نتایج جستجو برای: deforestation and desertification
تعداد نتایج: 16827997 فیلتر نتایج به سال:
Desertification is recognized as a serious environmental threat in Iran because of its climatic-geomorphologicconditions. Desertification and land degradation in arid, semi-arid, and dry sub-humid regions, is a globalenvironmental problem. Accurate assessment of the status and trend of desertification is instrumental in developingglobal strategies to prevent and reverse this problem. The goal o...
Every year, due to population growth and economy development, land uses and land covers are changing. The various types of land uses have significant roles on components of water balance of a watershed. The simulation modeling has the capability to predict floods, to evaluate land use impacts on floods, and to make decision in watershed management. In this research, the effects of land use chan...
In recent years, the topic of desertification has been discussed in different ways in scientific areas. This event occurred globally, regionally and nationally and many steps were taken to stop it. Desertification is challenged universally and its destructive effects are unavoidable and its consequences do endanger the life of inhabitants. The identification of sensitive regions and prevention ...
Desertification is one of the major issues threatening human communities. Manymethods have been developed for assessment and mapping of desertification hazards. In thisresearch, multi-criteria evaluation method was used to investigate desertification process inTrouti watershed, Golestan Province, Iran. At the first step, major desertification factors weredetermined by doing field surveys. They ...
Concerns about global warming, degradation of fragile ecosystems, and environmental and societal collapse have increased interest for lessons and/or solutions for today's environmental issues. Popular writers have turned to a classic degradation thesis of deforestation and presumed desertification within the Eastern Mediterranean as a cautionary tale of how past societies have committed ecologi...
Above 80 percent of Iran is currently located in arid and semi-arid to dry and sub-humid climates and they have sensitive conditions given the climatic conditions and natural characteristics of these regions and improper utilization methods, hence they are potentially and actually subject to the phenomenon of desertification. In this research, the sensitivity of the lands of Masjedsoleiman Area...
desertification is one of the major issues threatening human communities. manymethods have been developed for assessment and mapping of desertification hazards. in thisresearch, multi-criteria evaluation method was used to investigate desertification process introuti watershed, golestan province, iran. at the first step, major desertification factors weredetermined by doing field surveys. they ...
Over many decades our understanding of the impacts of intermittent drought in water-limited environments like the West African Sahel has been influenced by a narrative of overgrazing and human-induced desertification. The desertification narrative has persisted in both scientific and popular conception, such that recent regional-scale recovery ("regreening") and local success stories (community...
In the past decade international and national environmental policy and action have been dominated by issues generally defined as global environmental problems. In this article, we identify the major discourses associated with four global environmental issues: deforestation, desertification, biodiversity use and climate change. These discourses are analysed in terms of their messages, narrative ...
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