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通过对不同坡向内的人工油松林生长量的调查分析 ,得出不同的坡向对人工油松林生长影响较大 ;用主分量分析的方法得到影响油松林树高和材积生长的相关因子顺序为 :林龄、年降水量、年平均温度、年水面蒸发量、≥ 1 0°积温、年平均相对湿度、年光照时数 ;分别建立了不同坡向的油松林树高、材积与林龄和年降水量、平均温度、水面蒸发总量等气象因子之间的回归方程 ,在生产中可用于油松生长的预测和预报。
Through the investigation and analysis of the growth of Pinus tabulaeformis plantation in different slopes, it was concluded that the different slope directions had a significant impact on the growth of Pinus tabulaeformis plantation. The order of correlation factors affecting the height and volume growth of Pinus tabulaeformis plantation was obtained by principal component analysis The results were as follows: age, annual precipitation, annual average temperature, annual surface evaporation, ≥10 ° accumulated temperature, annual average relative humidity and annual illumination hours. The tree height, volume and age of Pinus tabulaeformis And the annual precipitation, the average temperature, total evaporation and other meteorological factors between the regression equation can be used in the production of Pinus tabulaeformis growth prediction and forecast.