南海巽他陆架末次冰期以来的孢粉记录初步研究  

PALYNOLOGICAL RECORDS SINCE THE LAST GLACIAL MAXIMUM ON THE SUNDA SHELF OF THE SOUTH CHINA SEA

作　　者：王晓梅[1] 孙湘君[1] 

机构地区：[1]同济大学海洋地质教育部重点实验室,上海200092

出　　处：《地球科学进展》2005年第8期833-839,共7页Advances in Earth Science

基　　金：国家重点基础研究发展规划项目"地球圈层相互作用中的深海过程和深海记录"(编号:G2000078500);科技基础性工作和社会公益研究专项"中国综合大洋钻探计划预研究"(编号:2003DIB3J114);国家高技术研究发展计划"大洋钻探技术预计划"(编号:2004AA615030)资助.

摘　　要：通过分析沉积速率较高、且有同位素准确测年的南海南部巽他陆架18323柱状样的孢粉记录,分析重建该地区31kaBP以来的植被和气候变化历史。结果表明,末次冰期以前植被主要组成是热带低地雨林,到末次冰期温度降低,热带低地雨林含量减少,草本植物含量剧增,红树林几乎绝灭;再从末次冰期到融冰期气温升高,热带低地雨林回升,对海平面变化反应敏感的红树林含量稳定增加。研究认为末次冰期前到末次冰期气温降低,湿度下降,到融冰期气温波动性回升,海平面升高。This paper presents pollen and spore data from sediments of core 18323 on the continental shelf of the southern South China Sea. The 5.4-m long profile covers the last 31 000 years including the late stage of marine oxygen isotope （MIS） stage 3. The study reveals that the lowland rainforest covered the emerged southern continental shelf of the south China sea before the Last Glacial Maximum and that the lowland rainforest diminished and Herbaeeae expanded on the adjacent islands during the Last Glacial Maximum, indicating cooling and drying during the iee age. During the termination and the Holocene, the expansion of mangroves and lowland rainforest shows warming of the climate, rising of the sea level and the submerging of the shelf.

关 键 词：巽他陆架 孢粉 植被 气温 

分 类 号：P736.2[天文地球—海洋地质]