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运用逐步回归分析方法,对辽河源地区油松生长与气象因子之间的关系进行分析,结果表明:影响油松胸径生长量的主导气象因子是年蒸发量、年日照时数和年降雨量;影响油松树高生长量的主导气象因子是年日照时数、年蒸发量和年降雨量。由此可知,对辽河源地区油松生长量影响较大的气象因子是年蒸发量、年日照时数和年降雨量。
The results showed that the dominant meteorological factors influencing the DBH growth were annual evapotranspiration, annual sunshine hours and annual rainfall. By using stepwise regression analysis, the relationship between the growth of Pinus tabulaeformis and meteorological factors was analyzed. The dominant meteorological factors that affect the high growth of Pinus tabulaeformis trees are annual sunshine hours, annual evaporation and annual rainfall. It can be seen that the meteorological factors that greatly affect the growth of Pinus tabulaeformis in Liaohe-Heyuan area are annual evapotranspiration, annual sunshine hours and annual rainfall.