Landscape-scale heterogeneity in lodgepole pine serotiny
Landscape-scale heterogeneity in lodgepole pine serotiny
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黑松血清的景观尺度异质性
DOI：
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发表时间：
1994
期刊：
影响因子：
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通讯作者：
M. Turner
中科院分区：
文献类型：
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作者：
D. Tinker;W. H. Romme;W. Hargrove;R. Gardner;M. Turner
1992年对扭叶松（Pinuscontorta Dougl.）前大声。变种（Latifolia Engelm）在黄石国家公园的一项研究提出了四个问题：（i）是否有形态学特征可以用来估计1988年烧毁的森林中的常绿树在火灾前的比例？(ii)在什么样的空间尺度上，在整个景观中，树木的百分比是不同的？(iii)哪些环境因素与肥胖相关？（iv）火烧前的郁闭度与火烧后火炬松幼苗密度的关系如何？我们首先在未燃烧的森林中沿着沿着4个2950米的样带，并检查了烧毁的树木附近的针叶树和非针叶树的特征。结果表明，不对称的锥和锥连接到分支的锐角是可靠的指标，即使在燃烧的树木。然后，我们对1988年烧毁的9块小块松树林进行了取样，面积从1公顷到3600公顷不等。 我们在不同的时间间隔采样了...
A 1992 study of serotiny in lodgepole pine (Pinuscontorta Dougl. ex Loud. var. latifolia Engelm.) in Yellowstone National Park asked four questions: (i) are there morphological characteristics that can be used to estimate pre-fire proportion of serotinous trees in forests that burned in 1988?; (ii) at what spatial scale does percent serotinous trees vary across the landscape?; (iii) which environmental factors are correlated with serotiny?; and (iv) what is the relationship between prefire serotiny and postfire lodgepole pine seedling density? We first sampled cone characteristics in serotinous and nonserotinous trees along four 2950-m transects in unburned forests, and examined burned trees nearby. Results indicated that asymmetrical cones and an acute angle of cone attachment to the branch were reliable indicators of serotiny even in burned trees. We then sampled nine patches of lodgepole pine forest that had burned in 1988, and varied in size from 1–3600 ha. We sampled serotiny at varying intervals alo...