地理学报 ›› 2014, Vol. 69 ›› Issue (1): 100-109.doi: 10.11821/dlxb201401010

• 地理环境 • 上一篇    下一篇

虚拟地理环境中尺度适宜性问题的探讨

张春晓1, 林珲1,2,3, 陈旻1,3   

  1. 1. 香港中文大学太空与地球信息科学研究所, 香港;
    2. 香港中文大学地理与资源管理学系, 香港;
    3. 香港中文大学深圳研究院, 深圳518057
  • 收稿日期:2013-03-25 修回日期:2013-10-21 出版日期:2014-01-20 发布日期:2014-01-20
  • 作者简介:张春晓(1984-),女,河北邯郸人,博士研究生,研究方向为虚拟地理环境与多尺度地理过程模拟。E-mail:chunxiaozhang@cuhk.edu.hk
  • 基金资助:
    国家自然科学基金(41171146;41101370;41101439);国土资源部公益性行业科研专项经费项目(201011020-5);香港创新及科技基金(ITF) 项目(ITS/042/12FP);香港中文大学直拨经费(4052007)

Discussion about scale adaptability in virtual geographic environments

ZHANG Chunxiao1, LIN Hui1,2,3, CHEN Min1,3   

  1. 1. Institute of Space and Earth Information Science, The Chinese University of Hong Kong, Shatin, N. T., Hong Kong, China;
    2. Department of Geography and Resource Management, The Chinese University of Hong Kong, Shatin, N. T., Hong Kong, China;
    3. The Chinese University of Hong Kong Shenzhen Research Institute, Shenzhen 518057, Guangdong, China
  • Received:2013-03-25 Revised:2013-10-21 Online:2014-01-20 Published:2014-01-20
  • Contact: 林珲(1954-),男,广东汕头人,教授,欧亚科学院院士,中国地理学会会员(S110006388M),从事虚拟地理环境、空间综合人文学等研究。E-mail:huilin@cuhk.edu.hk
  • Supported by:
    National Natural Science Foundation of China, No.41171146; No.41101370; No.41101439; Non-profit Industry Financial Program of Ministry of Land and Resources of China, No.201011020-5; Innovation and Technology Fund from the Government of the Hong Kong Special Administrative Region, No.ITS/042/12FP; Direct Grant from the Chinese University of Hong Kong, No.4052007

摘要: 本文沿着地理学语言的演化过程,讨论了地理学中尺度概念的演变;针对虚拟地理环境的框架结构,依据尺度概念的维度、类别和组成因素分析了四组尺度适宜性问题,并讨论了在虚拟地理环境搭建和应用过程中各种尺度适宜性之间的关系。以香港区域气象过程模拟为例,应用多尺度地形数据和模型,简要分析了在空间维上,测量尺度类别中组成因素(分辨率) 层次的尺度适宜性。该案例不只表明尺度适宜性对动态地理过程问题求解的重要影响,同时表明对尺度适宜性的讨论有助于其认知与分解,丰富虚拟地理环境的理论与方法。

关键词: 虚拟地理环境, 尺度适宜性, 地理过程, 地理学语言

Abstract: Along with the focuses of geography changing from static geographic pattern to dynamic geographic process, geographic language is also evolving from maps to GISystem (Geographic Information System) to VGEs (Virtual Geographic Environments). Due to the multiscale characteristic and scale dependence of both geographic processes and study methods, scale adaptability turns out to be an inventible component for the theory and method of VGEs, which aims to solve dynamic geographic problems. This paper discussed the definition of geographic scale by using three parameters, namely dimension, kind and component, and then illustrated the evolution of scale concept along with the evolution of geographic language. In such evolution, from maps to VGEs, the scale concept is becoming much more comprehensive, which makes the study into scale adaptability issues more important and difficult. In regard to the framework of VGEs, four groups of scale adaptability issues are identified and analyzed according to the parameters of scale definition (dimension, kind and component). These four groups reflect different operational levels, which are illustrated in detail to support the implementation of scale adaptability. Meanwhile, the interrelationship among multiple scale adaptability is also illustrated when the VGEs are constructed and applied. Taking a meteorological simulation in Hong Kong as a case study, scale adaptability considering multiscale DEM data and a meteorological model (WRF: Weather Research & Forecasting Model) was investigated, which is on the component level within the spatial dimension and observational kind of scale (namely spatial resolution). This case study not only explained the significance and implementation of scale adaptability in geographic process research, but also showed the contribution to the cognition and decomposition of complex scale adaptability issues from the discussion in this paper. In summary, the attention and research into scale adaptability will enrich the theory and methodology of VGEs and improve practical applications of VGEs.

Key words: scale adaptability, geographic language, virtual geographic environments, geographic process