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81.
The impact of tourism on coastal areas 总被引:5,自引:0,他引:5
Erdmann Gormsen 《GeoJournal》1997,42(1):39-54
The manifold influences of tourism on coastal areas are analysed from three different angles: (1) The development of seaside tourism including the changes of socio-economic and settlement patterns; (2) its cultural impact on the local population; (3) its environmental aspects. Point 1 is described with the help of a model showing four peripheries in space and time: (I) the North Sea and Baltic coasts since the 18th century; (II) Southern Europe during the 19th century; (III) the North African shores around 1950; (IV) the tropical oceans after 1965. Within every periphery, several phases (pioneer, domestic, international) can be distinguished according to the origin of tourists, the investment, the know-how etc. While the beginning of every phase is dominated from abroad, later-on national actors play an increasing role. This applies also to point 2, which refers mainly to developing countries. As for point 3, mass tourism may result detrimentally on water supply, sensitive coastal landscapes, socio-cultural identity etc. Among the questions to be raised are: How far are industrial societies responsible for any negative impacts of tourism, and what are the chances for, and a general consciousness on, a sustainable tourism development? 相似文献
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催化臭氧化降解有机废水及影响因素 总被引:2,自引:0,他引:2
主要论述了自制的V-O型催化荆催化臭氧化降解有机废水的研究。试验表明,以TiO2,SiO2,ZrO2作栽体,在氮气或氧气中焙烧,而制得的6种催化荆中,V-O/SiO2/N2显示了较好的催化性能和活性;通过催化荆吸附试验和在反应体系中加入一定量的自由基猝灭荆,初步探讨了其催化机理,即催化荆和臭氧反应,生成了氧化性极强的羟基自由基;催化臭氧化时间、催化荆用量、进气臭氧浓度、体系pH值等因素均对降解产生一定的影响。 相似文献
85.
详细介绍了内江松柏寨的七山、七堰、八景等自然景观;对以般若寺为代表的寺庙、寨门以及历代名人所留下的行踪和墨迹作了生动描写;提出以生态旅游为理念进行统一规划,并采取保护性开发的若干建议。 相似文献
86.
中国高放废物地质处置:现状和展望 总被引:2,自引:0,他引:2
本文阐述了中国的高放废物处置政策,回顾了中国高放废物地质处置在选址和场址评价、缓冲回填材料等方面的进展,提出了中国高放废物地质处置的初步规划,指出我国计划在2015年确定地下实验室场址.还展望了国际合作前景. 相似文献
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Researching the South African tourism and development nexus 总被引:1,自引:0,他引:1
Under apartheid, tourism was essentially anti-developmental in focus and tourism research largely centred on the recreation
of white South Africans. Since the 1994 democratic transition tourism has become recognised as an increasingly important sector
for South Africa's economy and for achieving the government's goals for reconstruction and development. In this paper a review
and critical analysis is presented of the changing directions and foci of tourism scholarship in South Africa. It is shown
that South African scholars are beginning to respond to the challenges posed by tourism as a developmental focus.
This revised version was published online in August 2006 with corrections to the Cover Date. 相似文献
89.
Simplified evaluation for swelling characteristics of bentonites 总被引:9,自引:0,他引:9
Bentonite is currently planned to be used as buffer and backfill materials for repositories of high-level nuclear waste because these materials must have the swelling characteristics to seal the waste. In the design for buffer and backfill materials, we must choose the adequate bentonite among many kinds of bentonite in the world. The database of the swelling characteristics of various bentonites and its evaluation will be available when we will select the adequate bentonite. For this purpose, this study performed the laboratory tests on the swelling pressure and swelling deformation of four kinds of bentonite produced in Japan and the United States. These bentonites have different physicochemical properties. This study investigated the characteristics of swelling pressure and swelling deformation from the viewpoint of the physicochemical properties of each bentonite. Furthermore, this study also proposed the simplified evaluation of swelling characteristics of various bentonites on the basis of microscopic analysis. 相似文献
90.