Investigation on Site Type Division of Weihe River System and Selection of Afforestation Tree Species in Tianshui Area
The classification of site types refers to the analysis of the growth data of different vegetation types in a specific area un-der various geographical factors,and the summary of the growth conditions of Robinia pseudoacacia in the region under the influ-ence of different geographical factors.The research showed that the main factors affecting the artificial afforestation in this area are water conditions,and the restricting factors are slope direction and slope position in turn.At the same time,targeted systematic analy-sis of afforestation tree species in the Weihe River basin of Tianshui City provides scientific basis for the selection of afforestation tree species in this region in the future.
afforestationsite conditionstype divisionWeihe River basin