A First Assessment of Canopy Cover Loss in Germany’s Forests after the 2018–2020 Drought Years

编号 030033005

推送时间 20220214

研究领域 森林经理 

年份 2022 

类型 期刊 

语种 英语

标题 A First Assessment of Canopy Cover Loss in Germany’s Forests after the 2018–2020 Drought Years

来源期刊 REMOTE SENSING

期 第330期

发表时间 20220125

关键词 forest;  canopy cover loss;  drought;  Sentinel-2;  Landsat-8;  disturbance index;  time series; 

摘要 Central Europe was hit by several unusually strong periods of drought and heat between 2018 and 2020. These droughts affected forest ecosystems. Cascading effects with bark beetle infestations in spruce stands were fatal to vast forest areas in Germany. We present the first assessment of canopy cover loss in Germany for the period of January 2018–April 2021. Our approach makes use of dense Sentinel-2 and Landsat-8 time-series data. We computed the disturbance index (DI) from the tasseled cap components brightness, greenness, and wetness. Using quantiles, we generated monthly DI composites and calculated anomalies in a reference period (2017). From the resulting map, we calculated the canopy cover loss statistics for administrative entities. Our results show a canopy cover loss of 501,000 ha for Germany, with large regional differences. The losses were largest in central Germany and reached up to two-thirds of coniferous forest loss in some districts. Our map has high spatial (10 m) and temporal (monthly) resolution and can be updated at any time.

服务人员 付贺龙

服务院士 唐守正

PDF文件 浏览全文