نتایج جستجو برای: land cover

تعداد نتایج: 210213  

Journal: :Medical and veterinary entomology 2008
G Cecchi R C Mattioli J Slingenbergh S de la Rocque

This study aims to provide trypanosomiasis-affected countries with standardized datasets and methodologies for mapping the habitat of the tsetse fly (Glossina spp., the disease vector) by customizing and integrating state-of-the-art land cover maps on different spatial scales. Using a combination of inductive and deductive approaches, land cover and fly distribution maps are analysed in a geogr...

Journal: :Remote Sensing 2011
Kyle A. Hartfield Katheryn I. Landau Willem J. D. van Leeuwen

Remotely sensed multi-spectral and -spatial data facilitates the study of mosquito-borne disease vectors and their response to land use and cover composition in the urban environment. In this study we assess the feasibility of integrating remotely sensed multispectral reflectance data and LiDAR (Light Detection and Ranging)-derived height information to improve land use and land cover classific...

Journal: :محیط زیست طبیعی 0
جلیل ایمانی هرسینی کارشناس ارشد رشتة محیط زیست، دانشکدة منابع طبیعی، دانشگاه تهران محمد کابلی دانشیار گروه محیط زیست، دانشکدة منابع طبیعی، دانشگاه تهران جهانگیر فقهی دانشیار گروه جنگلداری و اقتصاد جنگل، دانشکدة منابع طبیعی، دانشگاه تهران علی طاهرزاده کارشناس ارشد سنجش از دور سازمان فضایی ایران عاطفه اسدی کارشناس ارشد رشته مهندسی منابع طبیعی ـ محیط زیست گرایش زیستگاه ها و تنوع زیستی، دانشکده محیط زیست و انرژی، دانشگاه آزاد اسلامی واحد علوم تحقیقات تهران

during the time, land cover and as a result land use patterns go through fundamental changes and human factors can have the most important role in this process. knowing these changes could be of great help to the future management of this region. according to this, the main purpose of this study is to monitor the land use-cover changes in the hamedan province area during the three recent decade...

2006
KIRSTEN L. FINDELL ELENA SHEVLIAKOVA P. C. D. MILLY RONALD J. STOUFFER

Equilibrium experiments with the Geophysical Fluid Dynamics Laboratory’s climate model are used to investigate the impact of anthropogenic land cover change on climate. Regions of altered land cover include large portions of Europe, India, eastern China, and the eastern United States. Smaller areas of change are present in various tropical regions. This study focuses on the impacts of biophysic...

Journal: :International Journal of Remote Sensing 2018

2012
Manibhushan Nilanchal Patel Gadadhar Sahoo

An artificial neural network is a system based on the operation of biological neural networks, in other words, is an emulation of biological neural system. Artificial Neural Networks or simply Neural Networks are powerful general purpose computing tools. They have become popular in the analysis of remotely sensed data, particularly in classification or feature extraction from image data more ac...

Journal: :Conservation biology : the journal of the Society for Conservation Biology 2017
A Justin Nowakowski James I Watling Steven M Whitfield Brian D Todd David J Kurz Maureen A Donnelly

Land-cover and climate change are both expected to alter species distributions and contribute to future biodiversity loss. However, the combined effects of land-cover and climate change on assemblages, especially at the landscape scale, remain understudied. Lowland tropical amphibians may be particularly susceptible to changes in land cover and climate warming because many species have narrow t...

2007
W. E. Riebsame W. J. Parton K. A. Galvin I. C. Burke

ocal and regional land-use and land-cover change is an important ingredient in the larger problem of global environmental change. Land-use patterns, driven by a variety of social processes, result in land-cover changes that affect biodiversity, water and radiation budgets, trace-gas emissions, and other factors that, cumulatively, alter the global climate and biosphere. Most research on global ...

Journal: :Remote Sensing 2016
Juan Carlos Laso Bayas Linda M. See Steffen Fritz Tobias Sturn Christoph Perger Martina Dürauer Mathias Karner Inian Moorthy Dmitry Schepaschenko Dahlia Domian Ian McCallum

Citizens are increasingly becoming involved in data collection, whether for scientific purposes, to carry out micro-tasks, or as part of a gamified, competitive application. In some cases, volunteered data collection overlaps with that of mapping agencies, e.g., the citizen-based mapping of features in OpenStreetMap. LUCAS (Land Use Cover Area frame Sample) is one source of authoritative in-sit...

2008
T. Quaife S. Quegan M. Disney P. Lewis M. Lomas F. I. Woodward

[1] Large-scale bottom-up estimates of terrestrial carbon fluxes, whether based on models or inventory, are highly dependent on the assumed land cover. Most current land cover and land cover change maps are based on satellite data and are likely to be so for the foreseeable future. However, these maps show large differences, both at the class level and when transformed into Plant Functional Typ...

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