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本文主要论述黑龙港流域防护林网内农田热量平衡状况。研究结果表明,主要结论与1985年有较好的重复性,如净辐射在林网内比林网外高,蒸散耗热在林网内不同位置相差较大,但日总量平均都比林网外小;林网内湍流热通量比林网外小,且为负值;土壤热通量在林网内此林网外高。在林网内净辐射收入的热量主要用于蒸散耗热。说明林网对水文气象效应有调节作用,为林网内作物生长提供了良好的生态环境。
This paper mainly discusses the farmland thermal balance in shelterbelt in Heilongjiang River Basin. The results show that the main conclusions are as good as the repeatability in 1985. For example, the net radiation is higher in the forest net than in the forest net, and the evapotranspiration heat loss differs greatly at different positions in the forest net. However, Net outside the small; forest network turbulent heat flux outside the forest network is small, and negative; soil heat flux in the forest network outside the forest network outside the high. Net net income in the forest net income heat is mainly used for evapotranspiration. The forest network has a regulating effect on the hydrological meteorological effects, which provides a good ecological environment for crop growth in the forest network.