| 上海郊区二氧化碳通量特征分析 |
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| 引用本文： | 支星,敖翔宇.上海郊区二氧化碳通量特征分析[J].气象研究与应用,2021,42(1):41-47. |
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| 作者姓名： | 支星 敖翔宇 |
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| 作者单位： | 上海市气象局科技处,上海200030;中国气象局上海城市气候变化应对重点开放实验室,上海200030;中国气象局上海台风研究所,上海200030;中国气象局上海城市气候变化应对重点开放实验室,上海200030;上海市气象与健康重点实验室,上海200030 |
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| 基金项目： | 国家自然基金青年科学基金项目(42005077);上海市青年科技英才扬帆计划项目(19YF1443900);上海市气象局面上项目(MS201803)。 |
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| 摘 要： | 利用上海郊区奉贤的涡动相关通量观测资料,对2015年9月至2016年8月二氧化碳(CO2)通量的时空分布特征、年总排放量进行了分析。结果表明,上海奉贤春、夏、秋季的9—14时CO2通量几乎全为负值,冬季CO2通量则全天均为正值。奉贤CO2通量没有明显的周末效应。植物光合作用是影响奉贤CO2通量时间变化特征的主要因素。各方向CO2通量大小与其周边下垫面情况密切相关,受植被覆盖影响,绝大部分方向的夏季白天CO2通量明显低于其他季节。奉贤CO2年总排放量为3.83 kg·m-2,明显小于植被覆盖率较低的东京、墨尔本和北京的郊区,也明显小于上海的中心城区。
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| 关 键 词： | 二氧化碳通量 郊区 涡动相关法 光合作用 |
Analysis of carbon dioxide flux characteristics in Shanghai suburb |
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| Zhi Xing,Ao Xiangyu.Analysis of carbon dioxide flux characteristics in Shanghai suburb[J].Journal of Guangxi Meteorology,2021,42(1):41-47. |
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| Authors: | Zhi Xing Ao Xiangyu |
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| Institution: | (Department of Science and Technology,Shanghai Meteorological Administration,Shanghai 200030;Shanghai Typhoon Research Institute,China Meteorological Administration,Shanghai 200030;Shanghai Key Laboratory of Urban Climate Change Response,China Meteorological Administration,Shanghai 200030;Shanghai Key Laboratory of Meteorology and Health,Shanghai 200030) |
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| Abstract: | Using the eddy-related flux observation data in Fengxian,a suburb of Shanghai,the temporal and spatial distribution characteristics of carbon dioxide(CO2)flux and the total annual emissions from September 2015 to August 2016 were analyzed.The results showed that the CO2fluxes in Fengxian of Shanghai were almost all negative from 9 am to 2 pm in spring,summer and autumn,while which was positive in all day in winter.There was no obvious weekend effect in Fengxian CO2flux.Plant photosynthesis was the main factor affecting the temporal variation of CO2flux in Fengxian.The CO2flux in each direction was closely related to the surrounding underlying surface.Affected by vegetation coverage,the CO2flux in summer in most directions during the day was significantly lower than in other seasons.Fengxian’s total annual CO2emission was 3.83 kg/(m2·a),which was significantly lower than the suburbs of Tokyo,Melbourne and Beijing where vegetation coverage was low,and it was also significantly lower than the central urban area of Shanghai. |
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| Keywords: | CO2 flux suburbs eddy covariance method photosynthesis |
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