地质通报
地質通報
지질통보
GEOLOGICAL BULLETIN OF CHINA
2014年
10期
1621-1628
,共8页
赵信文%罗传秀%陈双喜%黄长生%郑卓%董浩刚%曾敏%陈雯%刘凤梅%黎义勇%邵磊
趙信文%囉傳秀%陳雙喜%黃長生%鄭卓%董浩剛%曾敏%陳雯%劉鳳梅%黎義勇%邵磊
조신문%라전수%진쌍희%황장생%정탁%동호강%증민%진문%류봉매%려의용%소뢰
珠江三角洲%孢粉分析%全新世%定量气候重建
珠江三角洲%孢粉分析%全新世%定量氣候重建
주강삼각주%포분분석%전신세%정량기후중건
Pearl River Delta%pollen analysis%Holocene%quantitative climate reconstruction
依据珠江三角洲QZK6钻孔孢粉组合特征及AMS 14C测年结果，基于CONISS软件对剖面孢粉组合进行分带分析，其结果分为A、B、C和D四个孢粉带。根据10981a cal BP以来的孢粉组合特点，结合东亚孢粉数据库中位于广东的122个天然植被下的表层土壤样点的孢粉组成特征，利用软件Polygon 1.5定量重建了QZK6孔的全新世古气候参数。结果显示，全新世气候基本以暖湿为主，总体趋势为凉干-热湿-温凉；D带（10981~8500a cal BP）年均温度为21.7~22.1°C，年降水量1778~1888mm，年均温度和年降水量均比较高；C带（8500~8105a cal BP）年均温度为21.9~22.3°C，年降水量为1845~1929mm，达到各带中最高值；B带（8105~4343a cal BP）年均温度和年降水量开始降低，年均温度为20.8~21.7°C，年降水量为1595~1806mm。人类活动从B带开始增强(在A带达到最强)；A带（4343a cal BP至今）年均温度为20.3~21.5°C，年降水量为1587~1765 mm，为各带中年均温度最低、年降水量最少的阶段。
依據珠江三角洲QZK6鑽孔孢粉組閤特徵及AMS 14C測年結果，基于CONISS軟件對剖麵孢粉組閤進行分帶分析，其結果分為A、B、C和D四箇孢粉帶。根據10981a cal BP以來的孢粉組閤特點，結閤東亞孢粉數據庫中位于廣東的122箇天然植被下的錶層土壤樣點的孢粉組成特徵，利用軟件Polygon 1.5定量重建瞭QZK6孔的全新世古氣候參數。結果顯示，全新世氣候基本以暖濕為主，總體趨勢為涼榦-熱濕-溫涼；D帶（10981~8500a cal BP）年均溫度為21.7~22.1°C，年降水量1778~1888mm，年均溫度和年降水量均比較高；C帶（8500~8105a cal BP）年均溫度為21.9~22.3°C，年降水量為1845~1929mm，達到各帶中最高值；B帶（8105~4343a cal BP）年均溫度和年降水量開始降低，年均溫度為20.8~21.7°C，年降水量為1595~1806mm。人類活動從B帶開始增彊(在A帶達到最彊)；A帶（4343a cal BP至今）年均溫度為20.3~21.5°C，年降水量為1587~1765 mm，為各帶中年均溫度最低、年降水量最少的階段。
의거주강삼각주QZK6찬공포분조합특정급AMS 14C측년결과，기우CONISS연건대부면포분조합진행분대분석，기결과분위A、B、C화D사개포분대。근거10981a cal BP이래적포분조합특점，결합동아포분수거고중위우엄동적122개천연식피하적표층토양양점적포분조성특정，이용연건Polygon 1.5정량중건료QZK6공적전신세고기후삼수。결과현시，전신세기후기본이난습위주，총체추세위량간-열습-온량；D대（10981~8500a cal BP）년균온도위21.7~22.1°C，년강수량1778~1888mm，년균온도화년강수량균비교고；C대（8500~8105a cal BP）년균온도위21.9~22.3°C，년강수량위1845~1929mm，체도각대중최고치；B대（8105~4343a cal BP）년균온도화년강수량개시강저，년균온도위20.8~21.7°C，년강수량위1595~1806mm。인류활동종B대개시증강(재A대체도최강)；A대（4343a cal BP지금）년균온도위20.3~21.5°C，년강수량위1587~1765 mm，위각대중년균온도최저、년강수량최소적계단。
Based on the Pearl Delta QZK6 drill hole sporo-pollen assemblage characteristics and AMS 14C dating results, the authors determined four pollen assemblages from A to D by using CONISS software. Moreover, according to the characteristics of the sur-face-soil pollen composition induced from the 122 existing samples for the native vegetation environment in Guangdong region of the East Asian Pollen Data Bank, the paleoclimate parameters, including paleoannual temperature and paleo-annual precipitation, were quantitatively reconstructed since 10981a cal BP by Polygon 1.5 software. Consequently, Zone D, 10981~8500a cal BP, was warmer and more humid, with annual temperature of 21.7~22.1° C and annual precipitation of 1778~1888mm; Zone C, 8500~8105cal BP, 21.9~22.3°C and 1845~1929mm, was the warmest and most humid among the four zones;Zone B, 8105~4343a cal BP, had the following features:the temperature and precipitation decreased to 20.8~21.7°C and 1595~1806mm with increasing human ac-tivity (though such an activity would reach its strongest in Zone A);Zone A, 4343a cal BP to the present, 20.3~21.5° C and 1587~1765mm, has had the lowest temperature and humidity among the four zones.
