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为了探讨人工林生态系统的生态功能与效应，根据生态学理论，采用长期定位观测的方法，系统地研究了东北林业大学老山人工林实验站红松人工林内降水的分配过程，林内各降水分量与林外降水量的相关性以及林地产流的特点。结果表明；（１）红松人工林对降雨的分配具有特殊的规律性，平均林冠截雨率为１３．４％，树干径流率为５．３％；（２）林内各降雨分量与林外降雨量呈显著的线性关系；（３）与落叶松人工林相反，红松人工林平均截雪率为３３．３％，明显强于截水能力；（４）红松人工林内地表径流很少发生，其地表径流率较林外荒地相对降低５８．８％。
In order to explore the ecological functions and effects of plantation ecosystem, the distribution of precipitation in Pinus koraiensis plantations in Laoshan Experimental Station in Northeast Forestry University was systematically studied based on ecological theory and long-term observation. The correlation with precipitation outside the forest and the characteristics of forestland runoff. The results showed that: (1) The Pinus koraiensis plantation has special regularity for the distribution of rainfall. The average canopy interception rain rate was 13.4% and the trunk runoff rate was 5.3%. (2) (3) Contrary to Larch plantation, the average snow cut rate of Korean pine plantation was 33.3%, which was significantly higher than that of water cut. (4) The surface runoff in Pinus koraiensis plantation was very high Less occurs, and the surface runoff rate is reduced by 58.8% compared with that in the forested area.