Global peatland, bare rock and bare sand extent at 100 m to 1 km spatial resolution based on multisource data

Ensemble estimate of the global distribution of peatlands / extent (peatland.extent_wri.gfw.peatgrids_p). This is a simple average from three (3) sources of data: WRI Global Peatlands extent map at 30-m (250-m effective); PEATGRIDS at 1-km; Global Peatlands Map 2.0 produced by the Global Peatlands Initiative; The average between the three sources is an extent map with value 0–100%. The refence period is 2000–2020, although probably most of data is based on pre 2010. For more details about the source data please refer to the cited references below. Bare rock and bare sand estimates are based on the following two sources of data: Copernicus GLC land cover at 100-m for 2015 and 2019; Local Climate zones map at 100-m for 2018; Two classes are considered: (1) probability of occurrence of bare rock (bare.rock_glc.gfz_p), (2) probability of occurrence of bare sand i.e. shifting sand (bare.soil.sand_glc.gfz_p). We recommend using only the 1-km data for spatial modeling. The time-series of bare areas (bare.areas_esa.cci_p) are based on the ESA CCI Land Cover time-series (2000–2022) 300-m resolution data; also available at 1-km resolution based on "average" resampling.全球泥炭地分布与范围集合估算结果（peatland.extent_wri.gfw.peatgrids_p）。本数据集采用3套数据源的简单平均计算得到： 1. 世界资源研究所（World Resources Institute, WRI）30米分辨率（有效分辨率250米）全球泥炭地范围地图； 2. 1公里分辨率的PEATGRIDS数据集； 3. 全球泥炭地倡议（Global Peatlands Initiative）发布的Global Peatlands Map 2.0。 经三套数据平均生成的范围图取值区间为0–100%。参考时段为2000–2020年，但多数数据可能基于2010年之前的观测资料。如需了解源数据的更多细节，请参阅下文所列参考文献。 裸岩与裸沙的估算结果基于以下两套数据源： 1. 2015年与2019年100米分辨率的哥白尼全球土地覆盖（Copernicus GLC）数据； 2. 2018年100米分辨率的局地气候区（Local Climate Zones）地图。 本次共考虑两类地物：（1）裸岩发生概率（bare.rock_glc.gfz_p）；（2）裸沙（即流动沙丘）发生概率（bare.soil.sand_glc.gfz_p）。我们建议仅使用1公里分辨率数据开展空间建模。 裸地时间序列数据集（bare.areas_esa.cci_p）基于欧洲空间局气候变化倡议（European Space Agency Climate Change Initiative, ESA CCI）土地覆盖时间序列数据（2000–2022年，分辨率300米）制作，同时也可提供经‘平均重采样’处理得到的1公里分辨率版本。