نتایج جستجو برای: land useland cover lulc

تعداد نتایج: 210293  

2017
Joanna M Tucker Lima Amy Vittor Sami Rifai Denis Valle

Considerable interest in the relationship between biodiversity and disease has recently captured the attention of the research community, with important public policy implications. In particular, malaria in the Amazon region is often cited as an example of how forest conservation can improve public health outcomes. However, despite a growing body of literature and an increased understanding of ...

Journal: :ISPRS Int. J. Geo-Information 2015
Helen Dorn Tobias Törnros Alexander Zipf

Volunteered Geographic Information (VGI) such as data derived from the OpenStreetMap (OSM) project is a popular data source for freely available geographic data. Normally, untrained contributors gather these data. This fact is frequently a cause of concern regarding the quality and usability of such data. In this study, the quality of OSM land use and land cover (LULC) data is investigated for ...

Journal: :Remote Sensing 2013
Yingchun Fu Xueyu Lu Yaolong Zhao Xiantie Zeng Lili Xia

Net primary productivity (NPP) can indicate vegetation ecosystem services ability and reflect variation response to climate change and human activities. This study applied MODIS-1 km NPP products to investigate the NPP variation from 2001 to 2006, a fast urban expansion and adjustment period in Guangzhou, China, and quantify the impacts of weather and land use/land cover (LULC) changes, respect...

2011
M. L. Clark

We present a method to map annual landuse/land-cover (LULC) change using low-cost and consistent data from the MODIS satellite and Google Earth reference data. Our LULC maps cover Latin America and the Caribbean from years 2001 to 2009, have a 250-m pixel size, and include eight general classes. Maps were produced within 27 separate zonal biomes using the Random Forests classifier. We found tha...

2013
Md Azlin Md Said Mandana Abedini Fauziah Ahmad

Providing accurate land use/ land cover (LULC), as an important component in remote sensing, have been a point of concern which subjected to many studies. Researchers have made great efforts in developing superior classification approaches and techniques which can lead to classification accurateness. This study was sought to investiagte LULC over Ulu Kinta Catchment in multispectral Landsat TM ...

2005
Brian D. Wardlow Stephen L. Egbert

Improved and up-to-date land use/land cover (LULC) datasets are needed for intensively cropped regions such as the U.S. Central Great Plains, in order to support a variety of science and policy applications focused on understanding the role and response of the agricultural sector to environmental change issues. The Moderate Resolution Imaging Spectroradiometer (MODIS) holds considerable promise...

Journal: :International Journal of Health Geographics 2008
Benjamin G Jacob Ephantus J Muturi Erick X Caamano James T Gunter Enoch Mpanga Robert Ayine Joseph Okelloonen Jack Pen-Mogi Nyeko Josephat I Shililu John I Githure James L Regens Robert J Novak Ibulaimu Kakoma

BACKGROUND The aim of this study was to determine if remotely sensed data and Digital Elevation Model (DEM) can test relationships between Culex quinquefasciatus and Anopheles gambiae s.l. larval habitats and environmental parameters within Internally Displaced People (IDP) campgrounds in Gulu, Uganda. A total of 65 georeferenced aquatic habitats in various IDP camps were studied to compare the...

2014

The InVEST hydrologic models were designed to represent the dominant processes of sediment/nutrient delivery and retention by land use/ land cover (LULC). Since they are not standard rainfall-runoff models, classical calibration and testing methods are not always applicable. Testing and calibration were particularly difficult in our study region due to: i) the absence of local data (e.g. in-str...

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...

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