以位于江苏句容下蜀的长江三角洲森林生态站栎林为研究对象，采用涡度相关技术进行长期CO2通量观测，得到2007年12月至2008年11月间栎林净碳交换（NEE）的日变化过程：栎林从7:00左右开始吸收CO2， 10:00至14:00期间，对CO2的吸收一直维持在较大量，到17:30左右转化为碳排放。对于栎林NEE与光合有效辐射（PAR）及气温的响应关系分析表明：当光合有效辐射大于5 μmol/(m2·s)时，在不同季节NEE与PAR相关关系不同，NEE的月平均值与冠层月平均温度呈直线相关。
Abstract
The research choice the secondary oak forest ecosystem in the forest ecopositioning location research station of Yangtze River Delta, Southeastern China, and monitored the CO2, H2O, temperature, moisture, PAR, and so on by eddy covariance. The data of regulated change and process of diurnal Net Ecosystem Exchange (NEE) of forest ecosystem were obtained during a year. The ecosystem began to absorb CO2 at about 7: 00 am, and maintains in great absorption from 10:00 to 14:00, at about 17: 30, the ecosystem began to release CO2. The analysis of the relationships of NEE and forest ecosystem and environmental factors, shows that: When the PAR>5 μmol/(m2·s), the relationship of NEE and PAR has no significant correlation in different season, monthly average NEE and monthly average temperature in canopy had linear relationship.
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参考文献
［1］胡品平,徐正春,刘成香.森林碳汇服务的经济学分析［J］.中国林业经济, 2007(2): 34-37.
［2］何英,张小全,刘云仙.中国森林碳汇交易市场现状与潜力［J］.林业科学,2007,43(7):106-110.
［3］沈文清,刘允芬,马钦彦,等.千烟洲人工针叶林碳素分布、碳贮量及碳汇功能研究［J］.林业实用技术,2006(8):5-8.
［4］Falge E, Baldocchi D, Olson R O, et al. Gap filling strategies for defensible annual sums of net ecosystem exchange ［J］.Agricultural and Forest Meteorology, 2001, 107(1): 43-69.
［5］张雷明.Gap Filling and Partitioning ［R］. Beijing: China Flux Training Course,2009.
［6］Baldocchi D D, Hicks B, Meyers T P. Measuring biosphereatmosphere exchanges of biologically related gases with micrometeorological methods［Ｊ］. Ecology, 1988, 69:1331-1340.
［7］Paw U K, Baldocchi D D, Meyers T P, et al. Correction of eddy covariance measurements incorporating both adjective effects and density fluxes［Ｊ］. BoundaryLayer Meteorology, 2000, 97:487-511.
［7］Reynolds O. On the dynamical theory of incompressible viscous fluxes and the determination of criterion ［J］. Phil Trans Roy Soc London A, 1895, 174: 935-982.
［9］Garratt J R. Limitations of the eddy correlation technique for determination of turbulent fluxes near the surface ［J］. BoundaryLayer Meteorology, 1975, 8: 255-259.
［10］Carrara A.Net ecosystem CO2 exchange of mixed forest in Belgium over 5 years ［J］. Agricultural and Forest Meteorology, 2003, 119(3-4):209-227.
［11］Pilegaard K, Hummelsh j P, Jensen N O, et al. Two years of continuous CO2 eddyflux measurements over a Danish beech forest ［J］. Agricultural and Forest Meteorology, 2001, 107(1): 29-41.
［12］Aubinet M, Chermanneb B, Vandenhaute M, et al.Long term carbon dioxide exchange above a mixed forest in the Belgian Ardennes ［J］. Agricultural and Forest Meteorology, 2001, 108(4): 293-315.
［13］Hungate B A. Evapotranspiration and soil water content in a scrub oak woodland under carbon dioxide enrichment ［J］. Global Change Biology, 2002 (8): 289-298.
［14］彭镇华,王妍,任海青,等.安庆杨树林生态系统碳通量及其影响因子研究［J］.林业科学研究,2009,22(2): 237-242.
［15］赵双菊,张一平,于贵瑞,等.西双版纳热带季节雨林晴天CO2交换的日变化和季节变化特征［J］.植物生态学报, 2006, 30(2): 295-301.
［16］McCaughey J H. Energy balance storage terms in a mature mixed forest at Petawawa, OntarioA case study ［J］. BoundaryLayer Meteorology, 1985, 31: 89-101.
［17］王国兵,唐燕飞,阮宏华.次生栎林与火炬松人工林土壤呼吸的季节变异及其主要影响因子［J］.生态学报,2009, 29(2): 966-975.
基金
收稿日期：2010-04-16修回日期：2010-11-30基金项目：国家林业局重点项目（2001-5）；国家林业局“948”项目（2006-4-20）；“十一五”国家科技支撑计划（2006BAD03A0702/wb01）作者简介：蒋琰(1984—)，硕士生。*胡海波（通信作者）：教授。Email: huhb2000@yahoo.com.cn。引文格式：蒋琰，胡海波,张学仕,等. 北亚热带次生栎林碳通量及其影响因子研究［J］. 南京林业大学学报:自然科学版,2011,35(3):38-42.
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