最佳森林覆盖率
the optimum forest coverrate
高寒高海拔地区
high altitudes and cold region
high-cold and high-altitude area
高寒区
The cold areas
Cold area
High and cold area
frigid area
high altitude and cold climate areas
高森林火险期
high-risk forest-fire period
寒区高等级公路
High-grade highway in cold area
华北高寒区
Cold region of North China
单独林森林费用价
Cost value of forest of a single stand
单独林森林期望价
atrazine-contaminated soil