Essay On Land Cover
Land-cover is a key and effective variable in the Earth system that is related to most of the human and physical environments. Change in the situation of land-cover is an important variable among the global changes that affect environmental systems (Otukei and Blaschke 2010).
Land-cover changes play a main role in the global carbon cycle, and in the exchange of greenhouse gases between the atmosphere and the earth surface (Loveland and Belward 1997). In general, intense human activities have an increase in construction and farmland and destruction of forests, meadows and other natural resources (Lambin and Geist 2003; Lawrence et al. 2012). Agricultural lands increase the entry of nutrients into the water in the basin and in particular affect the amount of nitrogen (Robson 2014). Human activities associated with construction pollute atmosphere, water and soil (Kang et al. 2010; Li et al. 2009). Destruction of forests and meadows in addition to the loss of biodiversity causes the release of carbon into atmosphere and changes land-surface albedo, and as a result affects climate change (Foley et al. 2005; Hua and Chen 2013). Conversely,
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random forest (RF), decision tree (DT), support vector machines (SVM), and object-based support vector machines (OSVM), to classifying Landsat image 2010. Furthermore land-cover maps of 1990 to 2010 produced using multi-temporal Landsat images (TM and ETM+) and the best classifier method. For this purpose, multispectral images of the study area over a period of two decades have been chosen to indicate the changes in land-cover phenomena. Our specific objectives were to: (1) comparing pixel-based and object-based classification methods for land change detection, (2) mapping land-cover change in our study area between 1990 and 2010, from Landsat TM/ETM+ images, and (3) comparing satellite-based land-cover trends in two last decades (1990-2000 and
Persuasive Essay On No Tilling
528 Words | 3 PagesNO TILLING Would no-till farming help the ground from blowing? The answer is yes. No-till holds the soil in place by keeping the left over crops on the soil. The roots of the crops hold the topsoil in place unlike disking the soil that loosens the topsoil.
Pacific Northwest Deforestation
1693 Words | 7 PagesThe effect of reduced forest size has already had a measurable impact on the composition of our atmosphere in the relatively short amount of time we have been cutting them down(6). Ironically however it is the conversion of forest land to urban and agriculture use that has a more permanent and detrimental impact. Logging and urbanization lead to forest succession. Forest succession happens when there are changes to an environment that causes the composition of plant and animal species to change. New species succeed the existing ones as a result of things like changes in amount of shade, temperature, or the introduction of foreign species.
William Cronon Changes In The Land Summary
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Summary Of What's Eat America By Micheal Pollan
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Essay On Property Management
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Argumentative Essay On Climate Change
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Informative Essay: Natural Causes Of Global Warming
1008 Words | 5 PagesWith deforestation being one of these roles because when we chop down these trees and plants of where animals habitats our it also releases a lot of carbon dioxide into the air. And if you didn’t know forests are major carbon storage centers, when deforestation happens all the carbon dioxide that is stored in these forests; is released back into the atmosphere. Deforestation not only contributes to changes in the climate, it also causes localized changes in the weather. Trees transpire, or release water into the atmosphere, during photosynthesis. This water replenishes clouds and maintains rainfall.
Essay On Forest Management
1265 Words | 6 PagesSustainable forest management requires three major criteria which are the maintenance of ecological processes within the forest (soil formation, energy flow, biogeochemical cycles (carbon, nutrient and hydrological cycles), maintenance of biodiversity of forest, improving the net social benefits derived from the mixture of forest uses within the constraints by considering the future. Forest provides habitats for more than half of the fauna and flora on the Earth (SCBD, 2001). Forest biome plays an important role in mitigating climate change by serving as carbon sinks (Hassan et al., 2005). Forest land is the most fundamental natural resources which become reduced mainly due to anthropogenic pressures. For proper management of land, it is essential to have information about existing land cover and about the naturalness of the land.
Pollution Essay: The Effects Of Climate Change Toward The Environment
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Importance Of Food Security Essay
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Cause Of Environmental Degradation
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