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Search Results: 1 - 10 of 7482 matches for " Ecological Protection "
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Weighing the Pros and Cons: Transformation of Angle of View for Three Gorges Dam  [PDF]
Wei Zhang
Natural Resources (NR) , 2014, DOI: 10.4236/nr.2014.516088
Abstract: Three Gorges Dam Project is the world’s largest water-control and hydraulic-electric project in the 21st century. However, it has been shrouded in controversy since long even before it began construction in 1994. On one hand, the benefits of the Three Gorges Dam are flood control, power generation, navigation, aquaculture, tourism, ecological protection, environmental purification, development-oriented resettlement, transfer of water from southern China to northern China, and water supply and irrigation. On the other hand, the drawbacks of the dam are environmental impact, effect on local culture and aesthetic values, and sedimentation. In an environmental impact point of view, the Three Gorges Dam shows evidence that it has more advantages than disadvantages. Thus, by carefully balancing the pros and cons, one can say that the Three Gorges Dam is an environmentally feasible project.
A profile of environmental science in China
Ma Shijun,
Ma
,Shijun

环境科学学报(英文版) , 1990,
Abstract: This paper concisely introduced the eco-environmental survey in China and the Chinese scientific programme for environmental research which is being practiced or being planned. China has established a nation-wide system relating to environmental scientific research and environmental administration and has taken the following strategies for solving the environment problems: (1) a series of laws and regulations for environmental protection has been promulgated so as to strengthen the legal administration and economic punishment. (2) the idea of ecological construction has been proposed for the purpose of taking the environmental protection work into the consideration of the national and provincial (or regional) economic construction planning. (3) spreading ecological engineering and ecological technologies have reduced the pollutant sources and have increased the industrial and agricultural economic profit.
Ecological and biogeographical consequences of the fragmentation process
?ur?i? Sne?ana
Glasnik Srpskog Geografskog Dru?tva , 2012, DOI: 10.2298/gsgd1201161d
Abstract: This paper will analyze the cause of, and ecological and biogeographical consequences of fragmentation process of habitats and ecosystems. Fragmentation process of the autochthonous habitats that without doubt leads also towards the break in their continuity shows by placement in all areas that are under the anthropogenic influence, and as well under the influence of the natural hazards. Spatial and functional isolation as the consequences of fragmentation can be overcome with the help of the formation of the ecological networks and corridors whose dynamic of management will be in accordance with the dynamic of change in habitats formed as the consequence of the fragmentation. [Projekat Ministarstva nauke Republike Srbije, br. 176008]
Protection of the lakes on mount Durmitor
Stankovi? Stevan M.
Glasnik Srpskog Geografskog Dru?tva , 2007, DOI: 10.2298/gsgd0702031s
Abstract: Mount Durmitor and the town of abljak as a unique hub of Montenegro, the first ecological state in the world, must also base their identity on the lakes in which they see their reflections multiplied as in crystal mirrors. The more thoroughly we learn about the lakes and evaluate them in a proper way, the more dazzling they appear to be. The lakes are not all that numerous. They will not be there for ever. They are evolutionary water bodies of low selfpurification potential.
A critical look at the definition of indicators to assess the effectiveness of marine protected areas A critical look at the definition of indicators to assess the effectiveness of marine protected areas
Stéphanie Pasquaud and Jérémy Lobry
Sciences Eaux & Territoires : la Revue du IRSTEA , 2011,
Abstract: Marine protected areas (MPA) have been created to protect threatened, rare species and/or preserve remarkable habitats. What are the results, have they succeeded in restoring biodiversity? Are the selected indicators suitable for the task? How can they be improved? The international community’s commitment to creating and managing a coherent network of marine protected areas (MPA) by 2012 leads us to reflect on the definition of MPA effectiveness and on how best to assess its impact through the development of appropriate indicators. This approach leads to a better understanding of the difficulties involved in developing these indicators, difficulties linked to the complexity of MPAs and the need to reach a compromise between the conservation of biodiversity, on the one hand, and socio-economic and governance-related interests, on the other.
Comparative analysis of formulation techniques for national and regional ecological networks Comparative analysis of formulation techniques for national and regional ecological networks
Jennifer Amsallem, Michel Deshayes and Marie Bonnevialle
Sciences Eaux & Territoires : la Revue du IRSTEA , 2011,
Abstract: As part of its mission to assist the Ecology ministry in setting up the National ecological network, Cemagref carried out a comparative analysis on network formulation methods to assist in the establishment of national guidelines. This article presents the salient points. The French ecological network aims to preserve and restore ecological continuities. In support of the Ecology ministry and the National ecological-network implementation committee, Cemagref coordinated the drafting of national guidelines. As part of this work, Cemagref identified significant national and regional projects and compared the methods used. Elements for a national framework and recommendations for the design and mapping of the network on the regional level were presented to the committee and, following review, were included in the national guidelines.
To Discuss the Construction of Henan Agricultural Ecological Civilization
Mingyue Zhang
Journal of Modern Agriculture , 2012,
Abstract: Henan has a population of over one hundred million people, which ranks the first in all Chinese provinces. Its total grain output accounts for one tenth of the country. As the most populous and largest agricultural province in China, research on Henan is a window for penetrating into phenomena in China. At present, Henan is in the stage of developing agricultural modernization, advancing industrialization, and urbanization at the same time. The contradiction between ecological environment and economic development has become increasingly prominent in Henan. Only with correct development orientation, integration of advantages, highlighting of characteristics, can we find a scientific way of coordinated development of agricultural modernization, industrialization and urbanization at no expense of destroying agriculture and food security, ecology and environment. In this way, we can better serve as the bibcock model in the course of accelerating the construction of economic zone of Central Plains and realize mutual benefit and win-win result.
农药氟虫腈与生态保护的研究进展
Study on Fipronil in the Ecological Protection
 [PDF]

王峰, 孟祥鹤, 王菡
Hans Journal of Agricultural Sciences (HJAS) , 2014, DOI: 10.12677/HJAS.2014.45015
Abstract:
本文综述了农药氟虫腈在环境中的应用,并结合国内外在农药降解领域的研究,对氟虫腈及其代谢产物在环境中的降解行为、氟虫腈的作用机制及其毒理学研究进展进行论述。氟虫腈在水体中以光解和水解为主,在土壤中除了光解和水解作用,还存在氧化作用。研究表明,氟虫腈及其代谢产物对非标靶类动物(蜜蜂、淡水脊椎动物、鸟类等)具有毒性,但对人类的健康影响还有待进一步研究。
This paper summarizes the fipronil application in the environment. Based on recent pesticide de-gradation research, the degradation behavior of fipronil and its metabolites in environment were discussed, and the toxicology mechanism was stated. Fipronil is given priority to photolysis and hydrolysis in water. There exist photolysis, hydrolysis and oxidation in soil. Research shows that fipronil and its metabolites to non-target species (bees, freshwater vertebrate animals, birds, etc.) are poisonous. But the impact on human health needs further research.
Integrated pest management: a global reality?
Kogan, Marcos;Bajwa, Waheed I.;
Anais da Sociedade Entomológica do Brasil , 1999, DOI: 10.1590/S0301-80591999000100001
Abstract: the expression "integrated pest management" (ipm or mip in portuguese) is completing 28 years since it first appeared in press. since then integrated pest management or integrated pest control has become the paradigm of choice for activities that aim at attenuating the impact of all pests - plant diseases, weeds, and invertebrate or vertebrate animals - in agricultural production, in human and animal health, and in urban or rural structures. despite the nearly universal acceptance of the concept, its practical application still is rather restricted, varying considerably among geopolitical regions, the nature of the crop, and, mainly, with the commitment and support of responsible governmental entities for programs dedicated to promote adoption of ipm. an objective assessment of the successful incorporation of ipm in agricultural practices is difficult because: a) lack of rigorous criteria to distinguish an ipm program from other traditional pest control activities, b) absence of a broadly based consensus on a definition of ipm, and c) paucity of reliable quantitative surveys of the agricultural area under ipm. some have used the percentage of pesticide use reduction as a measure of the success of ipm. this measure, however, in the absence of other criteria, may not be appropriate for in some parts of the world introduction of ipm may lead to an increase in pesticide use, not a reduction. in our search to assess the expansion of ipm programs in the world, we concluded that it is essential to first achieve a consensus on the criteria to measure the nature of the program. in general these criteria depend on the level of ipm integration, the nature of the pests, the value of the crop, the availability of alternative control technologies, and the associated economic, environmental, and social risks. in view of the small volume of available data and in the absence of objective measurements of performance criteria, we opted to use as title for this paper an assertion to be
The progress and prospects of nebkhas in arid areas

DU Jianhui,YAN Ping,DONG Yuxiang,

地理学报 , 2010,
Abstract: Nebkhas are often extensively distributed in arid and semi-arid areas, and play an important role in the stabilization of ecological environment in these areas. This paper reviews the following aspects, including formation and succession, spatial distribution, shape and surface airflow characteristics, balance between erosion and deposition, ecological and physiological characteristics of vegetation, response to precipitation and groundwater, soil properties as well as the protection measures. We found that nebkhas were studied without differentiation of succession periods, and shape characteristics, surface airflow, soil properties as well as vegetation dynamics in different succession periods were not fully understood, which made it difficult to explain the succession dynamics of nebkhas and its affecting factors. Previous studies of nebkhas were over-emphasized for its role as an indicator of land degradation, while its ecological functions in degraded ecosystems were neglected, which was unfavorable for the ecological restorations in arid and semi-arid areas. Future studies should pay more attention to the variation of vegetation, soil as well as hydrological process in the succession of nebkhas and its interaction between different influencing factors. In addition, positive role of nebkhas in degraded ecosystems in arid and semi-arid areas should be fully discussed. According to the data got from the above, effective protection measures of nebkhas should be explored.
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