Abstract: In this paper, the planted Picea asperata forest, a typical mode of transforming the low benefit ecological public welfare Populus forest in the Huajialing loess hilly region, was investigated and researched, and the community structure of the Picea asperata Mast.forest in the western, centraleastern and southern parts of the study area was analyzed. The results are as follows: ① The community structure of the planted Picea asperata Mast.forest in the study area was simple, and there was a negative correlation between the structural parameters of arborous layer and of shrub and herbaceous layers; ② The Picea asperata Mast.forest was dominated by young trees with low height and small DBH. Affected by the site conditions, there was a big difference in DBH and height of Picea asperata Mast.trees, and the Picea asperata Mast.forest in the centraleastern part grew better than that in the western and southern parts; ③ Growth of the planted Picea asperata Mast.forest was repressed by the high planting density, the proportion of pure forest was too high, and these were disadvantageous for sustainable development of ecological public welfare forest in the loess hilly region.

Key words: