Abstract: The niche characteristics were studied in natural vegetation recovery process in sloping-land with purple soils in Hengyng Basin.The results showed that:(1)The niche breadth of most populations was narrow,only three populations’ horizontal niche breadth was larger than 0.5;(2)The height niche was also narrow,,height niche breadth of the most populations(84.5%) was 0.1-0.3,which implied the useness to the perpendicular space was not sufficient; (3)There existed horizontal niche overlaps among 78.00% of the pairs of the populations although the niche overlap value was low,which implied the share trend to all resources was obvious,and the degree of share was high;(4)There existed height niche overlaps among all populations,which implied the degree of share to all resources was violent;(5)The horizontal niche percentage similiarity between the pairs of populations was low,and the height niche percentage similiarity between the pairs of populations was high,which implied those populations shared the like height ecological resources dominated by light.