摘要
利用聚类分析对全国１６０站１９５１～１９９２年的年降水标准化资料做分析，结果可划分为两大区─—干旱半干旱区和非干旱区。在此基础上进行降水区划及降水分布型研究，得出我国干旱半干旱区大致分成９个小区以及它的３种年降水分布型式。
Through cluster analysis of the normalized annual precipitation data for the 160stations in China during the period from 1951 to 1992,it is found that there are two bigregions-the arid and semi-arid region as well as the non-arid region. On the basis of itthe annual rainfall division is made,and the annual rainfall distribution in the arid andsemi-arid region is also studied.The results show that the arid and semi-arid region canbdivided into 9 subdivisions and there are three distribution patterns for annualrainfall.
出处
《应用气象学报》
CSCD
北大核心
1995年第4期501-504,共4页
Journal of Applied Meteorological Science
基金
国家自然科学基金
关键词
降水
特征分析
干旱区
半干旱区
Arid and semi-arid region
Annual rainfall division
Annual rainfall distribution pattern.
