The expert consultation method and analytic hierarchy process were adopted to establish a spruce forest plantation tending effect evaluation index system including target layer, rule layer and project layer.By calculating the weight and measuring the enhancing effective index to achieve a quantitative evaluation, an evaluation of the spruce forest plantation tending effect was made, and the results showed that rule layer in the stand structure was the largest weight in the effect evaluation, and its weight value was 0.340 8, followed by forest microclimate, whose weight was 0.300 9.The weights for the structure stability, light intensity, temperature, tree species composition of the project layer in the weight sorting order of the index evaluation system were 0.163 7, 0.152 7, 0.095 7 and 0.093 2 respectively.
spruce plantationtendingindex systemsubalpine areas in Gansu Province