A dam is a large barrier build within moving water to prevent its flow. These dams will hold back large amounts of this once freely flowing water. Dams are typically created so that the reservoirs of water formed can be used to generate electricity...
Environmental incidences of the Aswan High Dam [Ecological problems posed by the construction of large dams; fishing, agriculture, aquatic and edaphic biocoenosis; Egypt]. 来自 AGRIS 喜欢 0 阅读量: 7 作者: R Pourriot 年份: 1982 收藏 引用 批量引用 报错 分享 全部来源 求助全文 AGRIS ...
causedbydeforestation,degradedland,anddestructionofwetlands,as wellashealthandproductivitylossescausedbypollutionincities—at between5.5and9.8percentofGNP.TheChineseAcademyofSocial Science(Smil1996)similarlyestimateseconomiclossesontheorderof 8.5percentofGNP,orinexcessof$30billionannually.Otherstudies ...
2000 . Environmental aspects of large dams in India: problems of planning, implementation and monitoring. In: K. Prasad and R.S. Goel, eds. Environmental management in hydro-electric projects: proceedings of the national seminar in India , 11–12 November 1999. New Delhi: Concept Publishers, ...
Dams have been criticized for altering natural flow regimes, blocking fish passage, affecting sediment transport, and changing watershed characteristics, which collectively contribute to the degradation of water quality, fish population, and biodiversity as well as cascading social and economic problems (e...
How is nutrient pollution affecting people? Explain the benefit of microbial diversity in our environment. Describe the environmental problems caused by the widespread use of bottled water. Explore our homework questions and answers library Search Browse...
Urban regions struggle with a lot of solid waste, which is made worse by the population growth. The problems caused by soil contamination are exacerbated by residential, agricultural, and industrial sources as well as e-waste, medical waste, and radioactive waste. Numerous wastes have an effect...
when compounds are both persistant and fat soluble are cause for really serious problems in ecosystems because they are so strong and last for so long because they cannot be degraded Bioaccumulation The accumulation of a substance, such as a toxic chemical, in various tissues of a living organis...
(EC50 = 575 ± 175 REF). The YDS also shows no significant changes caused by the WWTPs. Overall, the dioxin-like activity in the lower Horloff is relatively low compared to other rivers in the Nidda catchment area [144]. The different results for the potential mixture toxicity on...
case studies – Food resources: World food problems, changes caused by agriculture and overgrazing, effects of modern agriculture, fertilizer-pesticide problems, water logging, salinity, case studies – Energy resources: Growing energ needs, renewable and non renewable energy sources, use of alternate ...