Forest stand age map of Canada (2011) and the United States (2006 & 2011)

This data publication contains an update for the 2006 Continental United States (CONUS) and Alaska to the first continental forest stand age map of North America. A new map for 2011 covering Alaska, CONUS and Canada has been produced. It was made by combining forest inventory data, historical fire data, optical satellite data and other disturbance/forest change products that have become available after the original product was published. A companion map of the standard deviations for age estimates, developed for quantifying uncertainty, is also included.The forest stand age data can be used in large-scale carbon modeling, both for land-based biogeochemistry models and atmosphere-based inversion models, in order to improve the spatial accuracy of carbon cycle simulations.This product is an updated version of Pan et al. (2014).

Original metadata date was 11/06/2015. Minor metadata updates on 12/15/2016 and 07/02/2019.

本数据出版物包含了针对2006年美国大陆（CONUS）和阿拉斯加的更新，以及北美首张大陆森林立地年龄图。一张新的地图已制作完成，涵盖2011年的阿拉斯加、CONUS和加拿大。该地图是通过结合森林资源数据、历史火灾数据、光学卫星数据以及其他自原始产品发布后可得的风险/森林变化产品而制成的。为量化不确定性而开发的年龄估计标准差伴随图亦包含在内。森林立地年龄数据可用于大规模碳循环模拟，无论是陆地生物地球化学模型还是基于大气层的逆模型，均旨在提高碳循环模拟的空间精度。该产品是Pan等（2014）的更新版。原始元数据日期为2015年11月6日，于2016年12月15日和2019年7月2日进行了元数据的轻微更新。