Hemlock Understory Vegetation Plots at Harvard Forest since 2002

The invasion of the non-native insect, hemlock woolly adelgid (HWA, Adelgids tsugae) into hemlock (Tsuga canadensis) stands in New England has the potential to rapidly change the ecology and function of these forests. The investigators of this project are monitoring how forest structure and function changes as the adelgid invades hemlock stands in Harvard Forest. To do this, this study surveyed community vegetation structure and composition prior to adelgid infestation as well as during the progress of the infestation.非本土昆虫铁杉球蚜（hemlock woolly adelgid，HWA，Adelgids tsugae）入侵新英格兰地区的加拿大铁杉（Tsuga canadensis）林分，或将快速改变此类森林的生态系统特性与功能。本项目研究团队正对哈佛森林内遭受该球蚜侵染的铁杉林分的结构与功能变化开展监测。为此，本研究在铁杉球蚜侵染前及侵染进程中，对群落植被的结构与组成进行了调查。