نتایج جستجو برای: urban agriculture ecological word model

تعداد نتایج: 2461670  

2011
Victor Tamba Jiangfeng Li

This study investigated land use changes, and their ecological effects in Wuhan (1987-2005). Remote Sensing techniques extracted land use data, whilst the spatial analyst software, Fragstats quantified ecological metrics at both landscape and class levels. The results showed increased urban and agricultural land uses (1987-2005); with urban land increasing more than 250 percent. This was largel...

2016
Rui Zhou Hao Zhang Xin-Yue Ye Xin-Jun Wang Hai-Long Su

Over the past decades, urban growth boundaries (UGBs) have been regarded as effective tools applied by planners and local governments to curb urban sprawl and guide urban smart growth. The UGBs help limit urban development to suitable areas and protect surrounding agricultural and ecological landscapes. At present, China’s Town and Country Planning Act officially requires the delimitation of UG...

2005
AARON A. MOORE MARGARET A. PALMER

The urbanization of agricultural lands is currently one of the dominant patterns of land use change in developed countries. In the United States and parts of Europe, this has led to the implementation of agricultural land preservation programs and riparian protection and replanting efforts along urban streams. The ecological benefits of such programs for the conservation of freshwater biodivers...

Journal: :پژوهشهای جغرافیای انسانی 0
مهدی قرخلو دانشیار دانشکده‎ی جغرافیا، دانشگاه تهران حسین حاتمی نژاد استادیار دانشکده‎ی جغرافیا، دانشگاه تهران اکبر باغوند استادیار دانشکده‎ی محیط زیست، دانشگاه تهران مصطفی یلوه دانشجوی دکترای جغرافیا و برنامه‎ریزی شهری، دانشگاه تهران

extended abstract introduction the present paper examines the ecological footprint of kermanshah as the 9th largest city of iran. it also tries to answer the following question: dose the ecological environment of kermanshah support the basic needs of it's population? and are the biological systems of kermanshah able to answer all socio- economic questions related to different activities o...

2008
Mark Z. Jacobson

[1] This paper discusses the short-term effects of irrigation and albedo differences due to agriculture on California and Los Angeles air pollution and climate. High-resolution irrigation, land use, soil, albedo, and emission data were applied at the subgrid scale in the nested global-through-urban GATOR-GCMOM model to examine these issues following a comparison of baseline model results with d...

2015
Adriana De Palma Michael Kuhlmann Stuart P M Roberts Simon G Potts Luca Börger Lawrence N Hudson Igor Lysenko Tim Newbold Andy Purvis

Bees are a functionally important and economically valuable group, but are threatened by land-use conversion and intensification. Such pressures are not expected to affect all species identically; rather, they are likely to be mediated by the species' ecological traits.Understanding which types of species are most vulnerable under which land uses is an important step towards effective conservat...

2008
Karin Ahrné Karin Boye

Today almost all ecosystems on Earth are directly or indirectly influenced by human activity. Most species occur in ecosystems that are managed by humans and only a small fraction of biodiversity exists in protected areas. Therefore, human dominated areas must also be considered for conservation of biodiversity. I have studied the effect of urbanization and green area management on bumble bees,...

2010
David Satterthwaite Gordon McGranahan Cecilia Tacoli

This paper discusses the influences on food and farming of an increasingly urbanized world and a declining ratio of food producers to food consumers. Urbanization has been underpinned by the rapid growth in the world economy and in the proportion of gross world product and of workers in industrial and service enterprises. Globally, agriculture has met the demands from this rapidly growing urban...

Journal: :Public health 2015
T Angotti

Proponents of urban agriculture have identified its potential to improve health and the environment but in New York City and other densely developed and populated urban areas, it faces huge challenges because of the shortage of space, cost of land, and the lack of contemporary local food production. However, large portions of the city and metropolitan region do have open land and a history of a...

2012
Linli Zhou Liangtu Song Chengjun Xie Jie Zhang

It is a trend to use information technology to lead the development of modern agriculture. The IntelliSense Internet of Things will be an important support for intensive, high-yield, high-quality, efficient, ecological security agriculture. In this paper, we give solutions and key technologies of facilities agriculture based on the Internet of Things technology. On this basis it designs and imp...

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