中文摘要：

对2002—2006年MODIS数据进行处理，统计得出5a间全国年均陆地植被净初级生产力（NPP）为1．5PgC；5a全国NPP组成分析显示，NPP绝大部分集中在0～300gC／m^2区间，所占比例约为70％～85％；全国大部分地区年NPP呈现出减少的趋势，受城市扩张、新增工业用地等人类活动影响显著。

英文摘要：

In this paper, MODIS data from 2002 to 2006 were processed, the terrestrial NPP in China were calculated through statistic analysis, and then the results were analyzed. The results show that, from 2002 to 2006, the average terrestrial NPP was 1.5 PgC. The five - year national terrestrial NPP composition analysis indicates that most of the national NPP concentrated in 0 - 300 gC/m^2, the percentage of NPP was about 70% - 85% , and the annual NPP in most parts of China showed a downward trend, which was significantly affected by urban expansion, new industrial land and other human activities.