Design and compilation of urban geomorpholo-gical maps——A case study in Chongqing city

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Land potential appraisal for urban land reserve based on GIS: A case of metropolitan area in Chongqing

With the rapid urbanization, land banking has become an important means for rational land use and land configuration optimizing. Rational urban land reserve and supply plan are keys for an urban land banking. GIS has been used to model urban growth, growth at the rural-urban fringe specifically. This paper identifies that the urban land banking potential can be evaluated based on RS and GIS technology. 10 indicators were chosen in the integrated index system. As a case of Metropolitan area in Chongqing, urban land banking potential was evaluated based on RS and GIS technology. With GIS, two steps can help to finish potential analysis of land banking. One is goal driven process, such as the process of planning and definition; the other step is data-driven process, such as the process of Manipulating. The results are used to establish the current land banking plan.     

Numerical evaluation on the interspecific relation－ship in the D．furfuracea group of neotropical An－nonace

Ｎｕｍｅｒｉｃａｌｅｖａｌｕａｔｉｏｎｏｎｔｈｅｉｎｔｅｒｓｐｅｃｉｆｉｃｒｅｌａｔｉｏｎ－ｓｈｉｐｉｎｔｈｅＤ．ｆｕｒｆｕｒａｃｅａｇｒｏｕｐｏｆｎｅｏｔｒｏｐｉｃａｌＡｎ－ｎｏｎａｃｅａｅＨｅｐｉｎｇ（ＤｅｐｔａｒｔｍｅｎｔｏｆＬｉｆｅＳｃｉｅｎ...     

The sustainable development of the mountainous region in Chongqing Three Gorges Reservoir region

ＴｈｅｓｕｓｔａｉｎａｂｌｅｄｅｖｅｌｏｐｍｅｎｔｏｆｔｈｅｍｏｕｎｔａｉｎｏｕｓｒｅｇｉｏｎｉｎＣｈｏｎｇｑｉｎｇＴｈｒｅＧｏｒｇｅｓＲｅｓｅｒｖｏｉｒｒｅｇｉｏｎＺｈａｎｇＡｎｍｉｎｇ，ＸｕＭａｏｑｉＤｅｐａｒｔｍｅｎｔｏｆＵｒｂａｎＳｃｉｅ...     

Effect on Stratum Gradient Frequency Distribution of Landslides in the Three Gorges Area of Northeast Chongqing

0IntroductionThe landslides are serious and widespread in the ThreeGorges Area.Bythe research of occurrencelawof land-slidein the Three Gorges Area,the government can forecastand prevent the disaster.It can also ensure the safety of oper-ation of Three Gorges Reservoir and it is of quite i mportantsignificance to ensure the continuous development of the econ-omyinthe Yangtze River valley[1-3].Manyfactors have played different rolesinthe process ofoccurrence and development of landslides.A…     

Trend of urban system structure under the restriction of water and land resources in Xinjiang

On the basis of studies on water and land resources affecting urban development and urban system structure in Xinjiang, this paper analyzes the utilization status and shortage of urban water resources. It is considered that both the consumption and waste of urban water resources are in an increase trend. Most cities and towns in Xinjiang are in shortage of water resources, however, waste of water resources are serious, especially in small towns. The development of the megapolis and moderate cities is evidently restricted by limited land resources. Though there are relatively large spaces of expanding the small cities and towns, the output benefits of water and land resources are low. In order to achieve the ordinal expansion of urban system structure in Xinjiang, it is suggested to take the urban spatial development pattern of ＂one circle and three belts＂ and the resources-economized strategy in the rapid development of urbanization.     

Discovery of a large area of ice-wedge networks in Ordos： Implications for the southern boundary of permafrost in the north of China as well as for the environment in the latest 20 kaBP

Deep sea deposits, ice cores and loess deposits have been used extensively and successfully, to study global climatic changes. Since permafrost is a consequence of cold climates, indicators of permafrost can also be used to reconstruct ancient climates in certain areas during certain periods. The recent discovery of large areas of ice wedge networks, and determination of their ages, have enabled us to locate the southern boundary of the permafrost that ex-isted in China about 20 thousand years…     

城市地貌环境的脆弱性研究

城市地貌环境具有两大地域系统和三类地貌单元。由于城市中人类活动产生的反馈效应日益强化，城市地貌环境具有明显的脆弱性，表现为：环境变异敏感度高，环境的持续利用性降低和环境对灾变的承受弹性较小。     

重庆市主城区城市空间形态演变研究

运用分形理论中的边界维数对重庆市近30年的城市空间结构形态变化进行定量分析,揭示重庆市不同时期的城市地域扩展方式.结果显示,重庆市主城区各区在各个时期城市形态具有差异,整体上重庆市城市建成区在30年间的发展使得图形破碎度降低,其中1980～1997年为城市地域的快速发展期1,997～2001年为高速波动发展期,2001～2010年为高速发展并有趋于稳定趋势发展期.     

重庆城市道路交通管理的公共治理研究

传统的以行政管制为主的行政管理模式已不适应日益复杂的城市道路交通管理,以多主体参与为主的公共治理是有效实施交通管理的途径.     

重庆城市道路交通管理的公共治理研究

传统的以行政管制为主的行政管理模式已不适应日益复杂的城市道路交通管理，以多主体参与为主的公共治理是有效实施交通管理的途径．     

重庆东北地区土壤地球化学研究

利用本次调查所得土壤分析数据,研究了重庆奉节地区表层土壤中元素含量分布特征,大体可分为均匀分布型、弱分异型和分异型,并归纳出土壤元素含量和分布受地质背景和人类活动的双重控制。重点对重金属Cu、Zn、Ni、Hg、Pb、Cr、Cd以及类金属As进行分析和测定,并对土壤中重金属污染进行了初步环境质量评价,发现调查区基本无重金属污染,土壤质量达到自然背景水平,是适合脐橙种植的重点地区。     

关于重庆市投资环境的初步研究

本文从研究重庆市投资环境的必要性分析了影响重庆市投资环境的因素,并就某些劣势环境提出了几点改善建议.     

重庆市生态环境问题与可持续发展对策探讨

重庆市都市区近些年来的经济高速发展和水土资源的高强度开发,引发了一系列资源环境问题.本文针对其主要生态环境问题,在分析其原因的基础上,提出以下整治整合对策:优化工业结构与空间布局;推行企业绿色化战略和清洁生产;加大环保投入,加强重点环保基础设施建设;综合决策,做出完善的城市环境规划;完善生态环保观测站点,建立都市区生态环境信息处理及预警系统,对都市区实施生态系统管理;加强法律建设,健全法规,严格执法.     

转型视角下重庆市民营经济税收环境完善研究

民营经济税收环境的完善是其可持续发展的重要保障。本文从税收政策角度,探讨＂新36条＂出台后,如何破除重庆市民营经济发展中存在的玻璃门、弹簧门现象,推进自主创新,解决转型升级的税收发展环境问题,从而促进重庆市民营经济的健康持续发展。     

城市环境污染的经济损失及其评估--以山城重庆为例

城市环境污染具有典型的外部性特征,如何准确计量其污染而引起的经济损失是学术界一直探讨的核心问题.本文较全面地进行了城市环境污染所引致经济损失的类别与途径分析,并运用市场价值法、疾病成本法、机会成本法、影子工程法等环境经济学的基本原理和方法,计算了山城重庆2002年城市环境污染的经济损失,约为89.95亿元,占当年该市GDP的4.57%,财政收入的37.54%,证实了中国西部部分城市环境污染经济损失较高的结论.     

重庆市城市经济区系统分类发展研究

重庆直辖市是具有大城市大农村特征的城市经济大系统,其中各地区内的自然环境与经济发展状况差异明显,从而形成各具特色的经济子系统,这在重庆管辖的40个区市县中表现比较突出。文章将这40个区市县看作重庆这一大城市经济区系统中的子系统,拟定最能反映城市经济影响力和区域经济发展水平的6个主要经济指标,采用聚类分析法并根据经验和现实情况将这40个子系统归为5类,揭示出这5类城市经济区的经济发展水平的显著差异和空间分布符合中心地理论模式,即不同发展水平的城市经济区子系统呈圈层与点轴分布相结合的特征,提出了今后各类城市经济区的发展方向和目标。