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天然三大硬阔林的能量环境与光能利用率

ENERGY ENVIRONMENT AND SOLAR RADIATION UTILIZATION EFFICIENCY OF NATURAL HARDWOOD FORESTS

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【作者】 郭明辉李晓敏李英王缘棣

【Author】 Guo Minghui Li Xiaomin Li Ying Wang Yuandi (Northeast Forestry University,Harbin 150040,P.R.of China)

【机构】 东北林业大学

【摘要】 以天然黄波罗(PhelodendronamurenseRupr.)、水曲柳(FraxinusmandshuricaRupr.)、胡桃楸(Juglansmandshuricamaxim.)三大硬阔林为研究对象,系统地分析太阳辐射能在三大硬阔林中的时空变化规律,揭示了三大硬阔林能量的主要特征。在一个生长季节内到达三大硬阔林的太阳总辐射能为2.52×109J/m2,光合有效辐射能为1.01J/m2,净初级生产力为1.95×1011J/(hm2·a)。在生长季节内总辐射能的光能利用率为0.77%,光合有效辐射能的光能利用率为1.94%,在本地区内这样的光能利用率是不高的。

【Abstract】 The change regularity,in time and space,of solar radialion in natural phellodendron amurense,fraxinus mandshurica, and Juglans mandshurica hardwood forests was analyzed and the main charactenistics of energy enviromnent of the forests were revealed.The total solar radiation received by canopy was 2.52×10 9J/m 2 in a growth season,of which,direct solar radiation makes up 63.4% and scattered radiation was about 1.009×10 9J/m 2.The net primary productivity was 1.95×10 11 J/(hm 2·a).The utilization efficiency of total solar radiation energy was about 0.77% during growth seasons and the utilization efficiency of photosynthetic active radiation energy was estimitated at 1.94%.This photosynthesis efficiency in not very high in Chaihe area of Heilongjiang Province.

  • 【文献出处】 东北林业大学学报 ,JOURNAL OF NORTHEAST FORESTRY UNIVERSIYT , 编辑部邮箱 ,1996年04期
  • 【分类号】S718.5
  • 【被引频次】13
  • 【下载频次】115
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