中文摘要：

利用1950—2004年热带气旋降水和热带气旋强度资料分析我国大陆热带气旋降水特征的变化及其与热带气旋活动的关系.结果表明：自1950年以来,我国大陆热带气旋降水年总量具有显著的年际变化和年代际变化特点,20世纪50年代、60年代后期到70年代初期和90年代中期以来是降水的偏少期;60年代前期以及70年代中期到90年代初期为降水的偏多期.自20世纪50年代以来,平均过程降水面积具有线性减小的趋势,而平均过程降水强度具有线性上升的趋势,并自90年代中期以后,其年际振荡的幅度随时间而增强.我国大陆降水频数与西北太平洋热带风暴以上的热带气旋频数具有显著的正相关关系,而过程降水强度与西北太平洋热带气旋最大强度,特别是登陆热带气旋强度关系密切,它们表现出非线性关系.

英文摘要：

The variation of precipitation by tropical cyclones （TC） over Chinese Mainland and the relation between the tropical cyclone precipitation （TCP） and the TC activity were analyzed by use of the TCP and TC intensity data during 1950—2004.The results show that the total quantity of the TCP over Chinese Mainland is characterized by evident inter-annual and inter-decadal variations,that is,less precipitation during the 1950 s,from the late 1960 s to the early 1970 s and since the middle 1990 s,and more precipitation during the early 1960s and from the late 1970 s to the early 1990 s.The mean process precipitation area has had a linear decrease since the 1950 s,but the mean process precipitation intensity （depth） has had a linear increase and its inter-annual variation has become prominent since the late 1990 s.The frequency of the TCP over Chinese Mainland has significant positive correlation to that of TC over Northwest Pacific Ocean,while the process precipitation intensity is closely related to the maximum TC intensity,especially the landing TC intensity of Chinese Mainland,and they achieve a nonlinear relationship.