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林网内农田热量平衡研究之二
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摘要:
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。
关键词:  日总量  净辐射  湍流热通量  土壤热通量  生态环境  蒸散  黑龙港流域  热量平衡  农田林网  
DOI:
基金项目:本支属“黄准海平原中低产地区综合防护林体系配置和结构的研究”课题的一部分
Abstract:
This paper mainly expounded the situation of the heat balance in the field inside the windbreak in the Hei Long Gong river region.The resu- lt of this research work was almost as same as the result we got in 1985, such as,the net radiation is higher inside the windbreak than that outside the windbreak.Though the evapotranspiration is different in di- fferent place inside the windbreak,the daily average evapotranspiration is less than that outside the windbrcak.Inside the windbreak the heat flux density is n...
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