【摘要】 利用通径分析(PA)、主成分分析(PCA)、典范分析(CA),筛选影响长白落叶松(Larisolgensis)生长的主导因子和研究地形、土壤、林木三者相互关系。结果表明,坡向、土壤质地、土壤厚度是主导因子;坡向与土壤质地、土厚、土壤有机质密切相关。利用生态学的立地分类方法,将辽宁东部长白落叶松人工林划分为3个立地类型组,14个主要立地类型。阴坡立地类型组有厚层、中层粉砂壤土类型和厚层、中层壤质土类型以及厚层粘壤土类型;半阴、半阳坡立地类型组有厚层、中层粉砂壤土类型,厚层、中层壤质土类型,中层砂质土类型和薄层土立地类型;阳坡立地类型组有厚层、中层、薄层土立地类型。更多还原

【Abstract】 Determinant factors influencing growth of Larix olgensis were screenced and interrelation- ships among topography soil and growth of L.olgensis were studied employing pathway ana- lysis (PA),principal component analysis(PCA) and canonical analysis(CA). The research indicates that determinant factors are exposure soil texture,soil depth,and ex- posure is closely related to organic matter,soil texture,soil depth.Site classification was made by using a method of ecological forest site classification.3 groups of site type and 14 main site types were derided for L.olgensis in the East part of Liaoning.Group of site type on shaded slope included 5 site types:thick,moderate silt loam and thick,moderate loam and thick clay loam.Group of site type on half-shaded and half-sunny slope included 6 site types:thick,mo- derate silt loam and thick,moderate loam and moderate sandy loam soil and thin soil.Group of site type on sunny slope included 3 site types:thick,moderate and thin soil.更多还原