建物別床利用データを用いた通りの区間別特性の考察:回遊目標としての熊本市中心市街地の界隈構成に関する研究

摘要

Revitalization of downtown shopping areas to attract people for strolling, shopping, or dinning there has become one of the important tasks of the downtown planning. As the first step of studies, the authors, assuming the distribution of multiple "neighborhood", clusters of distinctive and fashionable shops developed along both main shopping arcades and human-scale streets behind them, will promote visitors' strolling activities in the downtown, analyzed a present formation of the neighborhood in the downtown Kumamoto. For the study, the authors, setting 2484 observation points along the all streets in the study area at 10m pitch, counted the number of floor-use units by type of use for all floors of all buildings that locate within 30m buffer circle of each observation point, and then classified each point applying the primary component analysis and the cluster analysis to those floor-use data, as well as several additional data that represent building size and location feature. Assuming a case that five or more contiguous observation points are classified as the same character represents formation of a distinctive neighborhood, the authors identified 80 neighborhoods, and, then, pointed out both advantages and disadvantages of present neighborhood structure in promoting visitors strolling activities. The case study for Kumamoto showed the applicability of proposed procedure for the similar planning task.%1．はじめに1－1．研究の背景と目的多くの地方都市が中心市街地の空洞化問題に直面しており、改正法にもとづいて中心市街地活性化基本計画の認定を受けた都市は、2009年夏には81都市を数えた注1）。熊本市の中心商店街も、歩行者通行量がこの10年間に4分の3に減少したなど、中心市街地の空洞化問題は徐々に深刻化しつつある。このような背景から、熊本市は2007年に中心市街地活性化基本計画を策定し注1）、城下町の個性を活かして中心市街地の魅力を高めると共に、市民の回遊を促すまちづくりを進めている。