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北美油松 Pinus rigida Mill.普遍分布于美国的东北部。从缅因州一直延伸到乔治亚的北部,而广袤的森林只出现在海弯平原和冰川碛积平原的东北部的一些地方。在新杰尔塞的贝伦斯,以北美油松为优势的森林面积约为2,000平方公里或1,164,000英亩。尽管大量地利用,而树木总是主干弯曲与枝条瘦弱相结合的形状。虽然已对针叶树类包括火炬松、恩氏云杉、红杉等进行了大量地温度效应的研究,但对北美油松做过似类控制条件下的研究工作。我们把矮小种群(Populations)和大小正常种群的子代,繁殖于三种温度区,观察种群在适宜的和可能不适合的温度下是否会有相同的反应(选用了 Duke 人工气候室,分为有利的、寒冷的和温暖的三个温度区),同时了解温度的
North American Pinus pinus rigida Mill. Commonly distributed in the northeastern United States. Stretching from Maine to the north of Georgia, while vast forests only appear in some parts of the northeastern plain of the Kelp Plain and Glacial Moraine. In Belengs, New Jersey, the dominant forest in North American pine is about 2,000 square kilometers or 1,164,000 acres. Despite its extensive use, trees are always the shape of a trunk that is curved in conjunction with thinness of the branches. Although a large number of studies have been conducted on coniferous species including Pinus taeda, Spruce (Engraulis japonicus), Sequoia and so on, the researches on the control of Pinus tabulaeformis have been done. We populate the progeny of Populations and normal-sized populations in three temperature zones and observe whether the population will react at the appropriate and possibly unsuitable temperature (using the Duke Artificial Climate Chamber, divided into Favorable, cold and warm three temperature zones), while knowing the temperature