Annual woody debris dynamics census data for the 50-ha plot on Barro Colorado Island, Panama

This data package contains the annual woody debris census data from 2009 to 2024 (excluding 2011) for a spatially stratified sample of the 50-ha plot on Barro Colorado Island, Panama. The aim of this census is to quantify the volume and mass of standing and fallen coarse woody debris (abbreviated CWD, pieces at least 200mm in diameter) and standing fine woody debris, (abbreviated FWD, pieces less than 200mm in diameter).  Censuses took place in 100 subplots, each 40 x 40 m.  Fallen woody debris were censused using the line-intersect method in four 40-m transects divided into 10-m subsections.  Standing woody debris was censused with area-based methods, with CWD censused in the entire subplot, and FWD censused only in the central area with a 5 m radius.  Methods followed the ForestGEO CWD Dynamics protocol, included here.  File structure and details about data processing are given in the readme file.

本数据包收录巴拿马巴罗科罗拉多岛50公顷样地空间分层抽样区域2009年至2024年（不含2011年）的年度木质残体普查数据。本次普查旨在量化立枯与倒伏粗木质残体（coarse woody debris，缩写CWD，指直径≥200mm的残体）以及立枯细木质残体（fine woody debris，缩写FWD，指直径<200mm的残体）的体积与质量。
普查共设置100个40×40米的样方。倒伏木质残体采用线截距法开展普查：每个样方内设置4条40米长的样带，并将每条样带划分为10米的子区段。立枯木质残体则采用基于面积的普查方法，其中CWD在整个样方范围内开展普查，而FWD仅在样方中心5米半径的区域内进行普查。本次普查方法遵循ForestGEO CWD动态监测规程（本数据包已收录该规程）。数据文件结构及数据处理细节详见自述文件（readme）。