Under Saihanwula Nature Reserve Different Vegetation Types In The Comparative Study Of Soil Physical And Chemical Properties

Saihanwula Nature Reserve is a typical feature of forest vegetation areas, broadleaf forests of East Asia Daxinganling boreal coniferous forest to grassland to forest in the double transition zone in North China flora to Xing'an flora transition zone,connecting the various flora and bridge bond,also an important source of the West Liaohe River Water Conservation land. Han Shan Nature Reserve in Saihanwula shady soil under different vegetation types for the study, Its physical and chemical properties were compared, the results are as follows:(1) the shady hillside of hanshan in Saihanwula nature reserve, With the elevation from low to high under different vegetation types, PH value is neutral or weak acid, it is the first decreases and then increase. Soil organic matter, soil total nitrogen content, Soil total potassium content, Effective nitrogen and soil available potassium, These index changes are the first increases and then decreases after. soil total potassium content,Soil Available phosphorus,Soil water content, Soil bulk density,Soil porosity and Soil mechanical composition,Their variation is not obvious .(2) The same vegetation type in the shady slopes of Hanshan, Divided into 0-20cm, 20-40cm,40-60cm ,60-80cm level research, With the deepening of the soil. Soil organic matter, soil total nitrogen content, Effective nitrogen, Soil water content, Soil porosity and Soil mechanical composition, their content decreased. Soil bulk density soil, PH value, Their content increased. Soil total potassium content, soil Available phosphorus, Soil total potassium content and soil available potassium, Their variation is not obvious .