With China's rapid economic development,it is important to formulate reasonable and feasible tax and fee policies to promote the development and utilization of
Altitude is a useful indicator to examine patterns of forest structure and species diversity in relation to environmental factors.In this study,the altitude pat
Surface snow samples of different altitudes and snow pit samples were collected from Glacier No.1 at the Urumqi River Head,Tianshan.Denaturing gradient gel elec