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本文采用最优分割法对东北林业大学帽儿山林场6个主要造林树种的合理立地边界及其在各地形条件下的生长状况进行了研究。根据对调查材料的定量分析,发现:①在山下平缓地段,相对高差小,土壤含水率高,存在逆温现象,气温最低;在山中缓坡内,土壤含水率适中,气温最高;山上陡坡,海拔高,土壤含水率低,气温随着海拔增高而下降。②红松、黄波罗和椴树在山的上、下两段生长较差,在山中部的立地条件下生长较好。山中部较好的立地条件对落叶松和水曲柳生长的影响不明显。胡桃楸适合于山中、上部的立地条件。
In this paper, the optimal segmentation method was used to study the reasonable site boundaries of 6 main afforestation species in Maoershan Forest Farm of Northeast Forestry University and their growth under various terrain conditions. According to the quantitative analysis of the surveyed materials, it is found that: (1) in the gentle section of the mountain, the relative height difference is small, the soil moisture content is high, the inversion phenomenon exists and the temperature is the lowest; in the gentle slope, the soil moisture content is moderate and the temperature is the highest; High altitude, low soil moisture, the temperature decreases with the elevation. ② Korean pine, Huang Polo and lime trees grow poorly in the upper and lower parts of the mountain, and grow well under the site conditions in the middle part of the mountainous area. The better site conditions in the central part of the mountain have no obvious effect on the growth of larch and ash. Juglans mandshurica suitable for the mountain, the upper site conditions.