alpine soil
5.The paper researched the soil water effect across measuring the physical characters of soil water in Pailugou watershed in Qilian Mountains forest ecology monitoring station belonging to the state key field scientific experimental station. The result shows:(1)The water holding capacity of sub-alpine shrub meadow soil is best and aerate well and then forest gray-brown soil with best aeration, chestnut soil has little water holding capacity and bad aeration;
6.This research is used HNO3、 HCl-HNO3,NHO3-H2SO4-HClO4 and HCl-HNO3-HF-HClO4 for the digestion red earth, loessial soil, alpine steppe and subalpinc steppe soil,and determined for the Pb、 Cr、 Ni、 Cd、 Mn、 Cu、 Zn by AAS. Comparision of the results of these digestion indicates that the digestion with HCl-HNO3-HF-HClO4is the best method.
8.The results show that 59 types of plant communities in the alpine tundra of Mt.Changbai were basically arranged along a soil-water gradient of the second axis in DCA ordination and could be classified into 12 groups by TWINSPAN.
