RESEARCHING AND ZONING SOIL SALINIZATION RISK IN THE COASTAL PLAIN OF THUA THIEN HUE PROVINCE

Trương Đình Trọng, Nguyến Quang Việt

Abstract


The coastal plain of Thua Thien Hue province covers an area of 1,080 km2, which is susceptible to soil salinization due to significant impacts by climate change. In this study area with highly sensitive risk of soil salinization, about 6.290 hectares of saline soil scattered distribution tends to increase terrestrial areas in the next time. To assess and map risk of soil salinization, the authors chose 09 criteria including: annually average rainfall, annually average temperature, annually average evaporation, number of sunny hours, number of months of dry season, soil type, vegetation cover, density of river network, submerged areas following the strategies of sea level rise. The spatial data for determing criteria were processed by using GIS (Geographic Information System) and the Analytic Hierarchy Process (AHP) method. The study results show that the area with the high risk of soil salinization is about 16.4% of total area located in the coastal region of Phu Vang, Quang Dien and Phong Dien district.

References


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Department of Agriculture and Rural development of Phu Loc district, statistic report on land use status during period of 2000-2012, Thua Thien Hue.