2015-2020年中国光合有效辐射重构数据集

A dataset of photosynthetically active radiation reconstruction in China from 2015 to 2020

光合有效辐射数据可广泛应用于生态学、农学、资源与环境学、气候学等领域的研究,对生态系统的生产力评估、优化农业生产布局及粮食安全问题、大气二氧化碳(CO_(2))演变及其变化规律、区域CO_(2)源汇的估算等方面都具有重要应用价值。但由于光合有效辐射长期连续的观测数据较少,特别是我国国家尺度的长期观测数据更为稀缺,所以获得准确且长时间、大范围的光合有效辐射数据将为相关研究提供科学数据支持。本文通过利用中国气象局及中国生态系统研究网络(CERN)已有数据,基于“混合模型”重构得到国家尺度长时间序列的总辐射数据,然后结合已构建的通过总辐射估算的不同气候区光合有效辐射方案,最终获得了精度较好,且通过检验的重构光合有效辐射数据。本数据集时间范围为2015–2020年。

Photosynthetically active radiation data can be widely used in ecology,agriculture,resources and environment,climatology and other fields.It holds significant value in ecosystem productivity assessment,agricultural production layout optimization and food security,atmospheric carbon dioxide(CO_(2))dynamics and its change patterns,as well as the estimation of regional CO_(2) sources and sinks.However,there is a scarcity of long-term,continuous observation data of photosynthetically active radiation,particularly in China.Consequently,accurate large-scale photosynthetically active radiation data will offer valuable scientific data support for related research efforts.In this paper,we used the data from the China Meteorological Administration and the China Ecosystem Research Network,and constructed the total radiation data of national scale long time series on the basis of the“mixed model”.By integrating the constructed photosynthetically active radiation scheme for diverse climatic regions,which was estimated using total radiation data,we successfully obtained reconstructed photosynthetically active radiation data that exhibited high accuracy and passed stringent testing.The time range of this dataset is 2015–2020.