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    潘剑彬, 董丽, 廖圣晓, 晏海, 乔磊, 李冲. 北京奥林匹克森林公园CO2浓度特征研究[J]. 北京林业大学学报, 2011, 33(1): 30-35.
    引用本文: 潘剑彬, 董丽, 廖圣晓, 晏海, 乔磊, 李冲. 北京奥林匹克森林公园CO2浓度特征研究[J]. 北京林业大学学报, 2011, 33(1): 30-35.
    PAN Jian-bin, DONG Li, LIAO Sheng-xiao, YAN Hai, QIAO Lei, LI Chong. CO2 concentration characteristics in Beijing Olympic Forest Park.[J]. Journal of Beijing Forestry University, 2011, 33(1): 30-35.
    Citation: PAN Jian-bin, DONG Li, LIAO Sheng-xiao, YAN Hai, QIAO Lei, LI Chong. CO2 concentration characteristics in Beijing Olympic Forest Park.[J]. Journal of Beijing Forestry University, 2011, 33(1): 30-35.

    北京奥林匹克森林公园CO2浓度特征研究

    CO2 concentration characteristics in Beijing Olympic Forest Park.

    • 摘要: 使用红外CO2测定仪跟踪测定了北京奥林匹克森林公园2008—2009年度的CO2浓度。结果表明:1)公园内CO2浓度在生长季节存在明显的日变化特征,表现为上午时分显著降低,中午时分低浓度浮动(约310 μmol/mol),而下午时分在达到测定时间内最低值(约300 μmol/mol)之后显著升高的特征;2)非生长季节与生长季节的CO2浓度变化特征相近,只是日平均浓度(413 μmol/mol, 生长季节为328 μmol/mol)和日最低浓度出现的时间(13:00,生长季节为14:00左右)有所不同;3)4个季节的CO2平均浓度比较,夏季最低(328 μmol/mol),秋、冬季最高(413 μmol/mol),而春季(410 μmol/mol)与秋、冬季无显著差异;4)公园内部样点间在生长季节由边缘区(360 μmol/mol)经过渡区(336 μmol/mol)到核心区(332 μmol/mol)的CO2浓度呈现较明显的逐渐降低的梯度变化特征。试验结果说明公园范围内较高的植被覆盖率和丰富的植被层次能够降低其区域内的CO2浓度,另外植被和土壤的呼吸作用等因素也可能对CO2浓度有影响。

       

      Abstract: We investigated CO2 concentration in the Beijing Olympic Forest Park between 2008 and 2009. Ten sampling points, including nine inside the park and one outside the park as control, were chosen and CO2 concentration was measured in clear days of April, July, November of 2008 and January 2009, respectively. The results indicated that: 1) the diurnal variation of CO2 concentration in the park was significant, presenting generally a picture of decreasing from 08:00-11:00, then fluctuating at noon around a low concentration point (approx. 310 μmol/mol), reaching the minimum concentration (approx. 300 μmol/mol), and increasing significantly afterwards; 2) variation characteristics of CO2 concentration in the non-growing season was similar to that in the growing season, except for the daily average concentration (413 μmol/mol, 328 μmol/mol in the growing season) and the time of the minimum concentration (13:00 pm, 14:00 pm in growing season); 3) it had the lowest concentration (328 μmol/mol) in the summer and the highest in the autumn and winter (413 μmol/mol), but no significant differences existed between the spring (410 μmol/mol) and the winter; 4) the CO2 concentration in growing season followed a gradient change, decreasing gradually from near the border of the park (360 μmol/mol) to the buffer area (336 μmol/mol) and to the center of the park (332 μmol/mol). The results indicate that the high vegetation coverage and abundant plant community structures decreased CO2 concentration in the park area, and the respiration of vegetation and soil could also have some effects.

       

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