天目山常绿、落叶阔叶混交林生长季能量通量及平衡分析  

Energy flux and balance analysis of evergreen and deciduous broad-leaved mixed forest in Tianmu Mountain during growing season

作　　者：方成圆[1] 江洪[1,2] 牛晓栋 陈晓峰[1] 孙恒[1] 

机构地区：[1]浙江农林大学浙江省森林生态系统碳循环与固碳减排重点实验室,浙江临安311300 [2]南京大学国际地球系统科学研究所,江苏南京210093

出　　处：《福建农林大学学报（自然科学版）》2016年第4期391-397,共7页Journal of Fujian Agriculture and Forestry University:Natural Science Edition

基　　金：国家自然科学基金资助项目(6190114;41171324);科技部国家科技基础条件平台项目(2005DKA32300);浙江省重点科技创新团队项目(2010R2010R0);高等学校博士学科点专项科研基金项目(20110091110028)

摘　　要：为探讨森林生态系统的能量平衡关系,利用开路涡度相关系统和常规气象仪器的观测结果,分析了2014年天目山常绿、落叶阔叶混交林生长季的能量通量变化特征,并计算了波文比及其能量闭合度.结果表明:生长季净辐射总量为1 810.2MJ·m^(-2),潜热通量、显热通量和土壤热通量分别为1 033.0、727.7和53.8 MJ·m^(-2),潜热通量占净辐射的57%,显热通量占净辐射的40%,土壤热通量占净辐射的3%;生长季能量闭合度为1.002,月平均能量闭合度为0.99.To understand the energy balance closure of forest system, open-path eddy covariance system and meteorological instru-ments were used to depict the features of energy flux in an evergreen and deciduous mixed hardwood forest in Tianmu Mountain dur-ing growing season in 2014. Bowen ratio and energy balance closure were also evaluated. Results showed that total net radiation of Timu Mountain in growing season was 1 810.2 MJ·m^-2. Latent heat, sensible heat and soil heat fluxes were 1 033.0, 727.7 and 53.8 MJ·m^-2, respectively, accounting for 57%, 40% and 3% of the net radiation. The energy balance closure was 1.002 in the growing season in 2014, with monthly average being 0.99.

关 键 词：能量通量 能量闭合度 常绿、落叶阔叶混交林 

分 类 号：S718.554.1[农业科学—林学]