Vegetation Data for Kumasi, Ghana, 2014

The file describes tree diameters at breast height (DBH) and heights measurements of green spaces in Kumasi Ghana. The elevation and ground distance data are used to calculate the actual heights of trees. Both DBH and height data are then used to estimate tree biomass using appropriate biomass allometric equations.

Quality/Lineage: Stratified random sample was used. The city was divided into 2 based on NDVI: (HDUZ with NDVI<0.11 and HDUZ with NDVI> 0.11). Green spaces were then generated within each zone and the vegetation sampled randomly based on random sample points generated using remote sensing techniques. Spatial data were obtained from RapidEye and Landsat.
Purpose: The data is used to estimate green space carbon storage in the trees of Kumasi, Ghana

本数据集记录了加纳库马西（Kumasi）绿地内的树木胸径（DBH，Diameter at Breast Height）与树高测量数据。研究人员结合高程与地面距离数据，计算得到树木的实际高度。随后依托胸径与树高数据，结合适配的生物量异速生长方程，估算树木生物量。
数据质量与溯源：本数据集采用分层随机抽样方法。研究人员以归一化差分植被指数（NDVI）为依据，将该市划分为两个区域：归一化差分植被指数小于0.11的高密度城市绿地分区（HDUZ）与归一化差分植被指数大于0.11的高密度城市绿地分区（HDUZ）。随后在每个分区内生成绿地范围，并基于遥感技术生成的随机采样点，对植被开展随机抽样。空间数据来源于RapidEye与Landsat卫星。
数据集用途：本数据用于估算加纳库马西地区绿地树木的碳储存量。