青藏高原30米光合有效辐射吸收系数产品（2023）

光合有效辐射吸收系数（FPAR）是碳循环研究的一个关键生理变量，被认为是表述植被生态系统的基本变量之一。光合有效辐射可以利用日照时数和天文辐射基于Angström-Prescott公式进行估算。基于30米空间分辨率的LANDSAT反射率数据，得到青藏高原区域的地表植被类型分类结果，根据不同植被类型NDVI值差异，构建遥感反演模型生产各植被类型的生长季FPAR产品。光合有效辐射吸收系数（FPAR）产品可以用来作为参数之一计算植被固碳量，评价植被生态系统状态等，广泛用于生态环境、林业等领域。该数据集投影坐标信息为经纬度WGS84。

Fraction of Photosynthetically Active Radiation (FPAR) is a critical physiological variable in carbon cycle research, and is regarded as one of the fundamental variables for characterizing vegetation ecosystems. Photosynthetically Active Radiation (PAR) can be estimated using sunshine duration and extraterrestrial solar radiation based on the Angström-Prescott formula. Using Landsat reflectance data with a 30-meter spatial resolution, we first obtained land vegetation type classification results over the Qinghai-Tibet Plateau. Then, by exploiting the differences in NDVI values across different vegetation types, we constructed a remote sensing inversion model to produce growing-season FPAR products for each vegetation category. The FPAR product can be used as a key parameter to calculate vegetation carbon sequestration and evaluate the status of vegetation ecosystems, and has been widely applied in fields such as ecological environment and forestry. The projection coordinate system of this dataset is the WGS84 geographic coordinate system (latitude and longitude).

搜集汇总

背景与挑战

背景概述

该数据集是2023年青藏高原地区30米空间分辨率的光合有效辐射吸收系数（FPAR）产品，基于LANDSAT反射率数据生产，用于植被固碳量计算和生态系统评价，支持生态环境和林业研究。数据以Geotiff格式存储，大小为4.99 GB，共享方式有保护期限制，并遵循CC BY 4.0许可协议。