测绘与空间地理信息
測繪與空間地理信息
측회여공간지리신식
GEOMATICS & SPATIAL INFORMATION TECHNOLOGY
2014年
1期
9-12
,共4页
王少华%钟耳顺%张小虎%郑怀海%张珣
王少華%鐘耳順%張小虎%鄭懷海%張珣
왕소화%종이순%장소호%정부해%장순
交通网络%时间序列%网络拓扑结构%相对可达性%可达性中心
交通網絡%時間序列%網絡拓撲結構%相對可達性%可達性中心
교통망락%시간서렬%망락탁복결구%상대가체성%가체성중심
road network%time series%network topology structure%accessibility
基于过去800年(1160~2000年)北京城市交通网络时间序列数据,研究了北京交通网络的发展变化。主要从交通网络的拓扑结构、可达性等角度分别对网络直径、平均最短路径长度、平均聚集指数、相对可达性等指标进行了定性定量分析。研究结果表明:第一,北京交通网络扩张呈“两段式”特点:前数百年只加密路网,近53年网络直径扩张了2.62倍;第二,从网络拓扑结构的角度分析,北京过去800年交通网络度分布结构呈现良好的一致性,交通网络中顶点与路段的比例保持不变,网络内部联系日趋紧密;第三,北京交通网络可达性格局趋于有序:从金元时期的不规则格局发展为明清时期的椭圆形格局,建国后呈圆盘形格局扩张,但可达性中心由天安门向西北方向偏移至阜成门处。通过搜集研究北京过去800年的交通网络数据,本文记录了北京交通网络演化的全过程,并揭示了其演化过程中蕴含的宏观规律。
基于過去800年(1160~2000年)北京城市交通網絡時間序列數據,研究瞭北京交通網絡的髮展變化。主要從交通網絡的拓撲結構、可達性等角度分彆對網絡直徑、平均最短路徑長度、平均聚集指數、相對可達性等指標進行瞭定性定量分析。研究結果錶明:第一,北京交通網絡擴張呈“兩段式”特點:前數百年隻加密路網,近53年網絡直徑擴張瞭2.62倍;第二,從網絡拓撲結構的角度分析,北京過去800年交通網絡度分佈結構呈現良好的一緻性,交通網絡中頂點與路段的比例保持不變,網絡內部聯繫日趨緊密;第三,北京交通網絡可達性格跼趨于有序:從金元時期的不規則格跼髮展為明清時期的橢圓形格跼,建國後呈圓盤形格跼擴張,但可達性中心由天安門嚮西北方嚮偏移至阜成門處。通過搜集研究北京過去800年的交通網絡數據,本文記錄瞭北京交通網絡縯化的全過程,併揭示瞭其縯化過程中蘊含的宏觀規律。
기우과거800년(1160~2000년)북경성시교통망락시간서렬수거,연구료북경교통망락적발전변화。주요종교통망락적탁복결구、가체성등각도분별대망락직경、평균최단로경장도、평균취집지수、상대가체성등지표진행료정성정량분석。연구결과표명:제일,북경교통망락확장정“량단식”특점:전수백년지가밀로망,근53년망락직경확장료2.62배;제이,종망락탁복결구적각도분석,북경과거800년교통망락도분포결구정현량호적일치성,교통망락중정점여로단적비례보지불변,망락내부련계일추긴밀;제삼,북경교통망락가체성격국추우유서:종금원시기적불규칙격국발전위명청시기적타원형격국,건국후정원반형격국확장,단가체성중심유천안문향서북방향편이지부성문처。통과수집연구북경과거800년적교통망락수거,본문기록료북경교통망락연화적전과정,병게시료기연화과정중온함적굉관규률。
Based on road network time series datasets of Beijing (1160-2000 AD), this paper studies the development pattern of road network .From the perspectives of network size , topology structure and accessibility pattern , the study chooses several measure-ments, including network diameter , average length of shortest paths , average degree, average clustering coefficient , relative accessi-bility index, and has carried out both quantitative and qualitative analysis .The results of the study mainly lead to three conclusions . First, from the perspectives of network size , the road network development process of Beijing in past 800 years can be devised into two stages:the road network diameter keep stable in several hundred years , and suddenly expend 2.62 times in just 53 years.Second, from the perspectives of topology structure , the average degrees and degree distribution of the road networks show a high degree of con -sistency in past 800 years.The ratio between nodes and arcs of road networks remains constant .The connections between arcs in the road network are getting closer .At last, the accessibility pattern of Beijing ’s road network is becoming more and more orderly .In Jin and Yuan dynasty , the accessibility pattern was irregular .Then in Ming and Qing dynasty , it changed into oval shape .After 1947 , it’s a round pattern.However, the accessibility center has moved to the northeast from Tiananmen Square to the Fuchengmen Gate . According to collect and study the road network time series dataset (1160-2000 AD) of Beijing, this paper has recorded the evolu-tion process of Beijing road network in detail , and has revealed its macro -laws among the evolution process .