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众所周知,人工林林分密度直接影响到林分平均直径。在相同的立地条件下,林木平均营养面积和林分平均直径随着密度的增加而呈现递减的趋势。密度超过一定限度的林分,其平均值径最终将保持在一个相似的水平上。本文研究了上述规律对新疆落叶松、雪岭云杉天然林或同一树种在不同立地条件下的林分内的适应性。我们认为,研究一个树种在各种立地条件下的林分平均直径与林分密度之间的变化规律,对森林经营是有极大稗益的。因为一个林业经营单位所辖森林地域宽广、往往
As we all know, plantation stand density directly affects the average diameter of the stands. Under the same site conditions, the mean nutrient area of forest trees and mean diameter of forest stand declining with the increase of density. Stands with densities above a certain limit will eventually maintain their mean diameter at a similar level. In this paper, the adaptability of the above rules to the natural forests of Larix gmelinii and Schrenkianae snow forests or the same tree species under different site conditions was studied. In our opinion, the study of the variation of the mean diameter of stand and the stand density of a tree species under various site conditions has great benefits for forest management. Because of a broad area of forest under the jurisdiction of a forest management unit, often