Climate of Xilingol prairie

Xilingol Grassland is a part of Inner Mongolia Plateau, with relatively flat and open terrain, and the usable area of high-quality natural grassland is 6,543,800 square kilometers. Its terrain inclines from southeast to northwest, with many low hills in the southeast, sporadic basins and flat terrain in the northwest, with some low hills and lava platforms scattered in between. The northeastern part is Wuzhumuqin Basin, with dense river network and abundant water resources. Hunshandake sandy land in southwest China is composed of a series of ridge sand belts, mostly fixed and semi-fixed sand dunes. It is 800- 1200m above sea level, cold and windy and dry, with an annual average temperature of 1-2℃ and a frost-free period of 90- 120 days. The annual precipitation from northwest to southeast is 150-400 mm, which belongs to the semi-arid continental monsoon climate in the middle temperate zone. Xilin Gol League has four distinct seasons, the temperature rises rapidly in spring, and it is windy, windy and rainy. It is cool and rainy in summer, and the rainfall variability is large; In autumn, the weather is cool, sunny, windy and the climate is stable; Winter is long and cold, and the total snowfall is generally10-20 mm. There are many rivers and lakes in Xilin Gol League. Most of the rivers are inland rivers, including Wulagai River, Balagen River, Xilingol River and Gogol River. The outflow river has Luanhe River system. There are 1363 lakes embedded in the vast grassland, with a total storage capacity of 3.5 billion cubic meters, including 672 freshwater lakes with a storage capacity of 2 billion cubic meters. There are four major lakes: Wulagai Lake, Chagannaoer Lake, Baiyinkulenor Lake and Haoletuyinuoer Lake.