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作 者 ：赵荣慧,沈培元

期 刊 ：生态学报 1988年 8卷 1期 页码：51~58

关键词：桃；

摘 要 ：辽宁东部山区是我国用材林基地之一,该区气候湿润,土壤肥沃,适于核桃楸生长。为了在经营管理上做到“适地适树”,我们做了核桃楸林立地类型数量分类的研究。首先,选定与立类型密切相关的立地因子,建立多变量数学模型,计算其线性组合函数值,即主分量。用第一主分量与第二主分量作两维排序,再分别进行两维聚类,划出核桃楸立地类型。 为使用方便起见,以信息量最多的第一主分量,编制核桃楸立地类型上层林分高表,应用于林业生产实际。

Abstract:The mountainous area in eastern Liaoning Province is one of timber forest bases in china. The conditions, such as humid climate and fertile soil, in this area are favorable to the growth of manchurian walnut. In order to realize the rule of "proper trees in proper sites" and to manage them properly, we were engaged in studies on the quantitative classification of the monchurian walnut plantation site types.At first, the site factors closely related to the site types were selected, a multivariable mathematic...

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