中文摘要：

在气候变化日益加剧的情形下,制定科学合理的气候变化应对策略,需要准确把握区域气候变化的时空特征与规律。文中以内蒙古为研究区域,分析了1969-2008年间区域温度和降雨量的年值和季节值变化趋势及时空格局,主要结论：1）年均温度明显升高,有54.82%地区累计升高1.6-2.4℃,有29.95%地区累计升高2.4-3.2℃,无降低区域,在空间上,温度升高区域主要集中在除阿拉善盟和鄂尔多斯市的大部分地区;从降雨量变化来看,63.05%区域变化在±1mm/a,27.58%地区40年来累计减少40mm以上,9.37%地区略有增加趋势,从空间上分析,降雨量减少地段主要集中在除阿拉善盟、鄂尔多斯市以及呼伦贝尔北4市旗之外的大部分地区。2）从季节日均温度、降雨量的变化来看,温度变化4个季节均以升高为主,增幅规律为春季〉冬季〉秋季〉夏季;降雨量增与减变化存在季节差异,春季有18.39%地段明显增多,而其它季节均以不同程度的减少为主,其中夏季减少最多,面积达35.86%。3）近40年来,温度变化存在明显的突变点,但是突变时间存在空间分异。4）总之,由于温度的明显升高和降雨量不同程度的减少,将驱使区域气候旱化程度增强,这将对农牧业生产带来不利影响,亟待制定科学有效的中长期应对方略。

英文摘要：

Developing scientific and rational coping strategies to climate change need to accurately grasp the spatialtemporal characteristics and laws of regional climate change in the case of increasing climate change. In this study,spatiotemporal pattern,annual and seasonal changes of regional temperature and precipitation in Inner Mongolia during 19692008 were researched. The average annual temperature increased significantly,54. 82% of the research area was cumulatively increased 1. 62. 4℃ and 29. 95% of the area was increased 2. 43. 2℃. There was no temperature decreased area and the elevated temperature areas were in most areas of Inner Mongolia except Alashan League and Ordos City. Results of the rainfall variation analysis show that 63. 05% of the area changed ± 1mm / a,27. 58% of the area was cumulatively decreased by 40mm in 40 years,9. 37% of the area showed an increasing rainfall trend. From the spatial analysis,the area of precipitation decrease was mainly concentrated most areas of Inner Mongolia in addition to Alashan League,Ordos City,and North 4cities of Hulunbeier City. From the point of average daily temperature and precipitation changes of the four seasons,mainly showed increasing in temperature and the law was spring winter autumn summer; there was seasonal difference of the change of precipitation,18. 39% of the area significantly increased in spring,reduced in different degrees in the other seasons which in summer was the largest,account for 35. 86% of the research area. There was a catastrophe point exists in the change of temperature and the time has special significant heterogeneity. Shortly,obviously increasing temperature and decreasing precipitation will enhance the drought extent of the regional climate,which have a bad impact on agriculture and animal husbandry. Therefore,longterm scientific and efficient coping strategies must urgently be drawn up.