tailieunhanh - Báo cáo " Building land unit database for supporting land use planning in Thai Binh Province by integrating ALES and GIS "

In order to ensure the effectiveness of land use planning, the information about land quality and land characteristics plays an important role. The application of information technology is one of the best solutions in the area of land use planning in which land unit database is considered firstly and seriously. The land unit database consists of spatial data and attribute data, both of which should follow the standard. The paper presents a procedure to build the land unit database, and illustrates an application of the database to land suitability classification for paddy field and crop in Thai Binh Province. | VNU Journal of Science Earth Sciences 24 2008 153-159 Building land unit database for supporting land use planning in Thai Binh Province by integrating ALES and GIS Nhu Thi Xuan Dinh Thi Bao Hoa College of Science VNU Received 5 November 2008 received in revised form 25 November 2008 Abstract. In order to ensure the effectiveness of land use planning the information about land quality and land characteristics plays an important role. The application of information technology is one of the best solutions in the area of land use planning in which land unit database is considered firstly and seriously. The land unit database consists of spatial data and attribute data both of which should follow the standard. The paper presents a procedure to build the land unit database and illustrates an application of the database to land suitability classification for paddy field and crop in Thai Binh Province by comparing land unit with the requirement of each land use type according to ecology characteristic. Keywords ALES and GIS Land suitability Land unit database. 1. Introduction Thai Binh Province is located in the Red River Delta. The province is close to the northern focus economic triangle Hanoi - Hai Phong - Quang Ninh and it is also a commercial exchange gate between Hai Phong Quang Ninh and coastal provinces across the country. Covering an area of about 1 535 km2 Thai Binh makes up of total area of Vietnam. The province borders on the Gulf of Tonkin in the east Nam Dinh and Ha Nam provinces in the west and southwest and Hai Duong Hung Yen and Hai Phong City in the north. The terrain is flat with slope less than 1 stiffing from north to south. Elevation varies from 1 to 2 m above mean sea level. Average annual temperature of the area is . Total Corresponding author. Tel. 84-913083269. E-mail xuannhu1954@ annual radiation is quite high. The average annual rainfall ranges from 1600 to 2000 mm. Rainy season lasts from April to October and dry season from