Survival of natural and planted seedlings under a shelterwood in southwest Oregon

Survival of natural and planted seedlings under a shelterwood in southwest Oregon
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俄勒冈州西南部防护林下自然和种植幼苗的生存

DOI：
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发表时间：
1982
期刊：
影响因子：
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通讯作者：
Werner K. Bruckner
Werner K. Bruckner
中科院分区：
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文献类型：
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作者：
O. T. Helgerson;K. A. Wearstler;Werner K. Bruckner

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自然遮荫的微型站点对 天然林和人工林的成活率和高生长量 幼苗进行了评价后，最初的防护林 在西斯基尤山脉东部的收获， 俄勒冈州西南部。两年后， 人工种植花旗松的成活率（84 %）和黄松（56%） 明显高于天然花旗松（13%）和白色冷杉（18 %）。炎热和干旱的压力是 种植和种植的最大死亡原因 天然苗木天然幼苗的存活率为 着色时显著大于未着色时 微网站，但阴影没有影响生存的 种植树苗。栽植苗木成活率 似乎与根的大小有关。
The effects of naturally shaded microsites on survival and height growth of natural and planted seedlings were evaluated after an initial shelterwood harvest in the eastern Siskiyou Mountains of southwestern Oregon. After 2 years, the probabilities of survival for planted Douglas-fir (84 percent) and ponderosa pine (56 percent) were significantly greater than those for natural Douglas-fir (13 percent) and white fir (18 percent). Stress from heat and drought was the greatest cause of mortality for both planted and natural seedlings. Survival of natural seedlings was significantly greater on shaded then on unshaded microsites, but shading did not affect survival of planted seedlings. Survival of planted seedlings seemed to be associated with root size.