The Evolution Pattern and Simulation of Land Use in the Beijing Municipal Administrative Center(Tongzhou District)

Beijing Municipal Administrative Center(Beijing MC)in Tongzhou District has inherited the non-capital core functions of Beijing’s central urban area,and its rapid construction and development urgently require a scientific understanding of the pattern of land use evolution in the region.This paper analyzes the pattern of land use evolution in Tongzhou District over the past 40 years,from 1980 to 2020.According to the historical evolutionary characteristics of land use and urban development planning goals,combined with the driving factors of cultural tourism development,the Future Land-use Simulation(FLUS)model is used to simulate the spatial distribution of land use in Beijing MC(Tongzhou District)in 2035 under three scenarios of urbanization acceleration,deceleration and sustainable development.The results show three major trends.(1)Beijing MC(Tongzhou District)is dominated by urban development and construction.During the high-speed urbanization stage from 1980 to 2010,the urban expansion pattern of“along the Sixth Ring Road and along the Grand Canal”was formed.During the low-speed urbanization stage from 2010 to 2020,the land distribution was stable,and Tongzhou District formed a pattern of urban-rural differentiation and land intensification from northwest to southeast.As a typical area of Tongzhou District’s urbanization,Beijing MC has the same characteristics of the temporal and spatial evolution as Tongzhou as a whole.(2)By 2035,there are significant differences in land use among the three scenarios with respect to the magnitude of change and spatial distribution.The area and distribution of ecological land under the urban sustainable development scenario are optimal,which is conducive to the realization of sustainable urban development.In analyzing the degree of conformity with the three Beijing MC zoning plans,the prediction simulation under the sustainable development scenario is highly consistent with the land use of the“Beijing Municipal Administrative Center Regulatory Detailed Planning(Block Level)(2016–2035)”(hereinafter referred to as“Planning”)issued by the municipal government.However,there are certain deviations between the simulation predictions in the cultural tourism function area and the livable living scenery area and the corresponding“Planning”expectations.During the urban construction process,the internal ecological land area still needs to be increased.(3)Tongzhou District may lack a close connection between the urban and rural areas in the southeast.Potential risks such as the imbalance in the development of northern and southern townships require further attention in the development process.The prediction and simulation results of the model can provide certain data and methodological support for the construction of a harmonious and livable city in Beijing MC(Tongzhou District).

基于生态水文调节服务的石家庄雨涝灾害供需匹配分析与街区规划干预

在雨涝灾害威胁日益凸显的背景下,基于生态系统水文调节服务供需匹配分析的规划防涝优先干预区识别,为高效降低城市雨涝风险、利用规划措施防涝提供了新的研究思路与科学支撑。运用数据叠置、水文模拟及公式计算法,将城市原生雨涝供给能力与雨涝需求水平统一至同一评估体系中。结合降雨量、下垫面类型,运用径流曲线模型对街区地表径流调节率进行计算,生成供给能力评估结果;以GIS水文模拟结果计算得出的危险性、暴露性和脆弱性指数生成需求水平评估结果。根据石家庄中心四区3a一遇、50a一遇情景供需匹配结果,划定城市街区尺度的规划干预等级,并分类提出相应规划策略。研究结果表明:石家庄市中心四区低供给高需求街区在3a一遇降雨情景下以点状聚集分布;50a一遇降雨情景下,在京广铁路线沿线呈现纵向聚集形态。同时,在两种降雨情景下,规划干预高等级街区均集中出现于桥西区苑东街道、彭后街道、东华街道,长安区长丰街道、建北街道,裕华区裕翔街道、建华南街道。根据规划干预等级、供需相对关系及供需失衡原因,分别提出3a一遇、50a一遇降雨情景下的九类规划干预策略,为城市雨涝灾害的规划应对提供优化思路。

深圳中心商务区的区位转移及其机制

2 0世纪 80年代形成的罗湖商业区可以看作是深圳目前的中心商务区 ,正在建设中的深圳中心区 (福田中心区 )将会是未来深圳的中心商务区。在深圳城市经济重心西移等内外因素的作用下 ,深圳商务中心区西移趋势已经形成。本文主要就福田中心区的成长和深圳中心商务区由罗湖向福田转移的机制作了探讨。

国家中心城市建设背景下郑州市行政区划优化研究

行政区划是国家中心城市建设的重要空间基础,直接影响城市发展模式转变、产业结构转型升级、城镇空间布局优化等方面。研究表明:(1)郑州行政区划设置受交通物流环境的变迁而不断改变,行政区划设置应及时回应经济社会发展的变化趋势;(2)当前郑州行政区划面临着突出的市辖区规模过小问题,由此导致企业生产成本、城市更新成本和行政管理成本的快速上升,已经明显影响到国家中心城市的建设需求;(3)郑州市行政区划调整是推动区域协调发展的重要举措,有利于"平衡南北方、协调东中西",对于拓展国家中心城市发展空间,提升工业化和城市化发展水平,推动大都市资源要素整合具有重要的现实意义。

石家庄正定新区地铁1号线二期市政预留工程设计

为避免城市新区后期轨道交通工程建设对管线迁改和道路破复的影响,需将部分轨道交通车站和区间土建部分与城市道路、市政管线、综合管廊等工程同期实施。以石家庄正定新区地铁1号线二期市政预留工程4站、3区间为例,对该线路预留工程设计中存在的问题,包括预留的原则与标准,以及主体及附属工程等的封堵措施、盾构端头加固的做法、换乘节点的预留、附属与市政工程接驳及周边规划商业的预留、设备的预留预埋等进行了研究。

石家庄市桥西区拉丁舞培训机构开展现状调查——以石家庄初艺舞蹈培训中心为例

本文采用文献资料法、问卷调查法、实地考察法等研究方法对石家庄市桥西区的拉丁舞开展现状进行分析,具体以石家庄初艺舞蹈培训机构为例,进而分析其学员、师资、运营、授课内容等情况。本文的研究有助于促进该地区相关艺术类培训机构的发展,可以为相关培训机构的经营管理者提供指导意见,也可以为拉丁舞老师提供课堂经验。