The little ice age indicated by the 18o curve is divided into five cold valleys and four warm peaks 其中，中世纪暖期呈现两峰夹一谷变化，小冰期划分为5个冷谷4个暖锋。
2.
Discussion is concentrated upon the following issues : the new evidence of global warming , three special periods ( 20th century warming , lia , and mwp ) , and numerical simulations of temperature variations in the last millennium 重点介绍了气候变暖的新证据， 3个特征时期即20世纪气候变暖、小冰期( lia ) 、中世纪暖期( mwp )和近千年温度变化模拟的结果。
3.
In contrast , the consensus view among paleoclimatologists is that the medieval warming period was regional , that the worldwide nature of the little ice age is open to question and that the late 20th century saw the most extreme global average temperatures 然而，古气象学家的共识与之不同，他们认为中世纪暖期属于区域现象，全球性的小冰期则尚无定论，而且20世纪后叶的全球平均气温是最极端的情形。
4.
And during the little ice age ) . the main discrepancy of climatic and environmental changes of the southern margin of tarim basin and the eastern region of china appeared to be the collocation patterns which were the synchronism in cold or warm conditions and the difference in hydrological conditions . meanwhile , the discoveries of abrupt climate changes in the past have raised an urgent request for paleoclimatic and paleoenvironmental records ( 2 ) 、中全新世气候适宜期( 6 . 7 3 . 0kab . p . )尤其是近4 . 0ka以来及小冰期，南疆塔里木盆地南缘与我国东部季风区存在着冷、暖同步，干、湿相异的特征；并以相对冷湿? ?相对暖干的演变模式与我国东部季风区的相对冷干? ?相对暖湿的特征相区别。
5.
During the medieval warm period , the lasting time is shorter and shorter from the south to the north in china , and the east china is more obvious than the central china ; the beginning time of the little ice age in shennongjia region ( 1480aad ) is later than that in other regions ( 1420aad ) , but they all display a persistent decrease process of temperature 与中国东亚季风区各种温度记录对比表明，东汉时期是一较暖的时期，但冷暖程度不同；中世纪暖期大致从南往北时间跨度越短，中部地区没有东部明显；神农架小冰期开始时间( 1480aad )晚于其它记录( 1420aad ) ，都显示了持续的降温过程。
6.
The dry / wet changes of surrounding area of bohai sea during past 500 years are divided into 7 stages , based on dry / wet indexes ( d / w ) of this area from 1470 to 1985 then , the changes of dry / wet spatial types ( d / wst ) and its related dry / wet regional different iation ( d / wrd ) features among different stages are analyzed . the results show that there are 4 main kinds of d / wst in this area , whose notability and spatial distribution features in different stages are apparently different , which reflects , very well , the changing process of the d / wrd of this region in past500 years . further analysis also presents that , in warmer period , the d / wst and the d / wrd patterns are relatively unsteady , meanwhile , the dry / wet changing difference among different parts of the region is relatively great , but , in colder period , it is just on the contrary . however , in the most severely cold period of the little ice age , t he area ' s d / wst and the d / wrd pattern sareveryu nsteady , and its d / wrd extenti salsot he high estin the whole past 500 years 用研究区1470 1985年的旱涝等级资料,划分了该地区500年来旱涝变化的7个阶段,讨论了不同阶段间旱涝型的变化及其旱涝区域分异意义,结果表明, 500年来研究区有4类主要旱涝型,各型旱涝在不同阶段的重要程度及场型特征均有较大差异,深刻反映了该地区500年来旱涝区域分异特征的变化,通过对500年来旱涝变化与温度变化的对比发现,较温暖期,研究区的旱涝型及旱涝区域分异格局较多变,旱涝变化的区域差异性较大,较寒冷期,旱涝型及区域分异格局较稳定,旱涝变化的区域差异性较小,而在小冰期最寒冷阶段,旱涝型及旱涝区域分异格局的变动十分频繁,旱涝变化的区域差异性亦最大
