摘要
长江三角洲人地相互作用经历了三个大的发展阶段,在此过程中人对环境的影响不断增强.早期人类的生活和生产方式主要依附于三角洲的自然环境,人们的生产活动场所也受制于三角洲发育的影响.之后人们逐渐采取适应自然变化的措施,力争能与自然协调发展.随着人口增长,经济发展、技术进步,过度的人类活动已使长江三角洲生态环境不断恶化.主要的问题包括地面沉降、洪涝灾害、污染、盐水入侵和海岸侵蚀等,三角洲已经成为全球变化的主要脆弱区之一.由于影响长江三角洲环境的因素众多,关系复杂,以及人类的主动适应能力,目前难以确定三角洲系统的气候变化阈值,即超过它系统将发生不可逆转的衰退.
Human-earth interactions in the Changjiang Delta have undergone three major phases with increasing influence of human activities. At the beginning, the styles and fields for human living and production activities were greatly controlled by deltaic natural conditions. It was followed by a harmonious-development phase in which human gradually advanced their adaptive capability to the impacts of environmental changes by taking proactive measures. At present, excessive human activities have exerted inverse impacts on the environment such as rapid increase in population, economical growth and technological renovation. The delta becomes a key province vulnerable to global change, facing with worsening ground subsidence, flooding, pollution, salt-water intrusion and coastal erosion. The threshold our present knowledge, considering human proactive adaptability, and multi-factors with their complex relationship with the deltaic environments.
出处
《同济大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2005年第9期1195-1200,共6页
Journal of Tongji University:Natural Science
基金
国家科技攻关项目(2001-BA611B-02-05)
国家自然科学基金资助项目(40476028)
同济大学理科基金资助项目
关键词
长江三角洲
人地相互关系
全球变化
脆弱性
人类活动
Changjiang Delta
human-earth relationship
global change
vulnerability
human activities
作者简介
赵娟（1971-），女，山东泰安人，副教授，博士生．E-mail：zhaojuan@mail．tongji．edu．cn
