Abstract

Tong King delta is one of the been most densily populated area in Southeast Asia. However, the delta is vulnerable to natural disasters, Dykes have been constructed since 1000 years ago. More than the half of the country’s embankment system country exists in the Tong King delta. The delta has been intensively cultivated agriculture since the 10th century. Because natural disaster has serious effects on agricultural production in the Tong King delta, it is one of the obstacles for the economic development of Vietnam. In addition to the nature-caused coastal erosions, such as typhoon and ocean currents long history of human activities also caused the coastal erosion in the Tong King delta expansion of farmland, such as deforestation of the mangrove. Coastal erosion causes the soil erosion, soil salinity, and the bank collapsing, etc. Erosion damage is severe and well documented but the issue in the coastal line of Tong King delta is seldom addressed. In this paper, coastal erosion occurred in the Tong King delta was examined. Based on satellite images, interview and field observations, a map of area at risk and the probability of damage caused by coastal erosion was predicted.