نتایج جستجو برای: lulc maps of 1989

تعداد نتایج: 21178843  

Journal: :Remote Sensing 2017
Hui Li Cuizhen Wang Cheng Zhong Zhi Zhang Qingbin Liu

Land use/land cover (LULC) change is one of the most important indicators in understanding the interactions between humans and the environment. Traditionally, when LULC maps are produced yearly, most existing remote-sensing methods have to collect ground reference data annually, as the classifiers have to be trained individually in each corresponding year. This study presented a novel strategy ...

Journal: :Remote Sensing 2016
Christoph Hütt Wolfgang Koppe Yuxin Miao Georg Bareth

When using microwave remote sensing for land use/land cover (LULC) classifications, there are a wide variety of imaging parameters to choose from, such as wavelength, imaging mode, incidence angle, spatial resolution, and coverage. There is still a need for further study of the combination, comparison, and quantification of the potential of multiple diverse radar images for LULC classifications...

2016
Wenjie Wang Chuanrong Zhang Jenica M. Allen Weidong Li Mark A. Boyer Kathleen Segerson John A. Silander

Land use and land cover (LULC) patterns play an important role in the establishment and spread of invasive plants. Understanding LULC changes is useful for early detection and management of land-use change to reduce the spread of invasive species. The primary objective of this study is to analyze and predict LULC changes in Connecticut. LULC maps for 1996, 2001 and 2006 were selected to analyze...

2014
Terry L. Sohl

Species distribution models often use climate data to assess contemporary and/or future ranges for animal or plant species. Land use and land cover (LULC) data are important predictor variables for determining species range, yet are rarely used when modeling future distributions. In this study, maximum entropy modeling was used to construct species distribution maps for 50 North American bird s...

Journal: :International Journal of Health Geographics 2006
Benjamin G Jacob Josephat Shililu Ephantus J Muturi Joseph M Mwangangi Simon M Muriu Jose Funes John Githure James L Regens Robert J Novak

BACKGROUND Continuous land cover modification is an important part of spatial epidemiology because it can help identify environmental factors and Culex mosquitoes associated with arbovirus transmission and thus guide control intervention. The aim of this study was to determine whether remotely sensed data could be used to identify rice-related Culex quinquefasciatus breeding habitats in three r...

2015
Charlotte E. L. Whitham Kun Shi Philip Riordan Gil Bohrer

Accurate and spatially-appropriate ecosystem service valuations are vital for decision-makers and land managers. Many approaches for estimating ecosystem service value (ESV) exist, but their appropriateness under specific conditions or logistical limitations is not uniform. The most accurate techniques are therefore not always adopted. Six different assessment approaches were used to estimate E...

2010
Jorge García-Gutiérrez Daniel Mateos-García José Cristóbal Riquelme Santos

Land use and land cover (LULC) maps are remote sensing products that are used to classify areas into different landscapes. The newest techniques have been applied to improve the final LULC classification and most of them are based on SVM classifiers. In this paper, a new method based on a multiple classifiers ensemble to improve LULC map accuracy is shown. The method builds a statistical raster...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه گیلان - دانشکده علوم انسانی 1391

the present study sought to investigate the impact of using mind-mapping technique instruction on female elementary efl learners reading comprehension; it also investigated their attitudes towards using mind-mapping technique as a tool to improve their reading comprehension. this study followed a quasi-experimental design with two intact groups as experimental, and control groups. the participa...

Journal: :Natural Hazards 2021

Analysis of long-term land use and cover (LULC) changes requires up-to-date remotely sensed data to assess their effects on erosion. This is a particularly important assessment for regions with semi-arid landscapes where soils tend be scarce proper management necessitates matching LULC local conditions achieve sustainable use. study evaluates the impact erosion using Landsat satellite imagery R...

2010
Jorge García-Gutiérrez Francisco Martínez-Álvarez José Cristóbal Riquelme Santos

Remote sensing based on imagery has traditionally been the main tool used to extract land uses and land cover (LULC) maps. However, more powerful tools are needed in order to fulfill organizations requirements. Thus, this work explores the joint use of orthophotography and LIDAR with the application of intelligent techniques for rapid and efficient LULC map generation. In particular, five types...

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