中文摘要：

首先分析20世纪晚期西方社会经济文化转变，带来折射人类社会文化特征的建成环境风格的转变，从而导致作为建成环境一部分的历史环境保护受到全面重视，保护内容和手段不断拓展。继而揭示了珠三角地区历史环境种类丰富、分区明显、涵盖面广的特点，及保护与经济发展不同步、保护体系单一的问题。并分析21世纪珠三角主要城市也出现后工业化趋势，而文化大省战略将进一步带来对多元文化和地方特色的重现，促使区域重新审视和重视历史环境保护问题。最后借鉴西方的经验，提出通过保护的跨学科、多部门融合，保护内容的多样性和保护主体的多元化，实现多元文化背景下珠三角历史环境保护。

英文摘要：

In the late 20^th century, there were a series of socio-economic and cultural transitions in the West. The transition of production mode and the update of industrial structure caused cultural change, which resulted in conversion of style of built-up environment. People began to criticize modernism and paid more attention to post-modernism and localism, which brought good chances to historic conservation. The historic environment of the Pearl River Delta （PRD） is characterized by abundant historic resources and obvious local cultural style in built-up areas. However, at present, the historic conservation action lags and the conservation system is unitary. The paper considers that： some economic and social indexes of the main cities in PRD are embodying their obvious trend of Post-industrialization. These cities will undergo some cultural transition and the conversion of style of buih-up environment, which will also make the whole society think much of historic conservation of PRD. In order to achieve the objective, different departments of local governments should reinforce collaboration; more and more people and social groups should be encouraged to participate in the historic conservation.