Measurements of coarse woody debris at the Coweeta LTER Terrestrial Gradient Sites, Coweeta Hydrological Laboratory, Otto, NC from 2003 to 2014

The five Terrestrial Gradient sites were established in the early 1990s as part of the 1990 Coweeta LTER Renewal. The original terrestrial gradient sites were 20 x 40-m. In the late 1990s the plots were expanded to 80 x 80-m and later (around 1998) they were slope-corrected by Clark's lab using survey equipment. In this study, coarse woody debris (CWD) was measured in each of the five terrestrial gradient plots at the Coweeta Hydrologic Lab from 2003 through 2014. The length, diameters, and decay class of coarse wood were measured within each of the plots.五个陆地梯度样地（Terrestrial Gradient sites）于20世纪90年代初设立，为1990年Coweeta长期生态研究（Long Term Ecological Research, LTER）更新项目的组成部分。初始陆地梯度样地的面积为20×40米。20世纪90年代末，该批样地被扩建至80×80米；约1998年左右，克拉克（Clark）实验室利用测量设备对样地进行了坡度校正。本研究于2003年至2014年间，在Coweeta水文实验室（Coweeta Hydrologic Lab）的五个陆地梯度样地中开展了粗木质残体（coarse woody debris, CWD）调查，测定了样地内粗木质残体的长度、直径与腐烂等级。