GIS and RS Application for Land Use Status Quo Mapping in 2020 and Land Use Change Assessing in Thu Dau Mot City

Abstract

Effective land utilization and management will be an important foundation for economic and social development. In recent decades, information technology has developed rapidly and has been applied in all areas of life. However, the application of informatic technology, especially digital map system for professional purposes in land management at the commune level in Vietnam, is still limited. Thu Dau Mot city has a total natural land area of 11,890.58 ha, accounting for 4.41% of the total area of Binh Duong province. In recent years, the urbanization rate in Thu Dau Mot city is very high, every year, the fact that the area of agricultural land converted to non-agricultural is very large causes rapid changes in the reality of land use and pressures for management faced by the local government. With the aim of establishing land use status quo map in 2020 quickly, saving time and money for monitoring and evaluating land use changes over the past 5 years, this study is conducted. On the basis of inheriting the maps and data of the past years, processing remote sensing images and applying GIS software in combination with collecting field data, the map of current land use in 2020 is established, and changes of current land use in comparison with that of the year 2015 are assessed. Research results show that the area and percentage of main land use groups of Thu Dau Mot City by the end of 2020 are as follows: (1) Non-agricultural land group is 8929.53 ha (accounting for 75.10% of natural area of Binh Duong province), that area in 2015 is 7530.03 ha (63.33%), increasing an area of 1399.50 ha in 5 years (11.77%); (2) the group of agricultural land in 2020 is 2961.05 ha (24.90%) while that in 2015 is 3133.07 ha (26.35%), that means in 5 years agricultural land decrease an area of 172.02 ha (1.45%); and (3) the group of unused land is 0.00 ha (0.00%), in compared to 2015, that area is 1227.48 ha (10.32%), decreasing 1227.48 ha in 5 years (10.32%). The combination of GIS software with remote sensing images helps to create a land use status quo map effectively. The results of the research are the necessary information for the local government to ensure the sustainable use of land resources.