中国东部中新世山旺古海拔与古气候的定量研究  

QUANTITATIVE STUDIES ON PALEOELEVATION AND PALEOCLIMATE OF SHANWANG MIOCENE BASIN,EAST CHINA

作　　者：杨健[1] 王宇飞[1] 孙启高[1] 李承森[1] 

机构地区：[1]中国科学院植物研究所

出　　处：《地学前缘》2002年第3期183-188,共6页Earth Science Frontiers

基　　金：国家自然科学基金资助项目 ( 3 0 0 70 0 46;3 0 0 70 0 5 6);中国科学院项目 (STZ 0 0 3 0 ;KZ95 1B110 5 )

摘　　要：距今 15 .5～ 17Ma的山旺中新世植物群中有 38科 74属为现存属 ,共存分析研究表明 ,它们的现代分布的共存区间为 2 9～ 32°N ,10 9～ 112°E ,海拔为 80 0～ 15 0 0m。依据共存分布区间的常年气候资料 ,获得山旺古气候参数定量数值 :年均温 7.9～ 15 .3℃ ;年较差 2 1.5～ 2 4 .4℃ ;最冷月均温 - 4 .4～3.9℃ ;最热月均温 2 0 .0～ 2 6 .2℃ ;推测中新世山旺地区为亚热带山地气候 ,山旺古湖的海拔为 80 0～ 15 0There are 74 extant genera of fossil seed plants (38 families) found in the Shanwang Miocene flora (15.5～17 million years ago). The coexistent region of these extant genera ranges from the altitude of 800 m to 1 500 m within the latitudes from 29°N to 32°N and longitudes from 109°E to 112°E. The concept of NLR (the nearest living relative) based on recognition of modern genus is adopted and applied in this paper by using the assumption that the fossil and its nearest living relative have similar ecological requirements. The paleoclimate data of Shanwang Miocene basin, based on extant data of above coexistent region cited from climate database of China, are estimated as MAT 7.9～15.3℃, DT 21.5～24.4℃, TCM -4.4～3.9℃, and TWM 20.0～26.2℃, showing a subtropical mountainous climate. The elevation of Shanwang Miocene basin ranges from 800 m to 1 500 m.

关 键 词：中国 东部地区 中新世 古气候 海拔 地质时代 山旺盆地 

分 类 号：P532[天文地球—古生物学与地层学]