Urban historic heritage buffer zone delineation: the case of Shedian

Abstract

Abstract Buffer zones help protect historical heritage sites’ integrity, authenticity, and sustainability, and thus are an essential measure for protecting such sites. Traditional buffer zone delineation considers mainly the urban texture, a rigid boundary, visual corridor construction, and other factors. A more direct approach is designating a rated outer periphery that includes historic properties as a buffer zone. However, boundaries determined by single-value orientation tend to omit protected objects. A buffer zone formed by boundary translation and enclosure will include many low-value areas in the protection scope, thereby wasting resources and affecting historic towns’ natural development, resulting in a severe contradiction between humanity and the earth. This paper proposes a new method for delimiting buffer zones. The method arises from the field that covers the value assessment of cultural heritage and from the principles of comprehensive protection, which combine cultural heritage’s tangible and intangible properties. We used 29 historical preservation plans as samples to obtain statistics on their protection content, selected natural and agriculture landscapes, architectural features, construction quality, number of stories in a building, building age, protection class, street pattern, historical elements, urban texture, cultural industry, and cultural elements according to the frequency of occurrence as the primary factors affecting a buffer zone’s boundary demarcation. These factors were weighed and evaluated by the multi-criteria decision-making method (MCDM) to create a comprehensive evaluation map for helping determine a buffer zone’s boundary. Using such method, we identified the value of historical heritage through employing the quantitative analysis method of MCDM. We also used the evaluation result to determine the buffer zone boundary objectively. This approach rectifies the problems found in previous studies, namely an incomplete accounting of all relevant factors and a lack of data; it also provides a definition of an historical heritage buffer zone.

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