Abstract
The growth of ash (Fraxinus mandshurica) in different mixed stands with larch (Larix gmelini), Korean pine (Pinus koralensis) and spruce (Picea koraiensis) had been investigated. Meanwhile, the relationship between the growth gain of mixed stand and topographic factor, and the growth comparison of ash in pure and mixed stands with different age-stages were presented in this paper. The results show that the effect of ash and larch mixed stand is very significant. The growth gain of ash in mixed stand on east slope is better than that on west. The growth effect is the most significant on east upper slope and on west down slope. The growth of ash can be increased significantly during different age-stages, but of Larch only through its occupying dominant position in above-ground competition.
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