...阴阳坡；太阳辐射 [gap=1333]Key words： soil mechanics； roadbed in permafrost regions； roadbed strikes； sunny slope and shady slope； solar ...
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The key techniques were presented as follows: (1) Planting site should be selected in the sunny slope instead of in the shady slope and hill gully.
提出了其关键技术措施为：（ 1 ）植地应选在阳坡，忌种在阴坡和山窝；
It was larger in sunny slope than in shady slope under the similar density, and the index gap between different slope increased with the increase of stand density.
叶面积指数随林分密度的增加而增加，在相同密度条件下阳坡的叶面积指数大于阴坡，且密度愈大两者相差愈大。
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