| Recent years, with the quick development of highways in our country.in course of construction, plentful of excavation , discarded soil and residue, brought a lot of bare slopes, destroyed original plant and ecological systemof primary and leaded up to serious soil erosion and water loss and the unbalance of ecological environment.In nature factors, vegetation have very important meaning for the recovery and restoration of ecological environment. Trough investigating nature peculiarity and plants of national road 109,which crosses Mentougou from east to west,combined with the climate, geography and the peculiarity of the side-slopes in mountainous area,we study the plant selection for afforesting road side-slope in Mentougou area.Analytic Hierarchy Process are applied to build selected system suited for climate of Mentougou and evaluvate the plant along the road comprehensively. Nineteen excellent herb, ten bushe and eight tall trees are chosed for vegetation of road side-slopes. At the basis of studying interspecific association of 37 plants,scientific disposal between two trees are suggested; finally, aproprate ground type for plant are stated from altitude,aspect of slope ,position of slope and side-slope type,by cluster analyzing the in-vestgated samples. |
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