نتایج جستجو برای: range land

تعداد نتایج: 776847  

Journal: :Science 2009
J E Campbell D B Lobell C B Field

The quantity of land available to grow biofuel crops without affecting food prices or greenhouse gas (GHG) emissions from land conversion is limited. Therefore, bioenergy should maximize land-use efficiency when addressing transportation and climate change goals. Biomass could power either internal combustion or electric vehicles, but the relative land-use efficiency of these two energy pathway...

Journal: :The Science of the total environment 2008
Andrew B Cundy Laurence Hopkinson Raymond L D Whitby

Reactions involving iron play a major role in the environmental cycling of a wide range of important organic, inorganic and radioactive contaminants. Consequently, a range of environmental clean-up technologies have been proposed or developed which utilise iron chemistry to remediate contaminated land and surface and subsurface waters, e.g. the use of injected zero zero-valent iron nanoparticle...

2008
Gregory P Asner

Conversion of land to grow crops, raise animals, obtain timber, and build cities is one of the foundations of human civilization. While land use provides these essential ecosystem goods, it alters a range of other ecosystem functions, such as the provisioning of freshwater, regulation of climate and biogeochemical cycles, and maintenance of soil fertility. It also alters habitat for biological ...

Journal: :Remote Sensing 2009
Charles Ndegwa Mundia Yuji Murayama

Changes in wildlife conservation areas have serious implications for ecological systems and the distribution of wildlife species. Using the Masai Mara ecosystem as an example, we analyzed long-term land use/cover changes and wildlife population dynamics. Multitemporal satellite images, together with physical and social economic data were employed in a post classification analysis with GIS to an...

2017
Zea Walton Gustaf Samelius Morten Odden Tomas Willebrand

Home range size is a fundamental concept for understanding animal dispersion and ecological needs, and it is one of the most commonly reported ecological attributes of free-ranging mammals. Previous studies indicate that red foxes Vulpes vulpes display great variability in home range size. Yet, there has been little consensus regarding the reasons why home range sizes of red foxes vary so exten...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید باهنر کرمان - پژوهشکده علوم زمین 1391

چکیده به منظور مطالعه مرز سنومانین-تورونین در زون های زمین ساختی ایران مرکزی و کپه داغ سه برش چینه شناسی در این نواحی انتخاب و از آنها نمونه برداری به عمل آمد. در ناحیه ایران مرکزی برش کلاه قاضی و در ناحیه کپه داغ برش های گردنه مزدوران و طاهرآباد ترک انتخاب گردیده اند. مطالعات زیست چینه نگاری بر روی فرامینیفرهای موجود نشان می دهد که برش های ناحیه کپه داغ در بر گیرنده سازندهای آیتامیر و آب در...

2015
Chris Mills Bessie Ayres Joanna Scurr

The buoyant forces of water during aquatic exercise may provide a form of 'natural' breast support and help to minimise breast motion and alleviate exercise induced breast pain. Six larger-breasted females performed standing vertical land and water-based jumps, whilst wearing three breast support conditions. Underwater video cameras recorded the motion of the trunk and right breast. Trunk and r...

2010
B. Yatsalo P. Bardos

The general questions of decision-making support on Risk Based Land Management O^BLM), including key factors and components, range of existing decision support and analytical tools and techniques are considered. The characteristics and possibilities of the applied Decision Support System PRANA as a tool for decision support on RBLM and sustainable rehabilitation of radioactive contaminated terr...

2016
Marc Edelman Ruth Hall Ian Scoones Ben White Wendy Wolford

Political reactions 'from below' to global land grabbing have been vastly more varied and complex than is usually assumed. This essay introduces a collection of groundbreaking studies that discuss responses that range from various types of organized and everyday resistance to demands for incorporation or for better terms of incorporation into land deals. Initiatives 'from below' in response to ...

2007
A. Tanskanen

At ultraviolet wavelengths the albedo of most natural surfaces is small with the striking exception of snow and ice. Therefore, snow cover is a major challenge for various applications based on radiative transfer modelling. The aim of this work was to determine the characteristic effective UV range surface albedo of various land cover types when covered by snow. First we selected 1 by 1 degree ...

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