Relationship between Growth of Pinus Sylvestris var.mongolica and Weather,Soil in Zhanggutai Area

This article analyzed the main factor for successive years high growth of Pinus sylvestris var.mongolica by using the analyzing method of returning to return gradually,thinking successive years high growth of Pinus sylvestris var.mongolica have more closely relation with wood's age,averages declining the water measures from April to June and layers of keeping the water measures of 0-20cm in the beginning of growing.The soil humidity influence growth of Pinus sylvestris var.mongolica by influenceing the strength of steam and the photo-synthesis,having the stronger steaming and the photo-synthesis in a low ground.