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| 福建深沪湾海底古森林遗迹分布区全新世自然环境演变 | |
| 引用本文： | 王绍鸿,俞鸣同,唐丽玉,赵希涛.福建深沪湾海底古森林遗迹分布区全新世自然环境演变[J].第四纪研究,2001,21(4):352-358. |
| 作者姓名： | 王绍鸿 俞鸣同 唐丽玉 赵希涛 |
| 作者单位： | 1. 福建师范大学地理研究所,福州 350007 2. 中国科学院地质与地球物理研究所,北京 100029 |
| 基金项目： | 国家自然科学基金（批准号：49772136）资助项目 |
| 摘 要： | 本文根据福建深沪湾潮间带古森林遗迹分布区的两个钻孔岩芯的粒度、有孔虫、孢粉、古土壤和14C年代等方面的分析测试资料,恢复了该区全新世自然环境演变与海底林生长与掩埋的历史.以油杉为代表的古森林在该区出现于9420aB.P.左右,繁盛于8090～7140aB.P.在7200～6800aB.P.间的中全新世早期,该区气候热暖潮湿,海面不断升高.由于侵蚀基准面的抬高,深沪湾西部的河流发生了加积作用,从而掩埋了该古油杉林.当中全新世中期古海面上升到钻孔所在的位置时,该古森林遭到了灭顶之灾.晚全新世以来,该区一直处于潮间带环境,与今日只有微小的差别. |
| 关 键 词： | 海底林 油杉 自然环境演变 深沪湾 全新世 |
| 收稿时间： | 2001-02-08 |
| 修稿时间： | 2001年2月8日 |
NATURAL ENVIROMENT EVOLUTION DURING HOLOCENE IN SUBMERGED FOREST AREA OF SHENHU BAY, FUJIAN PROVINCE |
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| Wang Shaohong,Yu Mingtong,Tang Liyu,Zhao Xitao,.NATURAL ENVIROMENT EVOLUTION DURING HOLOCENE IN SUBMERGED FOREST AREA OF SHENHU BAY, FUJIAN PROVINCE[J].Quaternary Sciences,2001,21(4):352-358. | |
| Authors: | Wang Shaohong Yu Mingtong Tang Liyu Zhao Xitao |
| Institution: | 1. Institute of Geography, Fujian Normal University, Fuzhou 350007; 2. Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029 |
| Abstract: | According to the analysis of grain-size, foraminifera, spore-pollen, and 14C dating for two drill cores from submerged forest area in the tide-zone of Shenhu bay, Fujian province, we reconstructed the history of the natural enviroment evolution during the Holocene in the area, and the history of the paleoforest for both growth and being covered. The paleoforest represented with Keteleeria appeared about 9 420aB.P. and luxuriated during 8 090-7 140aB.P. In the early stage of mid-Holocene (7 200-6 800 aB.P.), the climate was warm and moist; the sealevel rose continuously. As flurosion basis rose up, the fluvial deposition occurred in the west of Shenhu bay that buried the paleoforest. In the middle stage of mid-Holocene, the scalevel approached the drill area, the paleoforest was submerged with sealevel rise. Since late Holocene, the area became an enviroment of tide-zone with little difference from today. |
| Keywords: | paleoforest Keteleeria natural enviroment evolution Shenhu bay Holocene |
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