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221.
Pérez-Hugalde C Romero-Calcerrada R Delgado-Pérez P Novillo CJ 《Journal of environmental management》2011,92(4):1128-1137
This work analyses land cover changes occurring between 1990 and 2000 within a Natural Protected Area, southwest of Madrid (Spain). We develop a new methodology that considers the net change in different land cover categories in each municipality of the study area. Our methodology, which uses Factorial Correspondence Analysis, allows identification of the most important changes at the municipality level and groups the municipalities where land use dynamics are similar. This method is a powerful tool for synthesis and can potentially be applied to non-spatial geographical data sources (e.g. agrarian census statistics). Our results show that the land cover around SW Madrid is highly dynamic. The shrub vegetation, arable land, heterogeneous agricultural and human-created area categories show the highest total change. The dynamics of the changes detected are dominated by decreases in the area of different types of crops and increases in forest areas. These changes may have indirect effects on the conservation of natural resources and wildlife if not managed appropriately. 相似文献
222.
《\"十三五\"生态环境保护规划》是第九个五年环境保护规划,规划的编制面临新形势新要求,承载了大量新内容和新任务,在规划的理念、战略、领域、任务、支撑等方面都有显著的拓展与深化。本文通过对规划进行系统梳理,提炼出10个方面的关键词和新提法并逐一解读,以便于读者对规划深入理解和精准把握。 相似文献
223.
随着我国环境保护形势的发展,环境法制体系的逐步健全,作为环境保护综合性法律的《环境保护法》在某些方面逐渐显现出滞后性。《环境保护法》的修改与完善,学术界已讨论了很长时间。本文主要从政府管理的角度,对《环境保护法〉的进一步完善进行了一些探讨。 相似文献
224.
为了预防公共卫生风险、保护生态环境,全国人大常委会于2020年2月通过了《关于全面禁止非法野生动物交易、革除滥食野生动物陋习、切实保障人民群众生命健康安全的决定》(以下简称《决定》)。《决定》通过黑名单和白名单明确了禁食野生动物范围和可食动物范围、人工繁育的特殊情形,从猎捕、交易、运输、食用环节全过程开展监管和协调执法。本文深入剖析了《决定》出台的意义和目的、《决定》的主要内容和亮点,并提出了贯彻落实《决定》的措施建议。建议科学制定国家级畜禽遗传资源保护名录和国家水产品遗传资源保护名录;建立全国统一的执法信息平台和违法举报平台,建立执法考核制度和问责办法;持续提供相应保障;加强国际合作和公众参与。 相似文献
225.
中央生态环境保护督察是党中央、国务院推进生态文明建设和生态环境保护工作的重大制度创新。《中央生态环境保护督察工作规定》于近期正式出台,首次以党内法规形式明确了生态环境保护督察的制度框架、程序规范、权限责任等。从发展历程来看,我国生态环境保护督察大致经历了督企为主、督政督企并举、党政同责三个阶段。生态环境保护督察具有突出政治站位、压实责任,坚持问题导向、强化震慑,突出边督边改、取信于民等基本特征。为强化成果应用,全面准确把握当前我国生态环境保护工作的重点难点,本文设置7个一级指标和18个二级指标对首轮中央生态环境保护督察所指问题的分布特征进行统计分析,初步剖析问题产生原因,并从督察对象、督察内容和督察体制方面对第二轮中央生态环境保护督察进行了展望。 相似文献
226.
For an accident involving a large-scale internal floating-roof tank with 28.4 m diameter and filled with 4600 m3 gasoline, the actual behavior of the gasoline fire and the fire-fighting strategies that were applied to it were analyzed in terms of the heat release rate, burning rate, and regression rate. During the accident, the initial fire suppression strategy failed and the gasoline was moved to an external tank. A total of 2800 m3 gasoline was burned for 17 h with a resulting heat release rate of 1475 MW. The long duration of the fire burning was attributed to the burning surface of the gasoline, which was not covered with foam at the beginning of the fire using the active foam fire-extinguishing system due to damage to one of the foam chambers. The average regression rate of the gasoline was 0.16 m/h after 8 h of burning and 0.35 m/h when the fire was completely suppressed. 相似文献
227.
叙述了海上低凝固点及气液比很小的稠油试生产中对硫化氢气体的监控和防护概况。指出油、气、水流程均应采取全密闭式,其监控系统应包括硫化氢探测装置和报警系统,防止人体伤害的防护系统应有多种设备、仪器。此外,还应注意凡上岗工作人员均应事先加以培训,合格后才可正式工作。在采取以上所有监控防护措施后,在日常的安全生产中,未停产一次,也未伤一人。 相似文献
228.
这篇文章主要对美国和欧盟物联网发展历程进行了概述,并对欧盟的一系列物联网政策文件《欧盟物联网行动计划》、《未来物联网战略》等进行解读,最后重点分析了美国City Sense, MARVIN物联网环保应用案例和欧洲OSIRIS空气质量传感网、Sensaris穿戴式无线传感器监测系统、河川水质污染管理与预警系统等重要物联网环保应用项目。在此基础上,结合中国环保物联网发展现状提出相关建议。 相似文献
229.
The United States Environmental Protection Agency (USEPA) Region V Clean Lakes Program employs artificial and modified natural
wetlands in an effort to improve the water quality of selected lakes. We examined use of wetlands at seven lake sites and
evaluated the physical and institutional means by which wetland projects are implemented and managed, relative to USEPA program
goals and expert recommendations on the use of wetlands for water quality improvement. Management practices recommended by
wetlands experts addressed water level and retention, sheet flow, nutrient removal, chemical treatment, ecological and effectiveness
monitoring, and resource enhancement. Institutional characteristics recommended included local monitoring, regulation, and
enforcement and shared responsibilities among jurisdictions. Institutional and ecological objectives of the National Clean
Lakes Program were met to some degree at every site. Social objectives were achieved to a lesser extent. Wetland protection
mechanisms and appropriate institutional decentralization were present at all sites. Optimal management techniques were employed
to varying degrees at each site, but most projects lack adequate monitoring to determine adverse ecological impacts and effectiveness
of pollutant removal and do not extensively address needs for recreation and wildlife habitat. There is evidence that the
wetland projects are contributing to improved lake water quality; however, more emphasis needs to be placed on wetland protection
and long-term project evaluation. 相似文献
230.