Analysis on factors affecting net primary productivity distribution in Changbai Mountain based on process model for landscape scale Simulation of temporal-spatial variation characteristics of surface runoff in Changbai Mountain based on process model for landscape scale Ecosystem productivity process model for landscape based on remote sensing and surface data Influence of road utilization on plant and soil in road effect zone in Changbai Mountain Natural Reserve Spatial scaling of net primary productivity based on process model in Changbai Mountain Natural Reserve Characteristics of plant species diversity in a windthrow area on Changbai Mountain after 26 years of natural recovery