Ding 'an County is located between east longitude1107'-1031'and north latitude1913'-1944', and is located in the northeast of Hainan Province. On the south bank of the middle reaches of Nandu River, it borders Wenchang City in the east, qionghai city in the southeast and south, Tunchang in the southwest and west, Chengmai County in the northwest and Haikou City in the north and northeast. The county is 45.50 kilometers wide from east to west and 68 kilometers long from north to south, with a total area of 1 196.6 square kilometers.
As of 20 18, Ding 'an County governs 10 towns. According to the data of the seventh census, as of 0: 00 1 1 in June 2020, the permanent population of Ding 'an County was 284,690. Hainan East Ring Expressway runs through the east of Dingcheng Town, and Yu Haidong Line and Middle Line Highway run through the whole territory.
topography
The landform of Ding 'an County is irregular, long from north to south and narrow from east to west. The terrain gently slopes from south to north, forming a trend of high in the south and low in the north, and gradually drops from the highest point of 5 12.70 meters above sea level to the lowest point 15.20 meters. There are various types of landform changes in the county and their causes are different. There are terraces and residual hills formed by sand shale, basalt, volcanic ash and granite, as well as flat terraces formed by shallow sea sediments and river alluvium.
The hills in the south, west and southeast rise and fall. The southern part of Niuling Mountain is bounded by the south, with Jiafengling and Xipoling in the west and Wugailing in the east forming high hills (250-500m above sea level) and low hills (0/00-250m above sea level). Most of the northern part is a flat terrace (below 50 meters above sea level), and Jinjiling stands in the northern part of the central part, forming the landform of staggered residual hills and platforms.
Reference to the above content: Baidu Encyclopedia-Ding 'an County