NACP NAFD Project: Forest Disturbance History from Landsat, 1986-2010

The North American Forest Dynamics (NAFD) products provided in this data set consist of 25 annual and two time-integrated forest disturbance maps for the conterminous United States (CONUS) derived from Landsat images for the period 1986-2010. Each annual map has classified pixels showing water, no forest cover, forest cover, no data available (data gaps) in present year, and forest disturbances that occurred in that year. The time-integrated maps are similarly classified, but over the entire 1986-2010 period with the first and last forest disturbance years identified and provided as separate maps.

本数据集提供的北美森林动态（NAFD）产品包括25张年度和两张时间综合的森林扰动地图，涉及美国本土（CONUS）地区，这些地图基于1986-2010年期间的土地卫星影像制作而成。每张年度地图均对像素进行了分类，以展示当前年份的水域、无森林覆盖区域、森林覆盖区域、数据不可用（数据缺口）以及当年发生的森林扰动。时间综合地图的分类方式类似，覆盖整个1986-2010年期间，并单独提供首年和末年的森林扰动年份地图。