汉代四川气候初步研究

A Preliminary Study on the Climate of Sichuan in the Han Dynasties

前人对汉代气候的研究系探讨汉代四川气候的基础。从对汉代四川气候敏感的相关动植物分布分析,再结合孢粉所包含的气候信息,可知两汉时期气温暖于今日,期间虽偶有起伏,但由于盆地周围高山的遮挡,气候变化并不如北方一般剧烈。四川盆地内地形复杂,各地情况并不完全相同,川西平原及丘陵地区温度较高,而川西高原地区温度偏低。两汉时期四川气候湿润,雨水较多。

The previous study on the climate of the Han Dynasties is the basis of exploring the climate of Sichuan in the Han Dynasties.By analyzing the distribution of the related climate-sensitive fauna and flora,as well as the climate information indicated by the sporopollen,it is known that the temperature of Sichuan in the Western and Eastern Han Dynasties is warmer than that of today.Because of the mountains sheltered around the basin,climate change is not as intense as the north,although there were occasional ups and downs during the period.The situation is not exactly the same throughout the Sichuan Basin,the temperature of the western plain and the rolling country is higher while that of the western plateau area is lower.In addition,during the Han Dynasties,Sichuan was featured by humid climate and abundant rain.