快速城市化地区遗产廊道适宜性分析方法探讨——以台州市为例

遗产廊道是绿道基础上形成的概念,融休闲游憩、文化与生态保护于一体。本文运用最小累积阻力模型,结合GIS技术尝试探讨遗产廊道适宜性分析的新途径。主要的思路是:把遗产和生态休闲活动作为一种空间水平过程,基于土地利用属性和遗产廊道元素的不同阻力分布,模拟其空间扩张状况,在此基础上进一步分析确定适宜建立廊道的区域。依据公众偏好调查,和在此基础上的专业人员评价,来确定土地利用属性和遗产廊道元素的阻力系数。在有关探讨的基础上,针对一个快速城市化进程中的典型地区———浙江台州市案例,进行了较详细的呈示和讨论。

Suitability analysis of heritage corridor in rapidly urbanizing region:a case study of Taizhou City

As a concept based on greenway development, heritage corridor, which combined recreation and tourism development with ecological restoration and cultural conservation, has come into being in the United States since the 1980s. With rapid development in the study of greenway network, plans of heritage greenway network were proposed for heritage conservation as part of ecological infrastructure in regional scale in recent years worldwide. As many cases have shown, suitability analysis is the key in greenway planning study. Some approaches of greenway suitability analysis given in the former cases were too complicated and too much data dependent to be applicable in the Chinese condition. With GIS (geographic information system) technology and MCR (minimum cumulative resistance) model being used, a new approach of heritage corridor suitability analysis is designed to analyse and identify the suitability of potential areas for heritage corridors. This approach is featured in the following aspects: 1) A heritage corridor is defined as a linear landscape element that combines the function of recreational activities, heritage protection and ecological processes. 2) In addition to the physical faccors of heritages, the process of recreational use is the major concern in the definition of the suitability of a heritage corridor. 3) Recreational activities associated with heritages are considered as a horizontal process going across the landscape. This process is taken as an active process which overcomes the cumulative landscape resistance affected by land uses and covers. The less accumulative resistance a user is going to experience across the landscape, the more suitable the landscape is designated as heritage corridors. 4) The suitability of a landscape for a heritage corridor is therefore represented through the relative accumulative resistance in the process that a user experiences across the landscape towards or between heritage sites. 5) The calculation of accumulative landscape resistance is based on the cost-distance from the sources (heritage sites) to any points in the landscape.Different land uses and covers contribute differently to the resistance, and their weights are based on the evaluation by experts and inquiry of the local people. A case study in a rapidly urbanizing region, Taizhou City of Zhejiang Province, is presented.