利用1961 ～2010年皇甫川流域主要气候要素数据和1979 ～ 2000年准格尔旗统计数据,采用净初级生产力(NPP)计算模型和数理统计方法,分析了该流域陆地植被NPP和农业生态系统生产功能(粮食生产)的时空特征.研究表明:①1961～2010年皇甫川流域NPP的总体变化趋势不明显,但年际变化显著.各乡镇NPP动态变化一致,且年际变化显著.流域NPP空间差异明显,东南部较高、西北部相对较低,与降水量的空间分布一致.②1979～2000年皇甫川流域各乡镇粮食单产增长趋势明显,且年际波动显著,在有些年份降水量对粮食单产的影响是决定性的.粮食单产空间差异明显,北部高,东南部居中,西部低.③皇甫川流域NPP和粮食单产的时间相关性较为显著,而空间相关性不明显.这与NPP主要受自然条件影响,而粮食生产受到自然条件、农业政策和科技投入等综合影响有关.%The main climatic factors data in Huang fu-chuan basin from 1961 to 2010 and statistics data in Zhunge'er from 1979 to 2000 are used to analyze spatial and temporal features of terrestrial net primary productivity (NPP) and the production function (food production) of agro-ecosystems, by using NPP mathematical model and statistical methods. The results show that: firstly, from 1961 to 2010 the overall change trend of NPP in Huang fu-chuan basin is not obvious, but inter-annual variation of NPP is significant. The dynamics of township NPP is the same, and the inter-annual variation is also significant. The spatial difference of NPP is significant, the southeast is high and the northwest is relatively low, with the same spatial variation of precipitation. Secondly, grain yield per unit area of township in Huang fu-chuan Basin has significant growth trend, and inter-annual fluctuation is significant, the impact of precipitation on the grain yield is a decisive in some years. Spatial difference of grain yields per unit area is obvious, the northern is high, the southeast is middle and the western is low. Thirdly, in Huang fu-chuan basin the temporal correlation between NPP and grain yield per unit area is significant, while the spatial correlation is not obvious. Because NPP is mainly affected by natural conditions, and grain production is affected by many factors such as natural conditions, agricultural policies, and science and technology inputs etc.
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