Dunhua feature

Dunhua terrain is high around and low in the middle, with an average elevation of 756 meters in the territory. Dunhua City is located at the west foot of Changbai Mountain, which belongs to Yanbian Korean Autonomous Prefecture and lives in the west of Yanbian Korean Autonomous Prefecture. It is located at127 28'-12917' east longitude and 42 42'-44 30' north latitude. The total area of Dunhua City is 1 1957 square kilometers. Dunhua City is bounded by Harba Ridge, and is adjacent to Wangqing County, Longjing City and Antu County in the east and southeast.

1, topographic features

Dunhua terrain is high around and low in the middle, with an average elevation of 756 meters in the territory. Dunhua City is located at the west foot of Changbai Mountain, which belongs to Yanbian Korean Autonomous Prefecture and lives in the west of Yanbian Korean Autonomous Prefecture. It is located at127 28'-12917' east longitude and 42 42'-44 30' north latitude. The total area of Dunhua City is 1 1957 square kilometers. Dunhua City is bounded by Harba Ridge, and is adjacent to Wangqing County, Longjing City and Antu County in the east and southeast. The east and northeast are bounded by Xiaogouling, which is connected with Ning 'an City and hailin city City in Heilongjiang Province. Songhua River in the south is adjacent to Fusong County by two roads; It is bounded by Zhangguangcailing in the west and connected with huadian city and jiaohe city. The northwest is bordered by Zhangguangcailing and shangzhi city, Heilongjiang Province.

2. Climate characteristics

Dunhua City belongs to the cool climate zone in the middle temperate zone, and the climate characteristics in mountainous areas are obvious. The annual average temperature is 2.9℃ and the annual average rainfall is 550-630mm. Effective accumulated temperature is 2400-2500 degrees, and frost-free period is 1 10- 120 days.

3. Characteristics of natural resources

37 kinds of underground mineral deposits have been discovered in China, and the proven resource reserves are 15 kinds. Among them, iron is 65.438+500 million tons, phosphorus (associated) is 27.92 million tons, coal is 6.5438+0.9 million tons, diatomite is 3.26 million tons, peat is 6.5438+0043 million tons, vanadium is 3.29 million tons, and molybdenum is 6.5438+0.1. Marble for decoration is 29.86 million cubic meters, granite for decoration is 6.5438+0.7 million cubic meters, and mineral water is 6.5438+0.3594 cubic meters/day. Four mineral water resources have been developed, among which Yuquan mineral water in Qiu Li ditch is a rare natural calcium bicarbonate mineral water in the world, which is rich in various elements needed by human body. The Nanshan olivine gem mine in Jizongsong is the largest olivine mine in the world at present.