نتایج جستجو برای: land useland cover change lulc

تعداد نتایج: 774574  

Journal: :Environmental Modelling and Software 2016
Varun Rao Mallampalli Georgia Mavrommati Jonathan R. Thompson Matthew Duveneck Spencer Meyer Arika Ligmann-Zielinska Caroline Gottschalk Druschke Kristen Hychka Melissa A. Kenney Kasper Kok Mark E. Borsuk

In the land use and land cover (LULC) literature, narrative scenarios are qualitative descriptions of plausible futures associated with a combination of socio-economic, policy, technological, and climate changes. LULC models are then often used to translate these narrative descriptions into quantitative characterizations of possible future societal and ecological impacts and conditions. To resp...

Journal: :Ambio 2005
J Christopher Brown Matthew Koeppe Benjamin Coles Kevin P Price

The recent rise in Brazilian soybean production has generated concern among the environmental community and some authors that natural tropical environments of the Amazon Basin are being converted to soybean fields. Proponents of soybean production counter that soybeans represent a viable agricultural commodity for the region; environmental concern is unwarranted, because new soybean fields are ...

The term urban heat island (UHI), described the phenomenon of climate change in urban areas compared with surrounding rural areas. UHI effects include: increasing in energy and water consumption, air pollution expansion and interfering in thermal comfort. Surface urban heat island (SUHI) contains patterns of land surface temperature (LST) in urban areas that has interaction with UHI in urban ca...

2015
Sadroddin Alavipanah Martin Wegmann Salman Qureshi Qihao Weng Thomas Koellner Marc A. Rosen

The Urban Heat Island (UHI) is the phenomenon of altered increased temperatures in urban areas compared to their rural surroundings. UHIs grow and intensify under extreme hot periods, such as during heat waves, which can affect human health and also increase the demand for energy for cooling. This study applies remote sensing and land use/land cover (LULC) data to assess the cooling effect of v...

Journal: :ISPRS Int. J. Geo-Information 2015
Yasmine Megahed Pedro Cabral Joel Silva Mario Caetano

This study modeled the urban growth in the Greater Cairo Region (GCR), one of the fastest growing mega cities in the world, using remote sensing data and ancillary data. Three land use land cover (LULC) maps (1984, 2003 and 2014) were produced from satellite images by using Support Vector Machines (SVM). Then, land cover changes were detected by applying a high level mapping technique that comb...

Journal: :Computers & Geosciences 2008
Ruili Lang Guofan Shao Bryan C. Pijanowski Richard L. Farnsworth

The quality of remotely sensed land use and land cover (LULC) maps is affected by the accuracy of image data classifications. Various efforts have been made in advancing supervised or unsupervised classification methods to increase the repeatability and accuracy of LULC mapping. This study incorporates a data-assisted labeling approach (DALA) into the unsupervised classification of remotely sen...

Journal: :Remote Sensing 2011
L. Monika Moskal Diane M. Styers Meghan Halabisky

Urban forest ecosystems provide a range of social and ecological services, but due to the heterogeneity of these canopies their spatial extent is difficult to quantify and monitor. Traditional per-pixel classification methods have been used to map urban canopies, however, such techniques are not generally appropriate for assessing these highly variable landscapes. Landsat imagery has historical...

2014
Lutz Ehlkes Anne Caroline Krefis Benno Kreuels Ralf Krumkamp Ohene Adjei Matilda Ayim-Akonor Robin Kobbe Andreas Hahn Christof Vinnemeier Wibke Loag Udo Schickhoff Jürgen May

BACKGROUND Malaria is a mosquito-borne parasitic disease that causes severe mortality and morbidity, particularly in Sub-Saharan Africa. As the vectors predominantly bite between dusk and dawn, risk of infection is determined by the abundance of P. falciparum infected mosquitoes in the surroundings of the households. Remote sensing is commonly employed to detect associations between land use/la...

2012
Jinliang Huang Pei Zhou Zengrong Zhou Yaling Huang

Land use and land cover (LULC) information is an important component influencing watershed modeling with regards to hydrology and water quality in the river basin. In this study, the sensitivity of the Soil and Water Assessment Tool (SWAT) model to LULC datasets with three points in time and three levels of detail was assessed in a coastal subtropical watershed located in Southeast China. The r...

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