再论唐代长江上游地区的荔枝分布北界及其与气温波动的关系

Northern Boundary of litchi's Distribution in the Upper Yangtze of Tang Dynasty and It's Relationship with the Temperature Fluctuations

通过对相关文献的全面梳理和研究,本文认为唐代长江上游地区的荔枝分布北界并非此前学界所普遍接受的成都和万州一线,而只到达忠州(今重庆忠县)和涪州乐温县(今重庆长寿区)。唐代该地区的荔枝分布呈现集中于川江两岸峡谷的特点,这种分布格局与川江峡谷地区特殊的区域小气候直接相关,因此不能作为唐代气候较现在温暖湿润的证据。

By a comprehensive research on the literature,this paper holds that the northern boundary of Litchi＇s distribution in the upper Yangtze of Tang Dynasty,is not the Chengdu-Wanzhou line,which was generally accepted by earlier scholars.It＇s only reach to Zhongzhou（now Zhong County） and Fuzhou（now Changshou County）.Nearly all of litchi＇s distribution in this region were in both sides of the Yangtze River valley.This distribution pattern is directly related to the micro-climate of particular region which located in the Yangtze River valley area.Therefore,it can not be served as the evidence that the climate in Tang Dynasty was warmer and wetter than present.