quang Tri - Thua Thien Hue coastal zone (Quaternary sand terraces, sand dunes, lagoons, sea grass, coral reef ), administrative organization, project ability, the capacity of data inheritance, and. | VNU Journal of Science Earth Sciences 26 2010 8-18 Scientific bases for defining the coastal zone of Quang Binh Quang Tri Thua Thien Hue provinces Nguyen Hieu Nguyen Cao Huan Dang Van Bao Hanoi University of Science VNU 334 Nguyen Trai Hanoi Vietnam Received 8 September 2010 received in revised form 15 October 2010 Abstract. Vietnam has more 3000km of coastline and the features of the coastal zone in various areas Northeast area Red River Delta Central Region and Mekong River Delta are also different. Therefore it is necessary to study specific characteristics of each area and find out the suitable boundaries for the coastal zone. The legal basis related to Vietnam s territorial sovereignty on the sea the typical natural resources of the Quang Binh - Quang Tri - Thua Thien Hue coastal zone Quaternary sand terraces sand dunes lagoons sea grass coral reef. administrative organization project ability the capacity of data inheritance and the experiences of successful ICZM projects in Vietnam and in the world all are scientific bases for defining the coastal zone of Quang Binh Quang Tri Thua Thien Hue provinces in general and the study area of project KC 09.08 06-10 in particular. The landward portion of the study area includes 206 communes of Quang Binh Quang Tri Thua Thien Hue provinces that have their entire or most area located east of the 25m contour line. The seaward boundary of the project study area is found mainly along the 30m isobath. The boundary is extended to the 50m isobath the limit of coral ecosystem distribution around Con Co Island. The total study area of the project KC 09.08 06-10 is 9 837 km sq. Keywords Coastal zone Integrated Coastal Zone Management Quang Binh Quang Tri Thua Thien Hue. 1. Introduction The coastal zone is a special and important part of the Earth s surface the contact place between the spheres lithosphere biosphere hydrosphere and atmosphere of the Earth but also the place that contains ecosystems with the highest productivity .
