The protected area is a transition zone from mountain to low mountain, with slow valley width, strait and horizontal streams at the bottom of the ditch, and a large number of paddy fields on both sides of the valley. The average annual climate is14.5℃, the coldest monthly average temperature is 2.1℃, and the extreme low temperature is minus9.7℃; the annual precipitation is 800 mm, and the precipitation in September accounts for 50% of the annual precipitation; Frost-free period 240 days.