地域研究与开发
地域研究與開髮
지역연구여개발
Areal Research and Development
2012年
5期
148~153
,共null页
长度-半径维数 分枝维数 分形 河南省
長度-半徑維數 分枝維數 分形 河南省
장도-반경유수 분지유수 분형 하남성
length-radius dimension ; ramification dimension ; fractal ; Henan Province
以分形理论为基础,借助GIS技术,分别测算了河南省全域公路交通网络的长度-半径维数、分枝维数以及其所辖18个省辖市各等级公路的相似维数及权维值。研究表明:河南省公路交通网络具有分形特征,长度-半径维数与分枝维数存在一定差异;各地市权维值存在较大差异,表明河南省公路交通网络分布不均衡,差异较大,中原城市群和黄淮的部分地区公路交通较好,而豫北、豫西、豫西南及豫东南部分地区交通覆盖度较差。为进一步探讨各地市公路建设规模和经济发展之间的协调关系,通过公路规模与经济产出的分形模型测算出18个省辖市的分维值,发现郑州等10个城市经济发展超前于公路规模、开封等3个城市基本一致、平顶山等5个城市经济发展滞后于公路建设规模。
以分形理論為基礎,藉助GIS技術,分彆測算瞭河南省全域公路交通網絡的長度-半徑維數、分枝維數以及其所轄18箇省轄市各等級公路的相似維數及權維值。研究錶明:河南省公路交通網絡具有分形特徵,長度-半徑維數與分枝維數存在一定差異;各地市權維值存在較大差異,錶明河南省公路交通網絡分佈不均衡,差異較大,中原城市群和黃淮的部分地區公路交通較好,而豫北、豫西、豫西南及豫東南部分地區交通覆蓋度較差。為進一步探討各地市公路建設規模和經濟髮展之間的協調關繫,通過公路規模與經濟產齣的分形模型測算齣18箇省轄市的分維值,髮現鄭州等10箇城市經濟髮展超前于公路規模、開封等3箇城市基本一緻、平頂山等5箇城市經濟髮展滯後于公路建設規模。
이분형이론위기출,차조GIS기술,분별측산료하남성전역공로교통망락적장도-반경유수、분지유수이급기소할18개성할시각등급공로적상사유수급권유치。연구표명:하남성공로교통망락구유분형특정,장도-반경유수여분지유수존재일정차이;각지시권유치존재교대차이,표명하남성공로교통망락분포불균형,차이교대,중원성시군화황회적부분지구공로교통교호,이예북、예서、예서남급예동남부분지구교통복개도교차。위진일보탐토각지시공로건설규모화경제발전지간적협조관계,통과공로규모여경제산출적분형모형측산출18개성할시적분유치,발현정주등10개성시경제발전초전우공로규모、개봉등3개성시기본일치、평정산등5개성시경제발전체후우공로건설규모。
There are several different calculation methods of fractal dimension value. Length-radius dimen- sion, dendrite-radius dimension and similarity dimension of highway transportation network of Henan Province are calculated with the help of the software ArcGIS in this paper. Zhengzhou, the transportation hinge of Henan Prov- ince is chosen as the calculation center for fractal characteristics analysis, and the radius value changes between 20 and 360 km. The results show that the higher transportation network of Henan Province has fractal characteristics. It shows that the connectivity of the highway transportation of Henan Province should be strengthened. The similari- ty dimension of different districts of the main cities has also been calculated at the scale of 2 to 20 km in this re- search and the results show that the highway transportation network distributes uneven. The highway transportation of the Central Plains City Cluersters and the Yellow and Huai River areas is better, but the highway traffic coverage in the north western and the southeast of Henan Province is poorer. To further seek coordination relations between highway construction and the economic development in various cities, the authors caclulate the fractal of 18 cities by introducing the fractal model of road construction scale-economic output. And discover that economic develop- ment exceeds the road scale in 10 cities, basically consistent in 3 cities, and economic development lags behind highway construction scale in 5 cities.