Geographical environment of Yilan Balan River rafting

Balan River originates from the southern foot of Xiaoxing 'anling Mountain and is located in yilan county, east of Harbin, with a total length of 108km. At present, Balan River rafting 15km and Balan River source rafting 12km have been opened in the rafting area. Boating on the Balan River, you can appreciate the magic of nature, forget the noise of the city, and enjoy leisure and leisure.

Known as "the first drifting in northern China", Balan River rafting is located at the southern foot of Xiaoxing 'an Mountains and the hinterland of Danqinghe Scenic Area. It is formed by the convergence of mountain springs, running through the whole territory of Yinglan Korean nationality township and merging into Songhua River 2 kilometers away from Yilan Yinglan township. Yilan county is located in the eastern part of Eurasia in mid-latitude, and belongs to temperate continental monsoon climate, with distinct four seasons, obvious seasonal changes, obvious weather changes, great disparity in thirst and severe cold and summer; Spring is dry at low temperature, windy and rainy; Summer is warm and rainy; In autumn, the temperature drops quickly, and it is cool and early frost; Winter is cold and dry. Festivals in spring and winter are longer, while those in summer and autumn are shorter.

The annual average sunshine hours in yilan county are 2536.2 hours, and the annual average temperature is 3. 1-3.6℃, which is 0.5℃ lower in the north of Songhua River than in the south of Yangtze River. The frost-free period is about 14 1 day. The average snowfall in winter is 13.0mm, and the depth of snow is about 0.1m. The average precipitation is 555.6mm. The geological features of yilan county are as follows: The stratum is Precambrian Mesoproterozoic Heilongjiang Group.

The geological structure belongs to the second uplift belt of Xinhua Xia in the east of Heilongjiang Province, that is, the northern edge of Zhangguangcailing uplift. The geological tectonic movement in this area is intense, frequent and complex, and it is preliminarily divided into east-west and north-east structures. It is a Cathaysian or Cathaysian structure and a new Cathaysian structural system. The map is shaped like maple leaves and butterflies, surrounded by Zhangguang Cailing and Wanda Mountains in the southwest and east, and separated from other counties by Xiaoxing 'anling in the north. Surrounded by mountains (all above sea level150m). Generally speaking, the county is a basin-type semi-mountainous and semi-hilly area with high periphery and low middle.

The landform is characterized by undulating peaks, surrounded by muddy hills and plains; Deep valleys and depressions are bathed in river networks, and five mountains and one water divide the fields into four parts.