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951.
Environmental education and financial support of nature conservation are considered among the primary components of the environmentalist
dimension of ecotourism. The potential of environmental education calls for enhancing visitor environmental knowledge and
prompting change of visitor behavior. The present study addressed the evaluation of the environmentalist dimension of ecotourism
in the Dadia Forest Reserve. The first objective of the research was to study the influence of variables determined prior
to the visit, namely, visitor and visit characteristics, visitor environmental information sources, visitor pro-environmental
behavior, and visitation goals, on variables determined during the visit, that is, visitor participation in and satisfaction
from ecotourism activities. The second objective was to study the effect of selected variables on visitor knowledge and behavior
intentions. Visitor participation in and satisfaction from ecotourism activities were primarily controlled by visit characteristics.
Levels of visitor knowledge were quite satisfactory; however, coherence among knowledge items was rather loose. On the other
hand, behavior intention items revealed the highest possible degree of coherence, which should be attributed to the pervasive
influence of visitor satisfaction from watching birds at the Bird Observatory within the Dadia Forest Reserve. Ecotourism
activities, during which the main part of environmental knowledge was offered, exerted no effect on visitor knowledge; all
the same, they significantly influenced visitor behavior intentions. Overall, visitor behavior intentions revealed a considerable
potential of financing environmental protection and providing voluntary work in the frame of the environmental management
of the Dadia Forest Reserve. 相似文献
952.
城市生物多样性问题及保护对策探讨 总被引:5,自引:0,他引:5
结合秦皇岛市的实际,对城市生物多样性现状和特点、生物多样性保护存在的问题进行了讨论,并提出了城市生物多样性保护的对策。 相似文献
953.
本文通过对临潼区自然生态环境和资源利用现状进行评价,提出该区生态农业的发展模式及生态农业建设主要任务,以达到持续、高效、合理地利用区内各种资源。 相似文献
954.
石油烃类污染物在地下水中自然衰减特性 总被引:14,自引:0,他引:14
污染物在地下水中的自然衰减是目前解决地下水污染问题的一个重要的研究领域,是地下水污染生物修复的基础课题,本文以地下水中的常见污染物石油烃为对象,着重阐述该物在地下水中的自然衰减特性。根据所获取的国内外资料,介绍了其自然衰减的三种动力学方程:Monod动力学方程,一级衰减动力学方程和瞬时反应动力学方程,并且对于石油烃的自然衰减速率进行了详细的描述,为以后的研究提供参考。 相似文献
955.
David Mouillot Alexis Titeux Christophe Migon Valérie Sandroni Jean-Pierre Frodello Denise Viale 《Environmental Modeling and Assessment》2000,5(4):185-192
The lagoon of Biguglia (northeastern Corsica) is one of a number Nature Reserve. Anthropogenic activities are increasing over its watershed however. The present study aims to examine the state of health of the lagoon with the example of two pollutants (Cd and Cu). Water samples were collected in spring and summer 1997. The trace metal fluxes between the various compartments were measured. Transfer processes from the watershed to the lagoon were also examined. The temporal evolution of Cd and Cu content is assessed on the one hand by comparing the present data with former reference work (1992). On the other hand, a 5-box model is implemented in order to reduce the complex functioning of the lagoon to a system of differential equations. With the help of a numerical resolution method, the increase of metallic concentration levels is estimated since 1992. On the basis of 1997 data, two hypotheses are compared. The hypothesis that takes into account a growing increase of anthropogenic activities on the watershed gives, by extrapolation, results that are closer to field measurements. However, even with this hypothesis, the cadmium content in the lagoon is underestimated. This may signify that for this metal the evolution of the lagoon pollution is more important than a linear increase. 相似文献
956.
We develop a reserve design strategy to maximize the probability of species persistence predicted by a stochastic, individual-based,
metapopulation model. Because the population model does not fit exact optimization procedures, our strategy involves deriving
promising solutions from theory, obtaining promising solutions from a simulation optimization heuristic, and determining the
best of the promising solutions using a multiple-comparison statistical test. We use the strategy to address a problem of
allocating limited resources to new and existing reserves. The best reserve design depends on emigration, dispersal mortality,
and probabilities of movement between reserves. When movement probabilities are symmetric, the best design is to expand a
subset of reserves to equal size to exhaust the habitat budget. When movement probabilities are not symmetric, the best design
does not expand reserves to equal size and is strongly affected by movement probabilities and emigration rates. We use commercial
simulation software to obtain our results. 相似文献
957.
Water is a resource that is essential for all life on Earth. An exponentially growing human population, in addition to unprecedented
industrial and technological development, threaten the availability and quality of this resource. Climate change and ozone
depletion are two major environmental problems facing mankind today. These problems have the potential to further strain currently
available freshwater resources. Recent research has shown that climate change and ozone depletion are linked phenomena and
their interaction exacerbates their impact. Changes in precipitation, surface runoff, solar UV radiation, temperatures, and
evaporation are some of the predicted outcomes of climate change and ozone depletion. They influence the biogeochemical cycles
and aquatic ecosystems in lakes and rivers, and alter the character of natural organic matter (NOM) and, consequently, they
have the potential to affect the quality, quantity and treatability of our water resources. Given these uncertainties, and
the need to mitigate the consequences of climate change and ozone depletion, the issues of changing water quality, quantity
and treatability cannot be ignored by Australian governments and water utilities. 相似文献
958.
Policy-makers and public participation analysts face the question of who should be involved in environmental decision-making. Participants are often representatives of organized groups who share similar demographic and other characteristics. This raises concerns about the degree to which the interests and opinions of others are represented. The research presented here investigates the nature and degree of differences in environmental attitudes, specifically those toward water resource management efforts, among people who do and do not participate in place-based groups in metropolitan Portland, Oregon. Neighborhood associations and a watershed council were the focus of this research due to their involvement in land-use planning and resource activities. Thirty-four individual attitudinal judgments were evaluated, along with four indices representing attitudes toward resource protection goals, government, regulations, and economic measures. Survey findings revealed watershed council participants were more supportive of resource protection compared to others on all attitudinal dimensions except anthropocentric goals. In contrast, neighborhood association participants are relatively representative of non-participants except for heightened support for economic strategies. Participants in both groups exhibited higher socioeconomic status than non-participants. Written survey comments highlighted the perceived value of on-the-ground projects incorporating local input and feedback while interviews provided insights on how to expand participation in place-based groups and resource protection efforts. 相似文献
959.
Protected Turkish areas in the Mediterranean region are compared with those of other Mediterranean countries. Policies followed
in Turkey for conservation protection of the natural and cultural environment and the use of coastal resources for tourism
are discussed. The purpose and application of Turkish law is examined with respect to the interaction between the protection
of coastal areas and tourism. Modifications on the administrative and management regulations in Turkey enabling a better use
of coastal areas is suggested by combining coastal tourism and protection. The necessity and importance of estabilishing and
managing Marine Parks in short-and long-term plans are acknowledged. 相似文献
960.