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31.
Bringing together concepts from the global production networks and evolutionary economic geography literature, this article empirically examines the trajectory of the electrical and electronics industry in Johor (Malaysia). Based on trends in firm entries and exit as well as interviews with companies, we find limited robustness in the industry’s trajectory. While there is evidence of the role of ‘structure’ in this outcome, we argue that human agency – particularly the actions of subnational policy-makers – is key. This is manifest in a preference for fostering regional ‘adaptiveness’ through the often uncritical promotion of a diversity of economic sectors. This compromises the meaningful pursuit of regional ‘adaptation’ in the form of new and more complex branches emerging from existing industries. This arrested development, in turn, hinders an effective strategic coupling between the regional economy and multinational corporations, thus undermining regional resilience.  相似文献   
32.
Assessment of human health impact caused by air pollution is crucial for evaluating environmental hazards. In this paper, concentrations of six air pollutants (PM10, PM2.5, NO2, SO2, O3, and CO) were first derived from satellite observations, and then the overall human health risks in China caused by multiple air pollutants were assessed using an aggregated health risks index. Unlike traditional approach for human health risks assessment, which relied on the in-situ air pollution measurements, the spatial distribution of aggregated human health risks in China were obtained using satellite observations in this research. It was indicated that the remote sensing data have advantages over in-situ data in accessing human health impact caused by air pollution.  相似文献   
33.
The proposed work is incorporated into the research theme concerning the maintenance and inspection of sensitive facilities in production systems. It is essential to promote the methodological deployment of inspection techniques to ensure the good functioning of services provided by complex production systems as well as their different components. We use a risk-based inspection methodology offering an organized analysis with knowledge sharing for collaborative possibilities in a multidisciplinary context and it consists of the following steps: data acquisition and information collection, failure analysis (probability and consequences), risk assessment, inspection plan, mitigation and revaluation. The application of this methodology can improve the maintenance management strategies of industrial companies. The inspection department is able to forecast its potential failure, root causes and impacts on the safe operation of the considered production system, based on a reliable inventory of existing situations and review options for continuous improvement in maintenance management. In particular, we addressed the application of a Risk-Based Inspection (RBI) methodology in the French petroleum company with operations on the west coast of central and southern Africa. The incorporation of expert knowledge into risk assessment is helping to find the best preventive plan for pipeline inspection in the case study.  相似文献   
34.
人为干扰对滨海湿地生态系统的影响   总被引:1,自引:1,他引:0  
对滨海湿地生态系统的主要人为干扰方式进行了系统辨识,详细阐述了不同人为干扰方式对滨海湿地生态系统结构、功能及服务的影响。综合分析了人为干扰造成的滨海湿地生态系统的结构改变、功能破坏、服务减少,其中,城市化、工业化进程干扰对滨海湿地生态系统的影响最为严重,并提出了滨海湿地保护对策。  相似文献   
35.
人类活动对1961~2016年长江流域降水变化的可能影响   总被引:1,自引:0,他引:1  
沙祎  徐影  韩振宇  周波涛 《大气科学》2019,43(6):1265-1279
人类活动造成的温室气体浓度增加对气候变化的加剧做出了贡献,降水作为重要的气象要素和水循环组成部分,人类活动对其时空变化特征的影响也是当下研究的重要课题。本文以长江流域为例,利用1961~2016年CN05.1逐日降水数据和20世纪气候检测归因计划(C20C+D&A Project)中CAM5.1-1degree模式的逐日降水结果,分析了人类活动对长江流域年降水量及三个极端降水指数时空变化的影响。结果表明:包含人类活动及自然强迫因素的现实情景(All-Hist)的模拟结果与观测结果较为相近。All-Hist情景下的多试验集合平均结果对长江流域降水的模拟能力较为可靠。通过对比两种情景下模拟的长江流域降水量时空变化特征发现:考虑人类活动影响后,长江流域平均降水相对于仅考虑自然强迫情景下时呈现减少趋势,且减少趋势随时间推移加剧;极端降水受人类活动的影响随时间呈现出的增加趋势有所削弱;对平均降水及极端降水变化趋势的影响存在空间差异性,其中受人类活动影响最严重的是上游中部、东南部及中下游东南部地区,均呈现减少趋势;但在长江上游西南部极端降水受人类活动影响显著增加,需要加强该区域洪涝预防工作。另外,人类活动对平均降水的减少贡献最大的时段为2000~2009年,影响最明显季节为秋冬两季;人类活动对极端降水的影响与降水的极端程度成正相关,降水极端性越强,受人类活动影响的变化程度更大,且空间分布上的差异性也更加显著。  相似文献   
36.
Environmental NGOs are increasingly called upon to respect human rights when undertaking conservation programs. Evaluating a family planning program running alongside marine management measures in Madagascar, we find that family planning services provided by an environmental NGO can support women’s reproductive rights. Family planning services allow the option of smaller families, and give more time to work, increased income and better health. These benefits do not translate into increased support for, or participation in, marine management, however, and women who are able to work more are typically fishing more. We identify patriarchal norms as a key factor preventing the family planning programme from manifesting in improved resource stewardship, limiting opportunities for women to participate fully in resource management meetings and diversify their livelihood outside traditional tasks, including fishing. We propose that a successful human rights-based approach must be more comprehensive, targeting multiple rights and challenging existing institutions and power structures.  相似文献   
37.
李健  郭宏业  黄勇  王永贵 《高原地震》2006,18(3):58-64,68
根据柴达木盆地水资源的形成与分布,结合盆地水资源时空分布不均匀性,分析了盆地水资源开发利用现状,探讨了地表水、地下水开发利用模式,对盆地的生态环境现状和人类对水资源的开发利用不当而引起的一系列环境问题,提出了进一步加强对水资源的保护,调整农业种植结构,提高人们节约用水意识,加强对现有荒漠沙生植被的保护,科学合理利用有限的水资源,使人与自然和谐发展,促进盆地经济建设和生态环境可持续发展。  相似文献   
38.
The formal opportunity to learn geography in the United States is unevenly distributed across space, creating possible geography deserts. Data on the number of exams taken in Advanced Placement Human Geography (APHG) and bachelor’s degrees earned in geography are mapped at the state and regional scales. Normalized rates are ranked and grouped into quintiles. For APHG exams, states in the southeastern region of the United States are in the uppermost quintiles while states in the northeastern region are in the lowermost quintiles. The pattern for bachelor’s degrees in geography is somewhat the spatial inverse of that for APHG.  相似文献   
39.
300 BC-1900 AD无定河流域城镇时空格局演变   总被引:2,自引:1,他引:1  
佟彪  党安荣  许剑 《地理学报》2019,74(8):1508-1524
通过分析和整理从战国中晚期(约300 BC)至清末(约1900 AD)无定河流域历代县级及以上城址的位置、兴废年代数据,结合行政区划沿革、经济社会发展、政权更迭等资料,分析流域城镇格局的时空演变过程。研究表明:① 受气候周期性波动影响,无定河流域城镇的兴起与衰废具有明显的周期性特征,城镇几何中心的移动轨迹具有明显的“西北—东南”向潮汐性运动特征;② 城址存续年限普遍较短,具有明显的阶段性特征,流域内曾存在过4个阶段性中心城镇,中心城镇移动的方向和过程与城镇几何中心的潮汐性移动过程趋势一致;③ 流域城镇空间格局可分为3种类型,即秦汉与隋唐时期的沿河流谷地分布,宋、明两代的沿边境线与长城分布,以及元、清两代集中于流域下游分布。流域城镇未来的发展布局应重视气候变化对城镇分布的长期影响,关注区域环境的脆弱性,合理安排城镇体系发展规模与布局。  相似文献   
40.
2018年9月和12月,两次调查了广东雷州珍稀海洋生物国家级自然保护区海域海水的环境质量。结果表明,该保护区平均综合水质指数为0.38,一类海水平均达标率为93.59%,海水中铅、磷酸盐、锌的含量达标率偏低,分别为53.85%、73.1%、96.15%。12月保护区海水中的无机氮、磷酸盐、溶解氧、叶绿素a含量明显高于9月,保护区实验区和缓冲区站位的水质优于核心区站位的水质。该保护区海域综合水质定性评价结果为优。靠近康港附近站位的营养盐相对偏高,磷酸盐的平均达标率仅为73.1%,因此,需加强对康港附近海域养殖情况的监控,尽量减少养殖废水对保护区海域的排放,保持保护区海水清洁,以利于对保护区内珍稀海洋生物及其栖息地的保护。  相似文献   
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