可持续发展和地下水资源的开采[外文翻译].doc
![资源得分’ title=](/images/score_1.gif)
![资源得分’ title=](/images/score_1.gif)
![资源得分’ title=](/images/score_1.gif)
![资源得分’ title=](/images/score_1.gif)
![资源得分’ title=](/images/score_05.gif)
《可持续发展和地下水资源的开采[外文翻译].doc》由会员分享,可在线阅读,更多相关《可持续发展和地下水资源的开采[外文翻译].doc(42页珍藏版)》请在淘文阁 - 分享文档赚钱的网站上搜索。
1、Four short words sum up what has lifted most successful individuals above the crowd: a little bit more.-author-date可持续发展和地下水资源的开采外文翻译可持续发展和地下水资源的开采外文翻译本科毕业论文外文翻译外文题目:Sustainable development and groundwater resources exploitation 出 处:Environmental Geology 34 (2/3) May 1998 .Springer-Verlag 作 者: F. Vi
2、llarroya . C. R. Aldwell Sustainable development and groundwater resources exploitation Abstract. In evaluating groundwater development both the positive and negative effects must be considered; otherwise biased conclusions may be reached. Only with equal concern for the needs of present and future
3、generations, fair exchange of technology between countries and user involvement can sustainable groundwater development be achieved. Examination of the use of the term aquifer overexploitation shows that there is no agreement on a single definition. In most cases it relates to the overuse of aquifer
4、s, but in other cases it is a planned overuse. In Spain, overexploitation is dealt with in the water act and implemented by the regulations that enforce that act. Experience has shown that without the cooperation of the water users themselves, good results are not obtained. Relevant education is urg
5、ently needed for the public and those decision makers responsible for determining the correct use of groundwater resources for the present and future generations.Key words Groundwater development , Aquifer overexploitationAre future groundwater resources at risk?To answer the question whether future
6、 groundwater resources are at risk, it is necessary to study both the quantity and quality aspects of groundwater. Water (surface and groundwater) is one of the most pervasive substances on Earth. The total volume of all water is about 1400 million km3, but only 2% is fresh water. The current rate o
7、f withdrawal is about 3500 km3/year, some 2100km3 for consumptive use, while 1400 km3 of wastewater is returned to rivers. Groundwater withdrawals (percent by sectors) are: domestic, industry and agriculture (Shiklomanov 1991). Margat (1991) stressed the need to improve water evaluation studies and
8、quantified the amount of groundwater pumpage use in various countries. His list places the first fifteen countries as follows (in km3 per year): India 150, USA 101, China 74.6,USSR (former) 45, Pakistan 45, Iran 29, Mexico 23, Japan 13.1, Italy 12.1, Germany 9.5, Saudi Arabia 7.4, France 7, Spain 6.
9、3, Turkey 5 and Madagascar 4.9.The main threat to groundwater today is from point and diffuse source pollution. Therefore groundwater quality protection is the key issue of groundwater resources policy in the industrialized countries. There are many sources of risk to groundwater, as discussed in th
10、e seminar on groundwater for the EU countries. RIVM and RIZA (1991) summarize the problems and threats to ground water resources. The current practices in all the EU countries lead to a non-sustainable use of groundwater systems. The dramatic Dublin Statement emphasizes the unsustainable use of grou
11、ndwater: “Human health and welfare, food security, industrial development and the ecosystems on which they depend, are all at risk, unless water and land resources are managed more effectively in the present decade and beyond than they have been in the past”.Groundwater resources exploitation and su
12、stainable developmentWhat does sustainable development mean? In fact, we are asking if we are using wisely the resources needed for our life-support system. The general conclusion of the seminar of ministers of the Environment of the EU countries , was that in many countries sustainable use of groun
13、dwater for drinking and other (industrial, ecological, etc.) functions is being threatened, especially in the agricultural and industrial core regions of the EU.Sustainable development must satisfy present needs without jeopardizing the ability of future generations to satisfy theirs. Overexploitati
14、on may take place during a period to allow better use of other resources, or while other technologies develop. Uncontrolled aquifer development easily leads to extensive aquifer exploitation and even to severe forms of overexploitation.Aquifer exploitation and sustainable developmentMargat (1993) sp
15、eaks of Malthusian under exploitation in the case of inadequate use of an aquifer. In the opinion of Custodio (1993), “intensive aquifer exploitation is a source of wealth, which fosters regional development and helps to guarantee a supply until other water sources can be economically developed”.Gro
16、undwater overexploitation has a series of negative consequences, such as increasing water cost, environmental changes (affects on wetlands, salinity problems, etc), reduction of other water sources already in use, water salinization and impairment of quality. The net result, however, may be either n
17、egative or positive. Positive results dominate at a regional level, but negative results are “news that trigger alarm bells and Malthusian forecstsm under the heading of overexploitation” (Custodio 1993). On the other hand, intensive exploitation or overdraft are mainly points of view, referring to
18、the consequences of intensive groundwater use, as perceived by environmentalists, the news media and the public in general, and place emphasis on the adverse or detrimental aspects.Therefore, in order to evaluate groundwater exploitation, not only negative effects but also positive ones have to be c
19、onsidered: “otherwise a biased appraisal may be reached. Normally, practice shows us that beneficial aspects dominate over detrimental ones in most practical situations” (Custodio 1993). According to this last author, the most serious cause of aquifer exploitation is ignorance of what is happening,
20、and negligence in producing the data needed to evaluate the hydrogeological and economic situation correctly. Another harmful effect is the irresponsible overreaction of water authorities, especially when they are poorly informed or lack the scientific and technical skills to evaluate current proble
21、ms correctly.The most important action is to solve problems as they appear and not waste time and energy in defining terms. Any exploitation of water resources that is not managed in an integrated way, taking into account the needs of the present and future generations, puts these resources at risk.
22、 Such development therefore is not sustainable.Regulatory issues related to aquifer overexploitation Aquifer overexploitationThe introduction lists several recent conferences which have highlighted overexploitation of aquifers. Within the conference proceedings, there is no single agreed definition
23、of overexploitation. Spanish Legislation (Royal Decree 849/1986) defines it in article 171.2 in the following terms: “An aquifer shall be considered to be overexploited, or in danger thereof, if the reserves existing therein are being placed in immediate danger as a result of annual withdrawals that
24、 are in excess of, or very close to, the volume of the average annual recharge (renewable resource) or which give rise to serious deterioration in the quality of the water”.According to Dijon and Custodio (1992), exceeding the limits of a renewable resource is not necessarily overexploitation. Conve
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- 外文翻译 可持续发展 地下水 资源 开采 外文 翻译
![提示](https://www.taowenge.com/images/bang_tan.gif)
限制150内