北京奥林匹克森林公园CO2浓度特征研究  

CO_2 concentration characteristics in Beijing Olympic Forest Park

作　　者：潘剑彬[1] 董丽[1] 廖圣晓[1] 晏海[1] 乔磊[1] 李冲[1] 

机构地区：[1]北京林业大学园林学院 国家花卉工程研究中心

出　　处：《北京林业大学学报》2011年第1期30-35,共6页Journal of Beijing Forestry University

基　　金：“十一五”国家科技支撑计划项目(2006BAD07B09);北京奥林匹克森林公园生态规划研究项目

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310μmol/mol),而下午时分在达到测定时间内最低值(约300μmol/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(413μmol/mol,生长季节为328μmol/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(328μmol/mol),秋、冬季最高(413μmol/mol),而春季(410μmol/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(360μmol/mol)经过渡区(336μmol/mol)到核心区(332μmol/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。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 umol/mol）, reaching the minimum concentration （approx. 300 umol/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 umol/mol, 328 umol/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 umol/mol） in the summer and the highest in the autumn and winter （413 umol/mol）, but no significant differences existed between the spring （410 umol/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 umol/mol） to the buffer area （336 umol/mol） and to the center of the park （332 umol/ 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.

关 键 词：CO2浓度 植被生态效应 北京奥林匹克森林公园 城市绿地 

分 类 号：S731.2[农业科学—林学]