摘要
利用干燥度分析各地区干旱程度,吉良龙夫的干湿度指数适合于东亚的季风气候,特别是东北林区。从黑龙江省50年来干燥度平均值变化趋势可以看出,黑龙江省50年来向着变干的趋势发展。根据Kira的干燥度在气候类型中的划分范围,黑龙江省已由湿润类型(Humid)变为半湿润类型(Semi-humid)。
We analyzed the arid degree in any district by the aridity index. Aridity index of Kira fit to East Asia which with monsoon climate,especially to northeast forest of China. The change tendency of average value of aridity index reflected that it tended to be arid in the past fifty years of Heilongjiang province. According to the aridity index of Kira which could differentiate the climate types,it have changed from humid type to semi-humid type.
出处
《黑龙江农业科学》
2007年第6期37-39,48,共4页
Heilongjiang Agricultural Sciences
关键词
干湿指数
平均值
气候类型
aridity index
average value
climate types
