Development zone topography of Jilin Fengman Economic Development Zone

The terrain of the development zone is high in the west and low in the east, which belongs to the marginal zone of piedmont flood. The vertical and horizontal sections of the stratum change, and it is a mixture of banded rock debris and clay, which can be roughly divided into ten layers, such as cultivated soil, yellow clay, muddy loam, gravel mixed with clay and gravel, and the seismic intensity is fortified according to the seventh intensity zone. The whole region belongs to temperate continental monsoon climate, with southwest wind as the dominant wind direction throughout the year, dry and windy in spring, warm and rainy in summer, cool and sunny in autumn, and cold and northerly wind in winter, with annual average temperature of 3-5℃, annual average precipitation of 692.5mm and maximum frozen soil depth of 19cm. The lowest average temperature in January is generally-18℃-2℃, and the highest average temperature in July is generally-23℃. The frost-free period in mountainous areas is 12 days, which can reach 13-14 days in plain areas. The sunshine hours in the whole region are 2,4-2,6 hours, and the total annual radiation amount is 1,15 kcal/mm2.