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Karen Bridget Murray 《Urban geography》2013,34(2):277-299
In this paper, I develop the concept of “bio-gentrification” as a way to broaden critical theoretical debates on the relationship between gentrification and “social mixing” policies. Bio-gentrification weds urban Marxist political economic insights to the neo-Foucauldian notion of biopower. The former stresses spatial tactics of removal and displacement and value generated through land and property. The latter assesses a wider terrain of spatial tactics, their relationship to knowledge produced about humans as living beings, and their alignment with capitalist urbanization. The Vancouver example illuminates how social mixing “truths” and practices to which they are tied generate value by naturalizing human insecurity in situ and transforming the biological existence of disadvantaged peoples into raw material for profit through a process that can be conceptualized as a “vulnerability bio-value chain.” Bio-gentrification refers to the tension between removal and embedding of disadvantaged peoples and points to the need for a bio-gentrification politics to confront this dynamic. 相似文献
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EVOLVEMENT AND CONTROL OF VULNERABLE ECOLOGICAL REGION——A Case Study in Ongniud Banner and Aohan Banner, Inner Mongolia 总被引：1，自引：0，他引：1
RANSheng-hong JINJian-jun 《中国地理科学(英文版)》2004,14(2):135-141
The evolvement of a vulnerable ecological region is a dynamic process, which is affected by various factors. During the evolvement process, human activities have a decisive effect. The purpose of studying vulnerable ecological region is to control human economic activities and to develop a negative feedback modulation mechanism.This paper established a model of vulnerable ecological region‘s evolvement by considering four synthetic variables.These synthetic variables are ecological carrying capacity, ecological resilience, economic development intensity, and economic development velocity. Finally, Ongniud Banner and Aohan Banner in North China were taken as study cases to simulate the evolvement processes of vulnerable ecological regions under different conditions of economic development. The results show that human activities have an important influence on the evolvement trend of vulnerable ecological region. 相似文献
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随着我国北斗卫星导航系统于2012年底正式对亚太地区提供无源定位、导航、授时服务,卫星导航定位技术逐渐在日常工作和生活中扮演了愈来愈重要的角色。针对弱势群体出行不便这个社会中不可忽视的问题,本文设计并开发了基于Android平台的弱势群体监护帮助系统。该系统能够支持利用北斗、GPS导航定位的各种终端,同时,结合点对点的短信通信方式,实现了安全监控和护理、点位信息共享和轨迹记录等功能,以解决老人、小孩等弱势群体出行过程中的不便甚至安全隐患问题,具有广泛的实际应用价值。 相似文献
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针对传统的AHP型脆弱性指数法在权重确定方面的不足,采用熵权法对其改进,将熵权法计算的客观权重与AHP法计算的主观权重进行加权平均,综合确定各主控因素诱发突水的权重比例。在综合分析长平煤矿水文地质资料的基础上,应用GIS建立主控因素专题图并进行归一化处理,运用基于GIS的改进AHP型脆弱性指数法确定各主控因素权重,建立井田西部3号煤底板奥灰突水危险性评价模型。利用自然间断点分级法确定了分区阈值,将研究区按突水危险性的相对大小分为5个区域。评价结果符合实际,对煤矿安全生产具有重要的现实意义。 相似文献
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黄河堤防险情调查分析 总被引：6，自引：0，他引：6
重点论述了黄河堤防险情发生的原因及特点。经历年对黄河大堤险点、险段统计,包括老口门、管涌、渗水、裂缝、堤身残缺、堤身缺口、顺堤行洪7项,其中渗水变形占险点总数的46％以上,这说明渗透变形问题是黄河堤防的首要问题。截止2002年,采用放淤固堤、修筑前后戗、垂直截渗墙、锥探灌浆等措施,前后两次所编列的113处堤防险点已基本消除完毕。黄河堤防出险情况呈逐年下降趋势,随着标准化堤防的建成,黄河堤防安全将进一步得到提高。 相似文献
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In the Cork Harbour area of SW Ireland, high yield karst and intergranular gravel aquifers are extremely vulnerable to pollution
from a variety of sources, mainly due to the limited protection afforded by the thin cover of low permeability glacial and
alluvial overburden. The main potential sources of pollution are due to rapid urbanisation of the Cork city area and its attendant
infrastructure, and increased industrialisation in the area, with numerous new industries, particularly pharmaceutical and
chemical industries, located around Cork Harbour. Other potential sources of pollution are a number of landfills in the area
and an oil refinery near the mouth of Cork Harbour. Traditional agricultural sources of pollution also exist, due to increased
use of chemical fertilisers. Finally, the susceptibility to saline intrusion of the karst and gravel aquifers around Cork
Harbour is high due to the long coastline of the harbour and the low-lying nature of the karst synclines with their superimposed
buried valleys. 相似文献
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榆神府矿区位于毛乌素沙地与陕北黄土高原丘陵沟壑区的过渡地带,地表覆盖较厚的松散层,常年干旱少雨,植被稀疏,是典型的生态脆弱区。矿区煤层埋藏浅,开采厚度大,上覆基岩厚度较薄。在这种条件下开采容易导致较严重的地质环境问题。通过地质环境单一影响因素的分析选取,利用GIS空间量化,可视化成图和分析功能．评价了研究区地形地貌、沙层厚度、潜水位埋深、煤层厚度和基岩厚度五个单因素的现状及对地质环境的影响．预测了开采单因素空间变化区域。将综合地质环境分为五类,认为煤炭资源的开采对原来处于Ⅰ和Ⅱ类型区域影响比对Ⅲ、Ⅳ和Ⅴ类型的区域影响更大些。 相似文献
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陕北长城沿线地区生态系统服务价值变化研究 总被引：3，自引：1，他引：2
以水土流失严重,土地沙化强烈,生态环境脆弱的陕北长城沿线风沙过渡区作为一个研究对象,通过近14年土地利用变化分析计算了区域生态服务价值的动态变化,反映了土地利用变化的区域环境效应,结果表明:在近14年,土地利用结构发生了明显变化,土地利用类型以农业用地为主,建设用地和园地的增长幅度加大。通过生态系统服务价值核算,本区1992年的生态服务价值为138.94亿元,2002年生态服务价值为146.92亿元,增加了7.98亿元,生态服务价值在增加,这表明该区生态环境质量整体在提高。以土地利用变化为切入点,对土地生态系统服务价值的计算,以货币的形式反映生态系统所发挥的重要作用,即把隐性的、公益性的生态系统作用定量化,它使我们认识到生态系统服务价值在脆弱地域生态系统发挥着重要作用,在追求经济效益的同时,要更多地考虑生态效益,准确地把握人与自然的关系,达到人与自然的和谐发展。 相似文献
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