中国国家生态屏障区1km分辨率植被净初级生产力数据集（2000-2015）

植被净初级生产力（Net Primary Productivity，NPP）能够反映区域和全球尺度植被的固碳能力。作者以国家生态屏障区为研究区，利用MOD13A2 NDVI、中国植被图、太阳总辐射值及温湿度等数据计算出光合有效辐射（APAR）；根据区域蒸散模型模拟水分胁迫因子；将光合有效辐射和实际光能利用率输入CASA模型，计算得到国家生态屏障区1km分辨率植被净初级生产力数据集（2000-2015年）。经过比较，数据结果与2000、2005、2010、2015年的MOD17A3 NPP数据具有较好的一致性。本数据集为2000-2015年每年的NPP栅格数据，投影坐标系为WGS_1984_Albers，空间分辨率为1 km，单位是gC/m&sup2。数据存储为.tiff格式，共包括16个文件，数据量为101 MB（压缩为1个文件，53.8 MB）。与本数据相关的科学发现论文已经发表在《地理研究》2019年第38卷第9期。

Net Primary Productivity (NPP) reflects the carbon sequestration capacity of vegetation at both regional and global scales. This study took the National Ecological Barrier Zone as the research area. The authors calculated Photosynthetically Active Radiation (APAR) using multiple datasets including MOD13A2 NDVI, the Vegetation Map of China, total solar radiation, temperature and humidity data. The water stress factor was simulated via a regional evapotranspiration model. Subsequently, the 1 km-resolution NPP dataset of the National Ecological Barrier Zone for the period 2000–2015 was generated by inputting APAR and actual light use efficiency into the CASA model. Validation results showed that the dataset has good consistency with the MOD17A3 NPP data from 2000, 2005, 2010 and 2015. This dataset consists of annual NPP raster data from 2000 to 2015, with the projected coordinate system set as WGS_1984_Albers, a spatial resolution of 1 km, and a unit of gC/m². The data are stored in TIFF format, totaling 16 files, with an uncompressed size of 101 MB (compressed into a single file of 53.8 MB). The relevant scientific discovery paper was published in *Geographical Research*, Volume 38, Issue 9, 2019.

搜集汇总

背景与挑战

背景概述

该数据集提供了2000-2015年中国国家生态屏障区1公里分辨率的植被净初级生产力（NPP）栅格数据，基于CASA模型利用遥感和气象数据生成，用于评估植被碳汇能力。数据具有长时间序列和高空间分辨率的特点，与MOD17A3 NPP数据一致性高，适用于地理学和生态学相关研究。