Geographical environment of Sunwu County

Sunwu county is located at east longitude 126 40? - 128，48 59 N？ —49 42? Located in the north of Heilongjiang Province, in the middle of Heihe City, at the northern foot of Xiaoxing 'anling Mountain, it is connected to Aihui District of Heihe City in the north, wudalianchi city City in the south, Nenjiang County in the west and Xunke County in the east. It is an important transportation hub of Heihe City. The border line is 35 kilometers long and faces Konstantinovka in Amur, Russia across the Heilongjiang River. The total area of the county is 43 18.9 square kilometers. It is 500 kilometers away from Harbin, the provincial capital, and 1 10 kilometers away from Aihui District, Heihe City. It is one of the three major port cities and counties in Heihe City. Sunwu County is a hilly area with an altitude of 1 10-755 meters. The terrain is high in the south and low in the west, high in the north and low in the east, and gradually inclines from southwest to northeast. The landform is obviously divided into low mountain valleys in the west, hilly valleys in the middle and plain along the river in the northeast.

Sunwu County is located in Changbai Mountain Range, a comprehensive natural division of Daxing 'anling in China, at the northern foot of Xiaoxing 'anling. The ridge in the territory is about 40 kilometers long, and the mountainous area is composed of volcanic rocks and granite, both of which belong to the remnant veins of Xiaoxing 'an Mountains. There are *** 123 famous peaks in China, among which the main peak with obvious characteristics is Nansong Mountain, which is located at 2 1km north of Xiangyang Village, 7 km east and west, with geographical coordinates of 49 28' north latitude, 0/26 48' east longitude and an altitude of 753m, making it the highest peak in China. The foothills are surrounded by larches and covered with birch and pine trees. Lower plants only appear above 500 meters above sea level. Xiyangmushan: It is located at the west 1 1.5km of Gunshan Village, 7 km from east to west, with geographical coordinates of 4912' north latitude and 396m above sea level. The mountain is round and consists of Cretaceous sedimentary rocks. At an altitude of 320-340 meters, there is a platform slightly inclined to the north, on which tertiary loose gravel is piled up, which is called secondary planation plane. Poplar grows on the hillside, so it is named Ximushan, which is different from the poplar in China. Wuyun Mountain: located 4 kilometers southwest of Xingbei Township, 4 kilometers north-south, with geographical coordinates of 49 23' north latitude and12717' east longitude, with an altitude of 323.2 meters. This mountain is higher than other nearby mountains. In rainy weather, the top of the mountain is often connected with dark clouds, hence the name "Wuyun Mountain". The hillside is covered with secondary forests such as oak and birch. Three rocky mountains: located at the northwest of Hongqi Village 12km, with a length of 2km from north to south. Its geographical coordinates are 49 06' north latitude, 65,438+027 east longitude and 508 meters above sea level. There are three lying cattle stones on the top of the mountain, hence the name "Sanshi Mountain". The hillside is covered with secondary forests such as oak and birch. Shaojiashan: located in the northwest of Woniuhe Village, 14.5km, with a north-south direction of 7km. Its geographical coordinates are 49 37' north latitude, 65,438+026 57' east longitude and 493.9 meters above sea level. It is adjacent to Woniu River and its tributaries in the east, west and north, and to Xunhe River in the south. The hillside is covered with secondary forests such as oak and birch. By the end of 2008, 65,438+09 kinds of minerals have been discovered in Sunwu County, including coal, iron, copper, molybdenum, gold, graphite, crystal, zeolite, agate, building sand, metallurgical gangue, bentonite, clay for brick and tile, decorative basalt, diorite for building, decorative granite, perlite, slate for cement batching and peat. * * * There are 1 16 mineral deposits and occurrences (mineralization points), but less geological work has been invested, and only 9 deposits have reached the level of detailed investigation, including 2 placer gold deposits, 3 stone deposits, lignite deposits 1, bentonite deposits 1 and 2 molybdenum deposits.

The main characteristics of mineral resources are: there are few types of mineral resources found and their distribution is uneven; There are few minerals forming the deposit and the scale is small; Dominant minerals are not prominent. In the national zoogeographical division, the wild animals in Sunwu County belong to Changbai Mountain sub-region in the northeast of Palaearctic realm, and there are more than 300 species of wild animals in the territory, including more than 40 species of main animals, mainly including bears, wild boar, deer, roe deer, badger, lynx, weasel, otter and silver rat. There are more than 0/50 species of poultry/kloc-,most of which are pheasants, flying dragons, sand pheasants, tree pheasants and rod pheasants. There are 47 species of fish belonging to 1 1 family, not only carp, crucian carp, silver carp and grass carp, but also "three flowers and five Luo" (Australia China, bream, crucian carp, Zheluo, Faroe, Yarrow, Luo Hu and Tongluo) and salmon (Moho). The flora of Changbai Mountain is dominant, with more than 400 species. Medicinal plants include Fructus Schisandrae Chinensis, Radix Notoginseng, Radix Astragali, Radix Bupleuri, Bulbus Lilii, Radix Paeoniae Alba, Radix Platycodi, Radix Acanthopanacis Senticosi, Radix Codonopsis and Herba Taraxaci. The products with high economic value in Tuteshan are auricularia auricula, Lentinus edodes, Hericium erinaceus, hazelnut, blueberry, bracken and Osmunda japonica. It is an important production and distribution base of agricultural and sideline products in Heihe City.