摘要
通过建立县域城镇化与景观格局评价体系,分析了2005—2014年京津冀地区165个县(市、区)城镇化和景观格局的综合水平,应用协调发展度模型,对二者的协调度进行了定量评估,并将其发展模式与"长三角"城市群进行对比分析,最后对二者协调发展地区差异的驱动力进行了探讨。结果表明,(1)城镇化综合水平呈现较大的空间差异:高值区集中在京津城区和各地级市辖区,由此形成以北京城区为中心的团状分布格局和以河北各市辖区零星散布的点状分布格局;低值区数量占整个研究区80%的比重,这种城镇化模式与"长三角"城市群的多核心模式不同。(2)景观格局变化剧烈:从类型水平指数看,大多数景观类型的斑块密度增加、破碎化、不规则化;从景观水平指数看,高值区呈先增后减的态势,集中在冀东、冀西沿线和滨海新区,由此形成沿冀西陆地和沿冀东海岸的近似条状分布格局,中值区的分布则比较零散,低值区分布在冀东南、冀东北、北京东部、天津中部地区。(3)城镇化与景观变化发展失衡:3个时期城镇化与景观格局的协调区都集中在京津城区、渤海湾海岸沿线,失调区集中在北京城区外围及河北各市辖区外的所有区域,且经济因素是区域失衡的主要驱动力。
There is an increasing concern about the correlations between urbanization and landscape dynamics in rapid developing regions. This study presented the evaluation index system of urbanization and landscape patterns in the region of Beijing-Tianjin-Hebei. We analyzed the comprehensive level of urbanization and landscape patterns of 165 counties （cities and districts） from 2005 to 2014 in this region. The coordination degree of urbanization and landscape pattern was quantified by using the coupling coordination degree model （CCDM）. The CCDM was compared with the urban agglomeration in the Yangtze River Delta. Results showed that： （1） The comprehensive level of urbanization had spatial heterogeneity. The higher value of urbanization was concentrated in the areas of Beijing and Tianjin as well as other large cities. In contrast, the low values were mainly located sparsely in this region and accounts for more than 80% of the total area. The urbanization mode in this region was totally different from other regions, such as the balanced development in the Yangtze River Delta; （2） The landscape pattern changed significantly. In the class level, the patches had more density, large fragmentation, and irregular shape in most landscape types. In the landscape level, the comprehensive level of landscape patterns showed a trend of increasing at first and then decreasing. These high values were located mainly along the eastern and western of Hebei Province as well as the and Binhai New Area of Tianjin. They formed a strip-shaped distribution pattern along the western land of Hebei and eastern coast of Hebei. The distribution of median values was scattered while the low values were mainly distributed in the southeast and northeast of Hebei Province; （3） The urbanization and the landscape changes were not balanced spatially. The balance areas of urbanization and landscape patterns were concentrated in Beijing-Tianjin area and along the Bohai Bay coast. The imbalance areas were concentrated in the fringe areas of Beijing and in all the prefecture level cities of Hebei province, except for the municipal districts. We also found that the economy level is the main driving force for the spatial imbalance of urbanization and landscape dynamics. The results can provide implications for urbanization and landscape planning of Beijing-Tianjin-Hebei Region as well as other similar regions under the rapid urbanization.
出处
《生态环境学报》
CSCD
北大核心
2018年第1期62-70,共9页
Ecology and Environmental Sciences
基金
国家重点研发计划项目(2016YFC0503001)
关键词
城镇化
景观格局
协调度
京津冀
县域
urbanization
landscape patterns
coordination degree
Beijing-Tianjin-Hebei
county level
作者简介
严珅（1992年生）,女,硕士,主要从事城市与区域生态等方面的研究.E-mail：yasmine92ys@163.com;通信作者,E-mail：rhsun@rcees.ac.cn
