浅谈太湖流域饮用水安全与地下水保护     

肖裕生  钟华平  谢石连 《上海国土资源》2008,(1):18-20,43

太湖流域经济发达,人口稠密,如管理不善将引发水污染严重、水环境恶化和水质型缺水等水问题,对饮用水安全构成威胁。因此,地下水在保障太湖流域饮用水安全中的作用就显得特别重要,提出了太湖流域地下水保护的对策措施。  相似文献   

岩溶区集中式饮用水源地水质评价与保护——以毕节市倒天河水库和利民水库为例     

莫世江  刘勇  张鹏飞  丁卫红 《云南地理环境研究》2006,18(5):24-27

采用SPSS软件，对2003年01月至2004年12月期间，倒天河水库和利民水库逐月水质监测数据进行数理统计分析，结果表明毕节市饮用水水质污染有较明显的季节变化和空间差异；且不同污染物对水体污染的贡献率各不相同，总磷和粪大肠菌群所占份额最大，方差累积贡献率达77％。在此基础上，利用加权综合污染指数对水体水质污染现状进行综合评价，结果显示倒天河水库和利民水库，水质污染总体较轻．饮用水水质符合《地表水环境质量标准（GB3838—2002）》中Ⅲ类水质标准；最后提出加大水环境保护的建议。  相似文献   

张家口市湿地资源现状、问题与保护对策     

毕君  王超  武明录  毛福玲  付芸生 《湿地科学与管理》2006,2(2):29-33

张家口地区有丰富的湿地资源,张家口的河流、湖淖等湿地对京津地区的水资源供应与调节、生物多样性保护、生态环境的平衡与区域可持续发展关系重大,本文对该区域主要湿地现状、导致其退化的主要原因与问题进行了探讨,并提出了当前湿地保护的建议与对策。  相似文献   

实施流域生态管理的长江中下游湿地保护探讨   总被引：4，自引：1，他引：4  

鲍达明  王学雷  吕宪国 《湿地科学》2006,4(2):96-100

长江中下游地区湿地分布广泛且类型多样,是我国淡水湖泊分布最集中和最具有代表性的地区。为了从根本上解决长江中下游湿地利用面临的问题,实现湿地资源的可持续利用,保护湿地环境,解决区内上、下游用水的供需矛盾,实现水资源的优化配置,调动区域湿地保护的积极性和主动性,有必要遵循湿地流域分布规律,应用流域生态学最新理论与实践成果,进行流域生态管理。一方面,要从流域角度处理好几大江湖关系、蓄泄关系、湖垸关系和山湖(河)关系等;另一方面,在流域内建立统一协调机制,对流域湿地进行保护与合理利用、合理布局和统一规划;同时在保护的前提下,科学合理地利用长江中下游湿地资源,开拓新的生产力。  相似文献   

Planning for source water protection in Ontario   总被引：2，自引：0，他引：2  

J.L. Ivey  R.C. de Loë  R.D. Kreutzwiser 《Applied geography (Sevenoaks, England)》2006,26(3-4):192-209

Ontario began developing a drinking water source protection planning process in 2000, after a rural community's water supply was contaminated by pathogens from agricultural runoff. An expert committee report has recommended legislating a new source protection “sphere of jurisdiction” for municipalities; however, no specific new municipal tools or authorities have been proposed as yet. This paper reports findings from an evaluation of the extent to which existing institutional arrangements for land use planning and water management facilitate or constrain source protection by municipalities. A case study of the Regional Municipality of Waterloo suggests there is the potential to link land use planning more strongly to water management through creative use of existing tools, forgoing the need for major institutional changes.  相似文献   

Rights or Containment? The politics of Aboriginal cultural heritage in Victoria     

Libby Porter 《The Australian geographer》2006,37(3):355-374

Aboriginal cultural heritage protection, and the legislative regimes that underpin it, constitute important mechanisms for Aboriginal people to assert their rights and responsibilities. This is especially so in Victoria, where legislation vests wide-ranging powers and control of cultural heritage with Aboriginal communities. However, the politics of cultural heritage, including its institutionalisation as a scientific body of knowledge within the state, can also result in a powerful limiting of Aboriginal rights and responsibilities. This paper examines the politics of cultural heritage through a case study of a small forest in north-west Victoria. Here, a dispute about logging has pivoted around differing conceptualisations of Aboriginal cultural heritage values and their management. Cultural heritage, in this case, is both a powerful tool for the assertion of Aboriginal rights and interests, but simultaneously a set of boundaries within which the state operates to limit and manage the challenge those assertions pose. The paper will argue that Aboriginal cultural heritage is a politically contested and shifting domain structured around Aboriginal law and politics, Australian statute and the legacy of colonial history.  相似文献   

Historical Auckland on foot     

Gordon M. Winder  Matthew Henry 《New Zealand geographer》2006,62(1):84-88

Abstract:  This paper discusses three walking tour guides prepared for the 12th International Conference of Historical Geographers. It argues that the guides are innovative in terms of format, content and ironic sensibility. It construes them as devices for re-imagining Auckland's urban heritage.  相似文献   

重庆市开-利公路学堂湾滑坡成因与稳定性分析     

吴汉辉  杨转运 《中国地质灾害与防治学报》2006,17(2):33-36

滑坡是现代公路、铁路等交通基建工程面临的一个难题。尤其是在重丘、山地等地段修筑公路工程极易出现滑坡地质灾害。这些滑坡的成因以及相关的边坡稳定性分析目前处于半理论、半经验状态。文章基于学堂湾滑坡的地理位置及地质环境条件,从滑坡区地质环境条件、滑坡周界、滑坡体与滑带的物质结构特征、滑床、滑坡变形破坏迹象等,深入分析了学堂湾滑坡的变形特征。在此基础上探讨了滑坡成因,指出大量的雨水和不合理的施工扰动是滑坡发育的外因;坡体本身的地质条件如岩石的裂隙、岩土体的透水性以及水的疏导条件等是其内因。文章将宏观定性分析与定量计算相结合,对滑坡稳定性进行了分析和评价。结合工程实际对滑坡治理措施进行了初步研究,取得了一些满意的效果。  相似文献   

Faulted backfold versus reactivated backthrust: the role of inherited structures during late extension in the frontal Piémont nappes east of Pelvoux (Western Alps)     

Pierre Tricart  Christian Sue 《International Journal of Earth Sciences》2006,95(5):827-840

In the central part of the internal Western Alps, widespread multidirectional normal faulting resulted in an orogen-scale radial extension during the Neogene. We revisit the frontal Piémont units, between Doire and Ubaye, where contrasting lithologies allow analysing the interference with the N–S trending Oligocene compressive structures. A major extensional structure is the orogen-perpendicular Chenaillet graben, whose development was guided by an E–W trending transfer fault zone between the Chaberton backfold to the north and the Rochebrune backthrust to the south. The Chaberton hinge zone was passively crosscut by planar normal faults, resulting in a E–W trending step-type structure. Within the Rochebrune nappe, E–W trending listric normal faults bound tilted blocks that slipped northward along the basal backthrust surface reactivated as an extensional detachment. Gravity-driven gliding is suggested by the general northward tilting of the structure in relation with the collapse of the Chenaillet graben. The stress tensors computed from brittle deformation analysis confirm the predominance of orogen-parallel extension in the entire frontal Piémont zone. This can be compared with the nearby Briançonnnais nappe stack where the extensional reactivation of thrust surfaces locally resulted in prominent orogen-perpendicular extension. Such a contrasting situation illustrates how the main direction of the late-Alpine extension may be regionally governed by the nature and orientation of the pre-existing structures inherited from the main collision stage.  相似文献   

Groundwater and highways interaction: past and present experiences of highway construction in Slovenia     

Mihael Brencic 《Environmental Geology》2006,49(6):804-813

During the planning, designing, construction, operation and maintenance of highways, groundwater can be of important environmental and constructional constraint that can significantly influence the safety operation of traffic and of big influence on the operational costs of highways. To classify and conceptualize the relation between groundwater and highways, three important groups of problems can be determined: groundwater protection from highway influences, protection of highway from groundwater and economic use of groundwater for highway operation. In the present study, groundwater management strategies are represented during all life cycles of highways. Greater emphasis is given to groundwater protection and field hydrogeological investigations for proper groundwater management related to the highway. The approach adopted in Slovenia and the role of hydrogeology is given as an illustration.  相似文献