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21.
1996年以来,中国确定了污染防治与生态保护并重的方针,<全国生态环境保护纲要>进一步明确了全国生态保护的目标和任务,为切实加强生态环境保护工作力度,充分体现生态环境保护"预防为主、保护优先"的原则,环境监察工作必须从单一的工业污染源监察向工业污染源监察与生态环境监察并重转变.文章在阐述城市生态环境监察概念的基础上,探讨了开展城市生态环境监察的原则、内容和方法. 相似文献
22.
在系统分析与初期实施的基础上,通过计算机仿真技术对后期~2010年提出进一步综合开发治理规划,并对规划实施的支撑条件进行了研究,这些研究丘陵农村的发展提供了具有参考意义的信息资料。 相似文献
23.
IntroductionAsanewbranchofecologyandaninterdisciplinaryfield,theecologicalengineeringwasinitiallyformulatedintheearly1960s.Durin... 相似文献
24.
Industrial ecology: a new field or only a metaphor? 总被引:1,自引:0,他引:1
In the 10 years since industrial ecology first became a topic of academic interest, it has grown as a field of inquiry and has produced a community of practice in several sectors including academia, business, and government. Even as the shape of industrial ecology becomes clearer, questions remain as to its lasting power beyond the metaphor that gave it its distinctiveness. This paper examines the development of industrial ecology and assesses its progress towards becoming a field of academic inquiry. And, in a related analysis, I look at the progress industrial ecology has made in establishing itself as an institutional (cultural) basis for action in the above sectors. Ideas like industrial ecology must become institutionalized if they are to have much effect on the reality of everyday activities. 相似文献
25.
在可持续发展中推进我国生态型小城镇建设 总被引:2,自引:0,他引:2
随着我国城市化的发展,小城镇建设也成了城市化过程中的一个重要环节。建设好小城镇即是走出一条我国农村社会现代化,农村人口城市化的路子[2]。我国小城镇建设的环境问题[3],是缺乏环境规划和环保能力薄弱、生活污染严重、乡镇企业布局分散、村镇建设与周围环境亲和性差。针对目前小城镇建设存在的问题,从社会经济环境可持续发展的战略高度对小城镇的生态建设思路进行了有实际意义的讨论。 相似文献
26.
生态科学在现代景园设计中应用的发展 总被引:1,自引:0,他引:1
现代风景园林设计越来越科学化,人性化,其核心就是引入了生态科学的系统思想和方法。通过对近现代西方景园设计中生态科学应用发展阶段的阐述,说明生态科学在景园设计中应用的发展过程。表明现代景园设计的发展方向就是生态系统科学与景观设计紧密结合的综合设计理念。 相似文献
27.
呼市大气环境质量的主要污染因子是悬浮颗粒物。文章通过分析TSP的构成,说明了生态建设与能源结构调整是根治TSP浓度过高的两个主要手段。文中采用大量统计数据,科学论证了治理工程,呼市的大气污染一定能得到根治。 相似文献
28.
黄河下游堤防地质信息管理及安全评价系统(LHEGIS)开发 总被引:3,自引:0,他引:3
在对黄河下游堤防地质信息分析的基础上,根据系统需求,建立了黄河下游工程地质灾安评价系统。该系统将数据库管理和图形管理系统有机结合,不仅实现了数据库的输入,输出,统计分析,以及其与图形属性库之间的转换与管理,而且实现了信息的空间查询,空间分析,图形编辑,输出和图形管理,系统同时提供堤岸稳定性评价的方法和其它实有工具,为黄河下游堤防安全管理和规划提供了辅助决策工具。本文主要从系统功能需求分析,设计原则和开发方法,系统基本框架,及开发实施等五个方面,对系统开发进行了较详细地介绍。 相似文献
29.
/ The valleys of European piedmonts constitute changing narrow corridors within which water, matter, nutrients, energy, and species flow. The dispersion patterns of these flows have been significantly disturbed since the end of the 18th century. Thus, western European valleys have been changed into complex mosaics by implementation of socioeconomical programs. In order to define future actions allowing the preservation of this "ecocomplex" (Blandin and Lamotte 1988), it is necessary to gather precise information of the landscape dynamics. Hence, the study of the European river valleys must be based upon two major steps: (1)the analysis of the present landscape with suitable remote sensing techniques, allowing us to map the complex mosaic of narrow corridors; and (2) the analysis of temporal landscape development patterns since the first engineering works that have transformed the braided channel system. In this paper, the efficiency of the addition of two techniques is highlighted: (1) the "wavelet merging method" from multispectral and panchromatic SPOT images for the floodplain land-cover mapping, and (2) the historical reconstruction techniques from old maps and archive documents in order to analyze the cumulative impacts of engineering works on landscape diversity. To illustrate the method, a particularly complex case study is chosen: the Arc/Isere confluence (downstream from Albertville, Savoie, France). Remote sensing, field survey, and historical reconstruction allowed us to distinguish two types of spatial units: (1) the "functional sets" characterized by independent state factors (edaphic, hydrological, and topographic) and supporting a limited number of vegetation types (spontaneous or cultivated), and (2) the functional unit (= ecotope), which corresponds to a unique combination of vegetation type/functional set.KEY WORDS: Landscape ecology; Floodplains; Vegetation; Land use; Remote sensing; Historical reconstruction; Mapping; Merging methods; Human impacts; Alps; Isere river; France 相似文献
30.
Gerard McMahon Jerad D. Bales James F. Coles Elise M. P. Giddings Humbert Zappia 《Journal of the American Water Resources Association》2003,39(6):1529-1546
ABSTRACT: This paper presents the results of a study on the use of continuous stage data to describe the relation between urban development and three aspects of hydrologic condition that are thought to influence stream ecosystems—overall stage variability, stream flashiness, and the duration of extreme‐stage conditions. This relation is examined using data from more than 70 watersheds in three contrasting environmental settings—the humid Northeast (the metropolitan Boston, Massachusetts, area); the very humid Southeast (the metropolitan Birmingham, Alabama, area); and the semiarid West (the metropolitan Salt Lake City, Utah, area). Results from the Birmingham and Boston studies provide evidence linking increased urbanization with stream flashiness. Fragmentation of developed land cover patches appears to ameliorate the effects of urbanization on overall variability and flashiness. There was less success in relating urbanization and streamflow conditions in the Salt Lake City study. A related investigation of six North Carolina sites with long term discharge and stage data indicated that hydrologic condition metrics developed using continuous stage data are comparable to flow based metrics, particularly for stream flashiness measures. 相似文献