中文摘要：

本研究以分辨率为0.1°×0.1°的植被、土壤和气象数据为驱动,利用大气-植被相互作用模型（AVIM2）模拟了祁连山地区1958~2008年植被净初级生产力（NPP）,并对近51年来祁连山地区植被NPP对气候变化的响应进行了分析。结果表明：近51年来祁连山植被（常绿针叶林、落叶针叶林、草地、灌木、农田）在气温升高和降水量增加的影响下,NPP总量呈增加趋势,且增加速率依次为：农田〉常绿针叶林〉落叶针叶林〉草地〉灌木。植被NPP的变化与气温和降水量的变化均呈正相关关系,且温度变化对植被NPP的影响大于降水,即温度变化是影响祁连山地区植被NPP变化的主导因素。从区域平均来看,气温年平均上升速率为0.043℃·a-1,降水量的平均增加速率为1.355mm·a-1,在气温和降水量的共同作用下,1958~2008年祁连山地区植被NPP总量呈增加趋势,平均增加速率为0.718g·m-2·a-1。

英文摘要：

Based on the 0.1°×0.1°resolution map of vegetation type,soil texture and meteorological data,the atmosphere-vegetation interaction model（AVIM2）was driven to simulate the net primary productivity（NPP）in Qilian Mountains region from 1958 to 2008,and the response of NPP to climate change were also analyzed in our paper.The results shows that：owning to the increasing of temperatures and precipitation effects,the vegetation（evergreen coniferous forest,deciduous coniferous forests,grasslands,shrubs,farmland）NPP in Qilian Mountains showed an increasing trend in total during the past 51 years,and the rate of increase were：farmland〉evergreen coniferous forest〉coniferous deciduous forest〉grassland〉shrub.Changes of vegetation NPP were positively correlated with the changes of temperature and precipitation,and the effects of temperature change on vegetation NPP is greater than that of precipitation,and tempera-ture change effects turns out to be the dominant factors to NPP changes in Qilian Mountains.On the whole study region,the annual average temperature increased 0.043 ℃ per year,the average rate of increase in precipitation is 1.355mm·a-1,under the combined effect of temperature and precipitation,the vegetation NPP in Qilian Mountains showed an increasing trend in total during 1958~2008,the average increase rate was 0.718g·m-2·a-1.