نتایج جستجو برای: deserts
تعداد نتایج: 2047 فیلتر نتایج به سال:
Geoengineering, the deliberate large-scale manipulation of earth's energy balance to counteract global warming, is an attractive proposition for sparsely populated deserts. We use the BNU and UVic Earth system models to simulate the effects of irrigating deserts under the RCP8.5 scenario. Previous studies focused on increasing desert albedo to reduce global warming; in contrast we examine how e...
Stony deserts are durable indicators of aridity but until now have not been directly dated. Using 21Ne and 10Be produced in surface rocks by cosmic rays, we show that Australian stony deserts formed 2–4 Ma, at the time when global cooling initiated the Quaternary ice ages and intensified aridity-induced major landscape changes in central Australia. This is the first direct determination of ston...
<span>To date, the study of news deserts, geographic spaces lacking local and information, has largely focused on countries in Global North, particularly United States, predominantly been interested causes consequences disappearance media outlets (e.g., newspapers TV stations) to social fabric a community. In this article, we extend concept “news deserts” by drawing literature geography A...
The US Department of Agriculture (USDA) characterizes food deserts as low-income neighborhoods that distinctly lack supermarkets and grocery stores (1). This definition elevates the importance of large food retailers where Americans spend most of their food dollars and deemphasizes the contributions of smaller food stores such as convenience and dollar stores for food choice decision making. Sm...
1. Soil Formation is a Global Natural Process 2. Factors of Soil Formation 3. Stages of Soil Formation 4. Processes of Soil Formation 5. Genesis of Soils under Different Ecologic Conditions 5.1. Genesis of Soils under Conditions of Cryogenesis 5.2. Genesis of Soils of Forest Landscapes in a Zone of Moderate Climate 5.3. Genesis of Soils in Landscapes of Steppes and Prairies 5.4. Genesis of Soil...
METHODS We use a geographic information system to measure availability and accessibility of supermarkets in four case study local government areas (LGAs). The location of supermarkets is analysed in relation to residential dwellings, car ownership and in terms of travel distance along the road network. RESULTS This methodology identifies differences in both availability and accessibility betw...
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