中国医疗资源配置与服务利用协调发展的时空演化——基于机构分层分析框架     

林建鹏 《地理科学》2022,42(2):284-292

基于机构分层分析框架,运用统计与空间分析方法,剖析中国省域基层医疗卫生机构和医院医疗资源配置与服务利用协调发展的时空演化特征及其驱动因子。研究发现:2010—2018年2类机构的耦合协调类型由濒临失调衰退型变为勉强协调发展型;总体呈东部经济发达地区水平较高,中部地区居中,西北、东北、西南等经济欠发达沿边地区较低的空间分布格局和以长江中下游地区和青藏高原地区为核心的热、冷点区的空间聚集特征,同时在空间格局改善程度、局部空间集聚效应强度和冷热点区变化范围等方面存在差异;受人口分布与结构、经济发展水平和地理空间等因子驱动,同时存在明显时空异质性特征。  相似文献   

山东省海洋空间开发保护现状、问题及对策          下载免费PDF全文

陈斌  徐永臣  徐承芬  王琰  牟秀娟 《海洋开发与管理》2021,38(3):3-8

海洋是国民经济发展和社会进步的重要空间载体,海洋国土空间开发与保护对于实现可持续的经济增长、改善全球气候环境和提升人民生活福祉具有重大战略意义。山东省海域使用类型基本齐全,但开发利用结构规模不均衡,渔业用海比重较大,不合理的开发利用给海岸带和近海生态环境带来巨大威胁,严重制约了海洋经济的健康发展。文章根据山东省海域使用调查数据,综合分析了山东省海洋空间使用现状的特点以及存在的自然岸线保有压力增大、海洋空间开发利用科学性不足、近岸海域生态系统及服务功能受损较重、海洋污染造成的环境风险不容忽视、现代海洋产业体系不够完善、陆海统筹机制不健全等主要问题,在此基础上,从海洋空间资源、陆海统筹污染防治体系、现代海洋产业体系等角度提出了优化山东省海洋国土空间开发保护的相关对策建议。  相似文献   

Symmetry distribution of cities in China   总被引：1，自引：0，他引：1  

YE Danian  XU Wendong  HE Wei  LI Zhe 《中国科学D辑(英文版)》2001,44(8):716-725

The authors of this paper induced five principles of geographical symmetry based on the space distributions of cities and towns in China. There is a symmetry distribution of cities and towns. The symmetry characteristics are the following: (i) the average coordination number of the cities (including large cities, medium cities and county towns) is 6 (i.g. rotation symmetry); (ii) the distribution of large and medium cities are shown to be the latticework in which two directions are parallel to two main tectonic ones in China, respectively; (iii) the distribution of county towns of a province is also shown to be the latticework in which two directions are parallel to two tectonic ones in this province (i. g. two-dimensional translation) and (iv) the concentric circle distribution of cities (CCDC) is centered round a large city (i. g. rotation symmetry).  相似文献   

The transition of the electricity system towards decarbonization: the need for change in the market regime     

Dominique Finon 《Climate Policy》2013,13(2):130-145

The mainstream community of energy experts is not aware of the long-term impacts that carbon policies directly concerned with promoting the development of low-carbon technologies produce on the electricity market regime. Long-term market coordination should be replaced by public coordination with long-term arrangements. The current market coordination makes carbon pricing ineffective in orienting investors towards capital-intensive low-carbon technologies. Fossil fuel generation technologies are preferred because their investment risks are much lower in the market regime, even with a high but unstable carbon price. Thus, in order to avoid delaying investment that is aimed at the decarbonization of the electricity system, a number of new market arrangements that lower the investment risk of low-carbon technologies and provide output-based subsidization have or are being selected by governments. As the use of low-carbon equipment to produce electricity develops, long-term market coordination for other technologies (e.g. peaking units, combined cycle gas turbine) will fade away because they alter the market price setting. Thus it is likely that, in the future, public coordination and planning will replace the decisions of market players not only for low-carbon technologies but also for every other type of capacity development.

Policy relevance

The development of renewables as promoted by both feed-in tariffs and green certificate obligations, which answer to different market failures, is well known. Similar long-term arrangements, which both subsidize and de-risk low-carbon investments for every small-sized and large-sized technology, shift learning costs and risks onto consumers. Energy experts and regulators have ignored that the expansion and generalization of these arrangements are changing the coordination function of the electricity markets. Apart from those in the UK, they are still unaware of the impacts that such technology-focused policies produce on the electricity market regime. The transition from market coordination to public coordination, which is inconsistent with the market principles of European electricity legislation, and long-term contracting is inevitable and should be anticipated.  相似文献   

Coordination of urbanization and water ecological environment in Shayinghe River Basin,China   总被引：1，自引：1，他引：0  

Xiang Zhang  Hong Hu  Jiangang Xu  Haiwei Yin 《中国地理科学(英文版)》2011,21(4):476-495

During the rapid industrialization and urbanization of China,urban agglomeration in river basin areas raises the problems of over-use of water resources and pollution of the water environment.Related research in China has mainly focused on the conflicts among economic growth,urban expansion and water resource shortages within admin-istrative boundaries.However,water environments are much more dependent on their physical boundaries than their administrative boundaries.Consistent with the nature of water environment,this study aims at analyzing coordination relationships between urban development and water environment changes within physical river basin boundaries.We chose the Shayinghe River Basin,China,as our case study area which is facing serious challenges related to water en-vironment protection.Then we classified 35 county-level administrative units into upstream,midstream and down-stream regions based on their physical characteristics;analyzed the coordination degree of urban agglomeration using the Technique for Order Preference by Similarity to Ideal Solution (TOPSIS) method;and constructed cooperative models using the Linear Programming (LP function) to simulate four scenarios of the coordination relationship be-tween urban population increase and water environment protection based on existing water resources and water pollu-tion data.The results show that the present coordinative situation in Shayinghe River Basin is not sustainable.In gen-eral,more than 50% administrative units are in the bad coordinative situation.In particular,the downstream region is under worse condition than the upstream and midstream regions.Cooperative models in scenario analyses indicate that the population scale set in existing urban master plannings is not coordinated with the water environment protection.To reach the goal of regional sustainable development,the total population needs to be controlled such that it will re-main at 4.5×10 7 or below by 2020 given the capacity of water environment.  相似文献   

福州市城市化与生态环境协调性评价与分析   总被引：3，自引：0，他引：3  

任芳  林忠  李晓 《云南地理环境研究》2011,23(4):81-86

从协调性的视角,对城市这一复合系统,构建城市化与生态环境两个子系统。采用主成分分析法和模糊数学法,对福州市的城市化与生态环境的协调性发展进行了评价。结果表明:福州市自2000年以来城市化和生态环境的发展都有所提高;福州市城市化与生态环境复合系统的协调性呈波动发展,至2008年处于濒临失调的状态,且生态环境的发展速度滞后于城市化的发展;福州市土地资源的紧缺、经济结构重型化和工业"三废"排放量等原因将会长期影响福州市城市化与生态环境协调性的发展。  相似文献   

基于县域尺度的中国沿海地区效率分析     

沈惠新  严士清 《地理与地理信息科学》2011,27(1):59-63

采用数据包络分析(DEA)和空间自相关方法测评2006年中国沿海地区724个县域单位的效率,选取2000年和2006年两个时像探索近7年来中国沿海地区全要素生产率的时空格局及其影响因素。目前中国沿海地区县域效率相对较低,且呈北部沿海高、南部沿海低的空间格局;2000-2006年,影响中国沿海地区县域全要素变化的因素依次为纯技术效率、技术创新指数和规模效率的变化。将中国沿海地区的效率-经济空间格局分为高效率-强经济块、高效率-弱经济块、低效率-强经济块和低效率-弱经济块4种类型,为协调中国沿海地区未来经济发展格局政策的制定提供参考。  相似文献   

中尼口岸贸易与跨境交通耦合协调研究     

冶莉  葛岳静  胡伟  黄宇  李娜 《地理科学进展》2022,41(3):371-384

中尼口岸作为环喜马拉雅经济合作带的窗口,其贸易和交通发展是中国建设“面向南亚开放大通道”的重要支撑。论文探讨口岸贸易与跨境交通的耦合协调机理,运用评价指标体系法和可达性模型分别评估中尼口岸的贸易可持续发展水平和跨境交通可达性,运用耦合协调模型分析2010—2019年中尼口岸贸易可持续性与跨境交通可达性的耦合协调关系。研究结果表明：① 口岸贸易与跨境交通复合系统是一个具有交互耦合关系的有机整体,口岸贸易与跨境交通高水平同步发展是口岸贸易与跨境交通耦合协调的关键。② 中尼口岸贸易的整体可持续发展水平偏低,贸易流量是中尼口岸贸易可持续发展的关键要素;中尼口岸的跨境交通可达性提升缓慢,樟木口岸的跨境运输优势明显。③ 中尼口岸贸易与交通发展的耦合协调整体处于中度失调状态,贸易滞后于交通发展,交通对贸易的促进作用有限。为了推进口岸贸易与跨境交通的耦合协调发展,应当充分发挥中尼口岸的货运职能,大力发展尼泊尔转口贸易,打通南亚大市场。加快建设吉隆口岸跨境经济合作区;远期打造新通道以发挥樟木口岸大宗货物运输功能;利用直升机发展普兰(斜尔瓦)口岸的“神山圣湖”旅游经济,促进口岸贸易可持续发展。  相似文献   

人口-经济-住房租赁市场耦合协调研究——以中国35个大中城市为例     

牟玲玲  王欣然  王晨曦 《热带地理》2022,42(6):889-901

城镇化推进过程中,人口流入经济发达的大中城市,而高房价使住房租赁需求日益增加。人口、经济与住房租赁市场相互影响,三系统的协调发展是城市可持续发展的必然要求。在构建人口-经济-住房租赁市场系统评价指标体系的基础上,采用耦合协调及空间误差模型,探讨2018—2019年中国35个大中城市人口-经济-住房租赁市场三系统的耦合协调水平及其影响因素。研究发现：1）人口、经济和住房租赁市场作为3个社会系统,彼此相互影响。在城市可持续发展视角下,三系统之间的协调发展应是人口合理流动、经济运行良好与住房租赁市场平稳运行,三系统共赢共荣。2）35个大中城市人口与经济综合水平整体有所上升,但住房租赁市场综合水平稍有下降。3）35个大中城市人口-经济-住房租赁市场系统的耦合协调度有所上升,但各城市间耦合协调水平差异变大,其中划入住房租赁试点城市的耦合协调度相对较高。同时,东部城市耦合协调度普遍较高,其中上海市和北京市已达到良好协调水平,其他城市基本为初级协调水平;中部和东北部城市大多为勉强协调水平;西部城市大多处于濒临失调水平。4）经济结构、人口规模、房地产市场发展水平与教育资源是提高人口-经济-住房租赁市场系统协调水平的重要因素。  相似文献   

珠三角城市经济升级与社会升级的耦合协调关系及其影响因素     

蔡勃伟  邢祖哥  周进  黄耿志 《热带地理》2022,42(8):1228-1240

采用熵值法综合比较了2006―2019年珠三角经济升级和社会升级的现状,运用改进的耦合协调度模型定量衡量其经济升级和社会升级的耦合度、耦合协调度变化,并分析影响经济和社会升级耦合协调度的因素,结果表明：1）2006―2019年珠三角经济升级和社会升级过程总体上呈现波动上升的趋势,全球金融危机和珠三角的产业结构转型是影响2个系统升级过程的重要因素;2）2006―2019年珠三角2个系统的整体耦合度呈现“U”型演变的态势,由高水平耦合阶段降至磨合阶段再恢复至高水平耦合阶段;3）2006―2019年珠三角9市2个系统耦合协调度总体呈现上升趋势,经济升级系统和社会升级系统之间的协调性逐渐增强;4）人力资本、消费需求、外商投资和政府治理对珠三角经济升级和社会升级的耦合协调度有正向影响,而环境污染则起负面影响作用。  相似文献