نتایج جستجو برای: human induced deforestation
تعداد نتایج: 2436176 فیلتر نتایج به سال:
Desertification of the arid and semi-arid lands of the world has been proceeding for more than a thousand years.Human-induced degradation in these areas is regularly cited as one of the principal causes of desertification.Euphrates and Tigris Basin as the case study of this research in some aspects is almost unique in the world. But thisbasin has been confronted to progressive desertification. ...
The Zagros forests (west of Iran) have been highly exploited in recent decades by human impacts. Easy access, abundance and variety of valuable forest yields have led to population growth density, creation of new residential areas and deforestation activities. In order to determinate the distribution and rate of deforestation from 1995 to 2006 by using the satellite imagery (IRS-1C and LANDSAT...
For decades, the dynamics of tropical deforestation in sub-Saharan Africa (SSA) have defied easy explanation. The rates of deforestation have been lower than elsewhere in the tropics, and the driving forces evident in other places, government new land settlement schemes and industrialized agriculture, have largely been absent in SSA. The context and causes for African deforestation become clear...
desertification of the arid and semi-arid lands of the world has been proceeding for more than a thousand years.human-induced degradation in these areas is regularly cited as one of the principal causes of desertification.euphrates and tigris basin as the case study of this research in some aspects is almost unique in the world. but thisbasin has been confronted to progressive desertification. ...
Deforestation ranks at the top in the global environmental agenda. Its importance is prompted by economic and ecological roles played by the forests and the notable adverse effects caused by deforestation on human and other species. These effects include biodiversity loss, greenhouse gas emissions, disruption of water cycles, increasing soil erosion and disruption of livelihoods. Deforestation ...
Forest degradation in the Brazilian Amazon due to selective logging and forest fires may greatly increase the human footprint beyond outright deforestation. We demonstrate a method to quantify annual deforestation and degradation simultaneously across the entire region for the years 2000–2010 using high-resolution Landsat satellite imagery. Combining spectral mixture analysis, normalized differ...
The consequences of deforestation for aboveground biodiversity have been a scientific and political concern for decades. In contrast, despite being a dominant component of biodiversity that is essential to the functioning of ecosystems, the responses of belowground biodiversity to forest removal have received less attention. Single-site studies suggest that soil microbes can be highly responsiv...
Rapid deforestation and unprecedented wildlife trafficking are important factors triggering the rate of zoonotic spillover from animals to humans. Consequently, this leads emergence re-emergence infectious diseases among human population. Deforestation is an ecological disruption that loss biodiversity. The biodiversity results in persistence highest-quality hosts pathogens dominating low-diver...
Article history: Received 16 November 2015 Received in revised form 26 June 2016 Accepted 11 July 2016 Available online xxxx Deforestation is amajor threat to global aquatic biodiversity and ecosystem services. Regional studies are needed to understand and mitigate impacts of deforestation on local inland waters, yet such studies remain unavailable inmany regions of the world where the risks of...
Article history: Received 23 August 2006 Received in revised form 7 November 2006 Accepted 18 November 2006 Deforestation often has been studied in terms of land-use models, in which natural processes such as ecological succession, physical disturbance and human decision-making are combined. In many land-use models, landowners are assumed to make decisions that maximize their utilities. However...
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