Net Carbon Exchange of a Young Upper-Slope Deciduous Forest at Harvard Forest LPH Tower since 2002

This data set contains sensible heat exchange, water vapor exchange and carbon exchange as well as environmental data for a deciduous forest dominated by red oak (Quercus rubra). It is 1.1 km WNW of the EMS tower where continuous eddy covariance measurements began in 1992 (see HF004). The High Deciduous site is about 385 m a.s.l., or 35 m higher in elevation than the EMS, which is situated in a relatively low area near a stream. The forest near this eddy covariance tower is broadly similar in species composition to the EMS site, but it is younger and shorter in stature. The site was cleared for pasture, but not deeply plowed or planted, in the 18th and19th centuries. Agriculture on the site was abandoned near the end of the 19th century. The forest within 200 to 300 m of the eddy covariance tower to the NW, W, SW, and S burned in an intense fire in 1957, which left few or no surviving trees.

本数据集包含以红栎（Quercus rubra）为优势种的落叶林的感热交换、水汽交换与碳交换数据，以及相关环境数据。该站点位于EMS通量塔西北偏西方向1.1公里处，EMS塔的连续涡度协方差观测始于1992年（详见HF004）。该高落叶林站点海拔约385米，比EMS塔所在区域高出35米；EMS塔地处溪流附近的相对低洼地带。该涡度协方差塔周边的森林与EMS站点的森林物种组成大体相似，但林分更年轻，树高也更低。该站点在18至19世纪曾被开垦为牧场，但未进行深耕或人工造林。该站点的农业活动于19世纪末左右停止。1957年，该涡度协方差塔西北、西、西南及南向200至300米范围内的森林发生过一场高强度林火，几乎无存活树木留存。