中文摘要：

利用美国环境预测中心的再分析气象资料和由GIMMS NDVI资料生成的叶面积指数对BEPS生态模型进行驱动,模拟分析了2000—2005年亚洲东部地区总初级生产力（GPP）和总净初级生产力（NPP）的时空变化特征.在进行区域模拟计算前,使用15个站点不同生态系统的GPP观测数据及1300个样点的NPP观测数据对模型进行验证.结果表明：BEPS模型能较好地模拟不同生态系统的GPP和NPP变化,模拟的GPP与观测数据之间的R2为0.86～0.99,均方根误差（RMSE）为0.2～1.2g C·m-2·d-1;BEPS模拟值能够解释78%的年NPP变化,其RMSE为118g C·m-2·a-1.2000—2005年,亚洲东部地区GPP和NPP总量平均值分别为21.7和10.5Pg C·a-1.NPP和GPP具有相似的时空变化特征.研究期间,NPP总量的变化范围为10.2～10.7Pg C·a-1,变异系数为2.2%.NPP由东南向西北显著减少,高值区（〉1000g C·m-2·a-1）出现在东南亚海岛国家,我国的西北干旱沙漠地区为低值区（〈30g C·m-2·a-1）,其空间格局主要由气候因子决定.不同国家的人均NPP差异很大,其中,蒙古最高,达70217kg C·a-1,远高于中国的人均NPP（1921kg C·a-1）,印度的人均NPP最小,为757kg C·a-1.

英文摘要：

Based on the bi-linearly interpolated meteorological reanalysis data from National Centers for Environmental Prediction,USA and by using the leaf area index data derived from the GIMMS NDVI to run the process-based Boreal Ecosystems Productivity Simulator （BEPS） model,this paper simulated and analyzed the spatiotemporal characteristics of the terrestrial ecosystem gross primary productivity （GPP） and net primary productivity （NPP） in East Asia in 2000-2005.Before regional simulating and calculating,the observation GPP data of different terrestrial ecosystem in 15 experimental stations of AsiaFlux network and the inventory measurements of NPP at 1300 sampling sites were applied to validate the BEPS GPP and NPP.The results showed that BEPS could well simulate the changes in GPP and NPP of different terrestrial ecosystems,with the R2 ranging from 0.86 to 0.99 and the root mean square error （RMSE） from 0.2 to 1.2 g C·m-2·d-1.The simulated values by BEPS could explain 78% of the changes in annual NPP,and the RMSE was 118 g C·m-2·a-1.In 2000-2005,the averaged total GPP and total NPP of the terrestrial ecosystems in East Asia were 21.7 and 10.5 Pg C·a-1,respectively,and the GPP and NPP exhibited similar spatial and temporal variation patterns.During the six years,the total NPP of the terrestrial ecosystems varied from 10.2 to 10.7 Pg C·a-1,with a coefficient of variation being 2.2%.High NPP （above 1000 g C·m-2·a-1） occurred in the southeast island countries,while low NPP （below 30 g C·m-2·a-1） occurred in the desert area of Northwest China.The spatial patterns of NPP were mainly attributed to the differences in the climatic variables across East Asia.The NPP per capita also varied greatly among different countries,which was the highest （70217 kg C·a-1） in Mongolia,far higher than that （1921 kg C·a-1） in China,and the lowest （757 kg C·a-1） in India.