资源型城市的可持续发展

资源型城市转型,需要正确处理好各方面的关系,选择合适的转型发展战略,充分运用市场经济手段,建立城市的运营新体制,实现资源型城市和地区的可持续发展。     

中国北方典型城市API特征分析

根据中国北方9个典型城市(北京、哈尔滨、青岛、太原、沈阳、大连、呼和浩特、兰州、乌鲁木齐)2002-2008年连续7年的空气污染指数(API)资料,对各月空气污染指数大于200的天数和首要污染物以PM10和SO2出现的天数进行了分析,结果表明冬季污染最为严重,PM10为我国北方9个典型城市(北京、哈尔滨、青岛、太原、沈阳、大连、呼和浩特、兰州、乌鲁木齐)首要污染物。研究还结合北方典型城市空气污染指数的月均值,分析了各地污染的成因;并对环境因素:温度、降水、湿度与空气污染的相关性进行了研究,结果表明:温度、降水与空气污染指数呈负相关;大部分城市湿度与其呈负相关,而乌鲁木齐则为显著的正相关。此外,还以兰州市为例分析比较了不同类型降水对空气污染指数的影响。最后通过比较2006年3月份的一次强沙尘暴期间空气污染指数与2007年同期空气污染指数,讨论了沙尘暴对我国北方空气质量的影响。     

天山北麓绿洲城市化水平空间结构及调控研究

天山北麓城市带的城市随着工业化和运输的发展而变化,其伴随着人口、产业、城市、信息、交通等要素在空间上的集聚与扩散。本文论述了新疆天山北麓绿洲城市带的基本特点和现状特征,在此基础上,分析了城市带的时空演变过程,提出了有序发展的对策与措施。     

小城镇建设与乡镇企业协调发展的几点探索

本文通过对小城镇建设与乡镇企业协调发展的必要性及存在问题的几点分析，提出了为保证乡镇企业与小城镇建设同步协调、健康有序发展的若干政策选择。     

对历史文化名城保护若干问题的探索——以安徽省安庆市历史文化保护为例

历史是人类灵魂的凝结。历史文化名城是历史的记录与再现,是民族最宝贵的资源。保护好历史文化名城,发展好历史文化名城,是后来人应永恒关注的课题。本文以安庆市历史文化保护为例,对历史文化名城的保护作出相关探索。     

国家中心城市竞争力的提升机制研究——以武汉市为例

通过分析国内外国家中心城市的发展现状、特征和功能,提出了国家中心城市竞争力的提升机制,主要包括经济集聚竞争力、空间辐射竞争力、对外开放竞争力、文化创新竞争力、管理服务竞争力和生态保护竞争力;结合武汉市的实际情况,提出了武汉建设国家中心城市的战略重点,以期对未来的国家中心城市发展提供一定的理论指导。     

景观生态学原理在小城镇景观规划设计中的应用

介绍了小城镇景观的定义。分析了目前在小城镇景观规划设计中存在的生态不平衡、忽视非物质性景观、没有自己的特色与品牌、缺乏文化内涵等问题。提出了小城镇景观的生态特征及规划设计的原则。     

Assessing and Managing Soil Quality for Urban Agriculture in a Degraded Vacant Lot Soil

Following the decline of industrial manufacturing, many US cities have experienced severe population reductions that have resulted in large areas of vacant land. Urban agriculture has emerged as a desirable land use for these spaces, but degraded soils are common. Therefore, we measured soil and plant responses to amendments and management in urban lots where vacant houses had recently been demolished in Youngstown, OH, USA. Soil degradation was observed following demolition activities in the form of compaction (bulk density of 1·5–1·8 Mg m⁻³) and low soil microbial biomass C (21 mg C kg⁻¹ soil). Our split‐plot experiment measured the effects of organic matter (OM) amendments produced from yard wastes and the use of raised beds on soil properties and vegetable crop yields. Two years after their application, OM amendments resulted in significant improvement to a number of soil physical, chemical, and biological properties. Vegetable crop yields were improved by OM amendments in 2011 and by both OM amendments and the use of raised beds in 2012. A soil quality index, developed using factor analysis and the Soil Management Assessment Framework, produced values ranging from 0·60 to 0·85, which are comparable to those reported for rural agricultural soils. All results indicate that urban agriculture can be productive in vacant urban land and that amendments produced from urban yard wastes can improve soil quality at previously degraded sites and increase crop yields for urban agriculture. Copyright © 2015 John Wiley & Sons, Ltd.     

Study on Water Use Condition of Residents in Chongqing Small Cities

A survey has been done about the actual state of the water supply and drainage in two Chongqing Small Cities,Yongchuan and Qianjiang in Chongqing metropolitan.The results indicated that in the two cities,the requirement for the water quality of residential use depended on the family income,but still lower than the current standard value.Residents in the two cities have different reflections on the tap water quality.26.21% of residents were not or completely not satisfied with the tap water quality.74.6% of the residents were hoping the local government to improve water supply sanitation and 27.27% of residents were hoping the local government to provide direct drinking water.On the other hand,56.68% of the householders had used pure water as drinking water and more than 85% of residents were willing to pay for improving the tap water quality and treating wastewater.     

Tactics and Ways for Renovation of Old Mountain Cities and Towns

The renovation of old mountain cities and towns is a main point in city construction nowadays. In this paper, the characters of economic and real estate development are analyzed to find out proper ways and new principles for renovation from two aspects as city planning and street space renewal to solve the new problems in our present work.