摘要
以重庆市各个区县的公路交通为研究对象,运用GIS空间分析技术,基于重庆市公路网数据,采用公路网密度,公路交通干线影响度和区位优势度3个指标,研究分析了重庆市公路交通优势度的空间分布特征和成因。结果表明:重庆市整体的公路网密度为0.306km/km2,南岸区公路网密度最大,为0.812km/km2,酉阳最小,为0.176km/km2;干线影响度大于8.0的基本处于重庆市西部,小于1.0的区县有城口、巫溪及丰都;区位优势度从0.5到3.0不等,且西部区县大于东部区县;重庆市公路交通优势度区域差异比较明显,西部区县的交通优势度普遍高于东部地区,并且交通优势度为突出、显著、中等的区域绝大部分处在重庆市西部地区,交通优势度的差异与经济发展密切相关,处于各种等级的区县大部分都呈现出了空间集聚性,并没有太多的分散分布,主城区交通优势度非常突出,是重庆市的增长极,起着带动经济发展以及辐射周边区县的作用;重庆市县域的交通优势度的基本格局是由国家及地方政策、自身经济发展以及地形地貌等因素造成的。
This articleuses highway network density ,artery influencing degree and location superiority degree to research the features and causes of spatial pattern of transportation superiority degree of Chongqingw hich is composed of more than 30 counties .The results of the research show that the average highway network density（HND） of thewhole Chongqingarea is 0 .306 km/km2 ,the highest HNDappears inNan’an District which is 0 .812 km/km2 ,and the lowestone isYouyangContywhich is 0 .176 km/km2;the arterial highway-swhich influencing degrees are above 8 .0 aremostlydistributedin the west of Chongqing ,and the artery influ-encing degrees of Fengdu County ,Wuxi CountyandChengkou County are below 1 .0 ;location superiority de-gree（LSD） ranges from 0 .5 to 3 .0 ,and westerncounties’LSD is higher than that ofeasterncounties .The difference of transportation superiority degree （TSD）is closely related to theeconomic development ,and most counties and districtsin various levelsappearthe feature ofspatial agglomeration instead ofscattered distribu-tion;the TSD in main urban area is very obviouswhich is also the growth pole of Chongqing and plays a role in promoting economic development and influencing surrounding areas .In conclusion ,the basic pattern of the TSD in every district and county of Chongqing is mainly caused bynational and local policies ,its owneconom-ic developmentand factors of topography .
出处
《绿色科技》
2014年第7期310-314,共5页
Journal of Green Science and Technology
关键词
公路交通
交通优势度
空间格局
重庆市
highwaytransportation
transportation superiority degree
spatial pattern
Chongqing
