| 基于涡动相关技术的森林生态系统二氧化碳通量研究进展 |
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| 引用本文： | 龚元,纪小芳,花雨婷,张银龙,李楠.基于涡动相关技术的森林生态系统二氧化碳通量研究进展[J].浙江农林大学学报,2020,37(3):593-604. |
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| 作者姓名： | 龚元 纪小芳 花雨婷 张银龙 李楠 |
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| 作者单位： | 1.南京林业大学 生物与环境学院，江苏 南京 2100372.南京林业大学 江苏省南方现代林业协同创新中心，江苏 南京 2100373.阿拉巴马大学 生物科学系，阿拉巴马 塔斯卡卢萨 AL354874.南京林业大学 林学院，江苏 南京 2100375.南京林业大学 风景园林学院，江苏 南京 210037 |
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| 基金项目： | “十三五”国家重点研发计划项目(2016YFC0502704)；江苏高校优势学科建设工程资助项目(PAPD) |
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| 摘 要： | 森林生态系统是陆地生态系统碳循环的重要组成部分，森林对大气二氧化碳(CO2)浓度具有重要的调节作用，开展森林生态系统碳循环研究对更好地了解生物地球化学过程和应对全球气候变化具有重要的科学意义和应用价值。涡动协方差/涡动相关技术是目前应用最广泛的森林生态系统CO2通量观测技术。讨论了基于该技术的森林生态系统CO2通量研究的部分代表性成果，总结了当前森林生态系统CO2通量的主要研究成果并对未来研究提出展望。目前，森林生态系统CO2通量的研究主要集中于:①森林生态系统的碳源/汇估算；② CO2通量观测源区/足迹的计算；③ CO2通量动态特征的提取及其环境影响因子；④基于统计模型的森林生态系统物候特征参数的提取；⑤基于机理模型的气候系统对森林生态系统碳循环的影响。主要结论为:森林生态系统是陆地生态系统的重要碳汇，在对森林生态系统进行CO2通量观测时需对其通量源区的空间代表性进行检验，森林生态系统碳源/汇状态受到树龄、降水和土壤含水量等因素的影响，空气温度是森林生态系统碳循环的重要影响因子。未来森林生态系统CO2通量研究应该集中于提高通量足迹模型计算精度，讨论不同林分对大气CO2的贡献强度。结合气候系统模型和生态生理模型建立植物生理过程参数化模型、预测气候变化对森林碳交换的影响。区域-全球尺度森林生态系统CO2通量研究未来将关注多站点通量，气象数据长时间序列的整合分析，讨论CO2通量气候态特征与碳源/汇的空间格局，更好地了解全球陆地生态系统碳循环机制。表1参64
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| 关 键 词： | 森林生态系统 涡动相关技术 二氧化碳通量 碳循环 |
| 收稿时间： | 2019-07-09 |
Research progress of CO2 flux in forest ecosystem based on eddy covariance technique: a review |
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| GONG Yuan,JI Xiaofang,HUA Yuting,ZHANG Yinlong,LI Nan.Research progress of CO2 flux in forest ecosystem based on eddy covariance technique: a review[J].Journal of Zhejiang A&F University,2020,37(3):593-604. |
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| Authors: | GONG Yuan JI Xiaofang HUA Yuting ZHANG Yinlong LI Nan |
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| Abstract: | Forest ecosystem is an important part of carbon cycle in terrestrial ecosystem. Forests can regulate CO2 concentration in the atmosphere and it is of great scientific significance and application value to conduct carbon cycle research of forest ecosystem for better understanding of biogeochemical processes and coping with global climate change. The eddy covariance technique is currently the most widely used CO2 flux observation technique in forest ecosystem. This paper summarizes the main achievements of CO2 flux in forest ecosystem and discusses some representative results of CO2 flux in forest ecosystem based on this technique. Current studies on CO2 flux in forest ecosystem mainly focus on the following 5 aspects: carbon source/sink estimation of forest ecosystem, calculation of source area/footprint of CO2 flux observations, dynamic characteristics of CO2 flux and its environmental impact factors, extraction of phenological parameters of forest ecosystem based on statistical model, and impact of climate system based on mechanism model on carbon cycle of forest ecosystem. The main conclusions are as follows: The forest ecosystem is an important carbon sink of terrestrial ecosystem. During CO2 flux observation of forest ecosystem, the spatial representativeness of the flux source area needs to be tested. The carbon source/sink status of the forest ecosystem is affected by tree age, precipitation and soil water content. Air temperature is an important factor influencing carbon cycle of forest ecosystem. Future studies on CO2 flux in forest ecosystem should focus on improving the accuracy of flux footprint model, discussing the contributions of different stands to CO2 emissions, and establishing a parametric model of plant physiological process by combining climate system model and ecophysiological model to predict the impact of climate change on forest carbon exchange. The study of CO2 flux in forest ecosystem at the regional-global scale will focus on multi-site flux and integrated analysis of long-term sequence of meteorological and flux data, and discuss the climatology characteristics of CO2 flux and the spatial pattern of carbon source/sink to better understand the carbon cycle of terrestrial ecosystem.Ch, 1 tab. 64 ref.] |
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