本文選題：侏羅紀 + 氣候分區(qū)　； 參考：《地學前緣》2017年01期

【摘要】：以古生物學和沉積學資料為主,結(jié)合地球化學和植物化石氣孔器參數(shù)等資料系統(tǒng)分析了中國侏羅紀的氣候特征、氣候分區(qū)及其演變過程。侏羅紀時期的氣溫明顯比現(xiàn)代為高,但無論是溫度還是濕度都經(jīng)歷了強烈的變化,可劃分為早侏羅世早中期、晚期,中侏羅世早、晚期以及晚侏羅世等5個演化階段,各階段氣候分區(qū)特征明顯。其中,早侏羅世早中期(大致為埃唐日期—普林斯巴赫期)可劃分為5個氣候區(qū),自北而南依次為黑龍江東部烏蘇里溫涼氣候區(qū)、北方暖溫帶潮濕氣候區(qū)、東南熱帶-亞熱帶潮濕氣候區(qū)、西南熱帶-亞熱帶半干旱半潮濕氣候區(qū)以及西藏—滇西熱帶海洋干旱氣候區(qū)。其中,北方暖溫帶潮濕氣候區(qū)范圍最大,占據(jù)了昆侖—秦嶺—大別山一線以北的廣大地區(qū)。早侏羅世晚期(圖阿爾期)總體升溫并趨于干旱化,依然可以劃分為5個氣候區(qū),但北方暖溫帶潮濕氣候區(qū)由于南界的大幅度向北移而大為縮小,范圍最廣的是中部熱帶-亞熱帶半干旱-半潮濕氣候區(qū)。中侏羅世早期(阿倫期—巴柔期)氣溫較早侏羅世晚期明顯下降,北方暖溫帶潮濕氣候區(qū)南界向南推移,基本恢復到了早侏羅世早中期的范圍,東南地區(qū)為熱帶-亞熱帶半干旱-半潮濕氣候。中侏羅世晚期(巴通期—卡洛維期)又復升溫趨干,氣候區(qū)界線再度北移,暖溫帶潮濕氣候區(qū)范圍再次大幅度縮小到燕遼及東北地區(qū),熱帶-亞熱帶半潮濕-半干旱氣候區(qū)范圍擴大至整個華北與西北地區(qū),南方則為熱帶-亞熱帶干旱氣候區(qū)。晚侏羅世氣溫進一步升高,暖溫帶潮濕氣候區(qū)退縮至東北一隅,除滇、藏熱帶海洋干旱氣候區(qū)外,其他廣大地區(qū)均為熱帶-亞熱帶干旱氣候,且多地出現(xiàn)荒漠化。
[Abstract]:Based on paleobiology and sedimentology data, the climatic characteristics, climatic zoning and evolution of Jurassic in China were systematically analyzed by combining geochemistry and plant fossil stomatal apparatus parameters. The temperature of the Jurassic period is obviously higher than that of the modern period, but both the temperature and the humidity have undergone strong changes, which can be divided into five evolution stages: the early middle Jurassic, the late Jurassic, the middle Jurassic early, the late Jurassic and the late Jurassic. The climatic zoning characteristics of each stage are obvious. Among them, the early and middle Jurassic (about the Etang date to Plinsbach period) can be divided into five climatic regions, from north to south are the east of Heilongjiang Wusuli temperate climate zone, the northern warm temperate zone humid climate area, The southeastern tropic-subtropical humid climate zone, the southwest tropical subtropical semi-arid and semi-humid climate zone and the Xizang-western Yunnan tropical arid marine climate zone. Among them, the warm temperate zone in the north has the largest range, occupying the vast area north of Kunlun-Qinling-Dabie Mountains. In the late early Jurassic (Tuar period), the temperature increased and tended to drought, and it can still be divided into 5 climatic regions. However, the warm and humid climate in the northern warm temperate zone is greatly reduced by the large northward movement of the southern boundary. The most extensive is the central tropical-subtropical semi-arid-semi-humid climate zone. The temperature of the early Middle Jurassic (Arlen-Barrou period) was obviously lower than that of the late Jurassic, and the southern boundary of the warm temperate humid climate zone in the north moved southward, and basically recovered to the range of the early and middle Jurassic. Southeast for the tropical-sub-tropical semi-arid-semi-humid climate. In the late Middle Jurassic period (Baton-Carlowe period), the climatic zone was drier again, the boundary of climate zone moved northward again, and the range of warm temperate humid climate region was reduced to Yanliao and northeast area again. The range of tropical-subtropical semi-humid-semi-arid climate zone is extended to the whole North and Northwest China and the south is the tropical-subtropical arid climate zone. The temperature of the late Jurassic increased further, and the humid climate of warm temperate zone retreated to a corner of northeast China. Except Yunnan and Tibetan tropical marine arid climate regions, all the other regions were tropical to subtropical arid climate, and desertification occurred in many places.
【作者單位】： 中國石油天然氣股份有限公司勘探開發(fā)研究院;提高石油采收率國家重點實驗室;中國石油天然氣集團公司油氣儲層重點實驗室;中國地質(zhì)大學(北京);中國科學院南京地質(zhì)古生物研究所;蘭州大學;
【基金】：國家重點基礎研究發(fā)展計劃“973”項目(2012CB822003) 國家自然科學基金項目(40372021) 國際地質(zhì)聯(lián)合會全球?qū)Ρ扔媱濏椖?IGCP632)
【分類號】：P532

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本文編號：1794525