Xem 1-19 trên 19 kết quả Urban ecology
  • Urban Ecology is the study of ecosystems that include humans living in cities and urbanizing landscapes. It is an emerging, interdisciplinary field that aims to understand how human and ecological processes can coexist in human-dominated systems and help societies with their efforts to become more sustainable. It has deep roots in many disciplines including sociology, geography, urban planning, landscape architecture, engineering, economics, anthropology, climatology, public health, and ecology.

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  • Urban ecology in Berlin has been developing over the past 350 years, from garden floras and wild floras of castles and ruins to the Graduate Research Training Group 780 “Perspectives in Urban Ecology”. This program has brought together universities and scientific institutes from all over Berlin. Since the beginning, urban ecology in Berlin has included approaches from biology and geography, leading to the current interdisciplinary work documented in this summarizing publication.

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  • Natural and social scientists face a great challenge in the coming decades: to understand the role that humans play in ecosystems, particularly urban ecosystems. Cities and urbanizing regions are complex coupled humannatural systems in which people are the dominant agents. As humans transform natural landscapes into highly human-dominated environments, they create a new set of ecological conditions by changing ecosystem processes and dynamics.

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  • Tham khảo sách 'ecological engineering principles and practice', khoa học tự nhiên, công nghệ sinh học phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

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  • In the course of researching and writing this book, I have been blessed with abundant help. Arthur McEvoy has been a personal and scholarly model for more than a decade, and it is to him that I owe the greatest thanks for anything that is creative in this project. Whenever recommending one of his favorite books or his foolproof model for writing, he often promised me, “This will change your life.” My studies with him did.

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  • With a vision and a strategy the 21st century city will be green, a healthy place for all and will generate zero net pollution. This book offers a vision and a strategy. Productive urban landscapes have two huge challenges to address: CO2 emissions are projected to increase by two-thirds in the next 20 years, and as the global food production increases so does the number of people going hungry, with the number of urban hungry soaring. The symbiotic relationship between a productive landscape and the human settlement system is as old as civilization.

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  • Environmental pollution has played a critical role in human lives since the early history of the nomadic tribes. During the last millennium, industrial revolution, increased population growth and urbanization have been the major determinants in shaping our environmental quality. Initially primary air pollutants such as sulfur dioxide and particulate matter were of concern. For example, the killer fog of London in 1952 resulted in significant numbers of human fatality leading to major air pollution control measures....

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  • Technological advances in cases are included in the equipment around us every day, our life is safer, hand in hand with economic advantage and ecology. This book collects original research related to composite materials, their properties and tested from different perspectives. Programs are divided into five groups according to their main purpose: the material properties, natural resources, manufacturing, Experimental and model.

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  • Sewage sludge as an uncalled for product of wastewater treatment poses the challenge to society of disposing of it, but at the same time gives us the opportunity of beneficial use by closing the cycle of nutrients: sludge derived from agricultural activity must return to soil if a sustainable and ecologically sound management of these materials is desirable (SEQUI et al. 2000). At present the major ways of disposing of sewage sludges are deposition, landfill and incineration, only part of the sludges are used in agriculture. ...

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  • The current problem with the human system of resource use and residual disposal is that it is wildly out of equilibrium. Competition among humans is such that we slaughter thousands of our own species annually on the roads in our haste to get somewhere faster; we let millions of babies die every year for want of clean water and a modest diet; we deliberately kill more millions of people in war, often to secure access to dwindling resources. In the last fifty years we have become more aware that our patho- logical drive for 'more' has poisoned the land, the water and the air.

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  • The ecosystem accounting framework presented here is being tested in the context of an open Europe taking stock of its relations to the rest of the world. Because ecosystem accounts are deep-rooted into monitoring databases, implementation presently focuses on physical accounts. Monetary valuations, the adjustment of national accounts aggregates for income and final consumption, and the calculation of ecological debts, are foreseen in subsequent steps within the same logical framework.

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  • We do not always need science to teach us what happens on landscapes, though science enriches that story. All who have had to cope in the world knew this, natives of landscapes wherever. Science brings insight into continu- ing organic, ecological, and evolutionary unity, dynamic genesis; but such unity may also have already been realized by pre-scientific peoples in their inhabiting of a landscape. Science can engage us with landscapes too object- ively, academically, disinterestedly; landscapes are also known in participant encounter, by being embodied in them. ...

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  • When we eventually look back at the intellectual shibboleths of the high capitalist period—say the last three centuries—few ingrained assumptions will look so wrongheaded or so globally destructive as the common-sense separation of society and nature. Historically and geographically, most societies have avoided such a stark presumption as hubristic folly, but from physicists to sociologists, physicians to poets, the brains of the ascendant capitalist “west” not only embraced but made a virtue of society’s separation from nature (and vice versa).

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  • The steady increase in industrialization, urbanization and enormous population growth are leading to production of huge quantities of wastewaters that may frequently cause environmental hazards. Raw or treated waste water is very oft en discharged to freshwaters and results in changing ecological performance and biological diversity of these systems. About 70% of water supplied ends up as wastewater and several natural water reservoirs are being contaminated by untreated sewage/industrial effl uents. This makes waste water treatment and waste water reduction very important issues....

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  • Mining wastes can cause significant ecological destruction. Often, solid mine wastes are dumped into streams, destroying habitat and causing siltation and heavy metal and other contamination. Even when such wastes are stored out of water channels, trace materials can leach into surface waters and infiltrate into local groundwater. Fine- grained tailings can wash into local waterways and degrade streams by covering and filling coarser-grained substrates.

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  • The long-term good health of populations depends on the continued stability and functioning of the biosphere’s ecological and physical systems, often referred to as life-support systems. We ignore this long-established historical truth at our peril: yet it is all too easy to overlook this dependency, particularly at a time when the human species is becoming increasingly urbanized and distanced from these natural systems.

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  • Over half of the world’s poor live in rural areas. Although urban poverty is rising, the correlation between poverty and remoteness from urban centres is strong in most countries and is expected to remain so in the foreseeable future. As compared with their urban counterparts, rural people are often isolated from economic opportunities and have less access to basic social services. Resource degradation is an acute problem in rural areas, with some 60% of the world’s poorest people living in ecologically vulnerable areas (Angelsen, 1997).

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  • Volunteers Are a Valuable Financial Resource. A volunteer’s time is an important resource for many charities and congregations, especially those that do not have the money to hire labor to carry out certain tasks. Volunteer time is comparable to a monetary donation. Independent Sector, a national advocate for the nonprofit sector, computes annually an equivalent average hourly wage for a volunteer’s time. The calculation is derived from the average hourly wage of nonagricultural workers plus 12 percent for fringe benefits. By this calculation, the typical 2002 volunteer value was $16.

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  • Technology, engineering and medicine have inter- vened in the way we manage water and wetlands to successfully improve aspects of and foster human health. Over the same period, increasing human populations and increasing rates of consumption by humans, alterations to land use and land cover and the practices of irrigation, all associated with agri- culture, urban expansion, and global environmental change, have collectively and substantially adversely modified wetland systems, in terms of both water quality and water quantity.

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