中国海岸带地区第四纪沉积环境变迁研究现状综述

Research status of quaternary sedimentary environment changes in the Chinese coastal zone

近海水域地区沉积环境变迁研究是海相沉积研究的重要组成部分,本文分析整理了近20年来我国对海岸带近海水域地区沉积环境的研究成果,主要包括渤海湾—黄河口、长江口—杭州湾、台湾海峡、珠江口及东海与南海地区。从全国不同地区来看,研究成果包括渤海湾的4种沉积类型和黄河三角洲形成的4个阶段;长江口—杭州湾的8个沉积环境分区;台湾海峡的3种沉积环境区;珠江口2个旋回变化;南海的3个不同生态环境的海区和其北部的4类沉积区。总体来说,我国海岸带近海水域地区沉积环境变迁研究未来应从整个海岸带沉积环境变迁进行分析研究,通过多种特征分析对比;同时研究需要加强现代沉积环境变迁动态观测,深入对沉积动力过程与环境关系的研究;另外,从宏观上看,研究需要进行注重不同学科交叉以及与其他地质数据记录的比较研究。

Studying changes in the sedimentary environment of coastal waters region is an important part of marine sedimentary research. Sedimentary environment research of coastal waters in China over nearly 20 years is analyzed. This research mainly addresses Bohai Bay-Yellow River Estuary, Yangtze River Estuary-Hangzhou Bay, the Taiwan Strait, the Pearl River Estuary, and the East China and South China Seas. Recent studies have identifed four sedimentary types of the Bohai Bay, four stages of the Yellow River Delta, eight sedimentary environments of the Yangtze River Estuary-Hangzhou Bay, three sedimentary environments in the Taiwan Strait, two cycles in the Pearl River Estuary, three different ecological environments in the South China Sea, and four types of sedimentary areas in the northern part of the South China Sea. Four suggestions are proposed： （1） concentrate on the entire coastal waters environment changes of China in the future, （2） strengthen the dynamic observation of modern sedimentary environment change, （3） conduct an in-depth study of the relationship between sedimentary dynamic processes and the environment, and （4） pay more attention to interdisciplinary comparative studies and other geological records.