2019年全球重点区域植被光合有效辐射吸收系数

FPAR指植被吸收的光合有效辐射（400-700nm，PAR）占到达冠层顶部光合有效辐射的比例。它是植物的重要生态参数，遥感得到的FPAR可被用于监测全球范围内植被健康及生长状况，精确的FPAR计算对农业耕作、生态系统、碳循环、区域及全球尺度气候变化的相关研究具有重要意义。产品数据集以季度为单位，包含东北、黄淮海粮食主产区；大兴安岭、呼伦贝尔森林和草地；北美粮食主产区；亚马逊等全球重点区域FPAR反演结果。

FPAR refers to the fraction of Photosynthetically Active Radiation (PAR, 400–700 nm) absorbed by vegetation relative to the total PAR reaching the top of the canopy. As a critical ecological parameter for vegetation, FPAR retrieved via remote sensing can be used to monitor global vegetation health and growth conditions. Accurate FPAR calculation is of great significance for studies related to agricultural cultivation, ecosystems, carbon cycles, and climate change research at both regional and global scales. This FPAR product dataset is released on a quarterly basis, and contains FPAR inversion results from key global regions including the major grain-producing areas of Northeast China and the Huang-Huai-Hai Plain, forest and grassland areas in the Greater Khingan Mountains and Hulunbuir, major grain-producing areas of North America, the Amazon Basin, and other similar key regions.