论燕北地区辽代的气候特点

RECONSTRUCTION OF CLIMATIC SERIES OF THE NORTH YANSHAN MOUNTAINS REGION IN LIAO DYNASTY

本文利用《辽史》中“帝王纪”、“游幸表”、“食货志”和同时代“宋人使辽语录”中所记载的有关旱、涝、冻灾记录，对928～1109年共182年间燕北地区的历史气候进行了复原。研究结果表明，辽代燕北地区的干湿变化过程中，早期以干为主，中、晚期以湿为主。1080年前后为一气温剧烈下降时期，比黄淮海地区的同期变化要早约30年。

The North Yanshan Mountains Region lies in the eastern part of the .InnerMongolia Autonomous Region. From 916 A. D. to 1125 A. D., Qidan nationalityconquered this region and founded their minority reign. The objective of this paperis to reconstruct the climatic series during the Liao Dynasty.At first, according to the Liao Dynasty Historical Book and the Travels ofthose messagers coming from the Northern Song Dynasty, the author gathered all ofthe records of drought flood, and the extreme low temperature. Then based on thedamagement of droughts and floods, the dry / wet series of the research region isexpressed by four grades: drier, the driest the wettest wetter, which are denotedby the numbers 1, 2, 4, 5 respectively. The reconstructed regional dry / wet series isfrom 928 A.D. to 1109 A.D., total of 182 years. The following conclusions weresuggested:(1)From 920 A.D. to 979 A.D., there were more drought records, the climatewas drier. It was the driest during 930' s, 960' s, and 970' s.(2)From 980 A.D. to 1029 A.D., the amount of floods had increased obviously,the climate was wetter. It was wettest during 990' s, 1010' s.(3)From 1030 A.D. to 1079 A.D., both records of drought and flood were less.The climate was nomoral and had a little change.(4)From 1080 A.D. to 1109 A.D., the amount of floods had increased again.The climate became wetter again and was wetter than the period from 980 A.D. to1029 A.D.(5)About from 1080 A.D., the temperature had dropped rapidly. This abruptchange happened 30 years earlier than the region of the North China.