中文摘要：

通过对塔里木盆地1949-1990年自然灾害的统计分析,结果表明：该地区自然灾害以洪灾、暴雨灾害、风灾及雹灾发生较为频繁。在年际分布上,各主要自然灾害的发生频次总体上呈较明显的波动增长趋势并且灾次的频发期具有周期性变化的特点,在年内分布上,灾害频发期多出现在春、夏季节。在空间分布上,表现为灾害次数具有明显的区域性,在空间上主要呈条带状或块状的分布格局。从行政区划上看,塔里木盆地有2个自然灾害频发区,分别是阿克苏地区和喀什地区。总的分布特点是：山区多,山区与盆地交界地带多,盆地内部较少;灾害发生频次以盆地北部最为集中,表现出北多南少、西多东少的基本格局。

英文摘要：

Selecting natural disasters frequency of the cities and counties in Tarim Basin from 1949 to 1990,we analyzed the temporal and spatial distribution characteristics and regularities of the natural disasters in this region mainly of the flood disaster,heavy rains disaster,windstorm and hail damage.The results showed that every of the four disasters showed a trend of waved growing,and occurred in spring and summer.The spatial distribution of each disaster had a disparity： Flood mainly happened in nothern part of Tarim Basin mainly in Aksu area such as Wushi county,Wensu county,Baicheng county,and western part of Tarim basin mainly in the counties around Kashgar cities and stretching south to Yecheng county.Heavy rains disaster occurred mainly in the counties which are near the mountains such as the belt of Wushi-Wensu-Baicheng-Kuche,in Kashgar,there was a sporadic distribution,too.Windstorm showed a spacial continuous distribution along the axle of northeast-southwest,YuePuHu county,Aksu city,KuChe county were the windstorm serious area.Obviously hail were concentrated in Aksu area mainly distributed in WuShi county,Aksu city,Xinhe county and Baicheng county.