نتایج جستجو برای: land cover

تعداد نتایج: 210213  

Journal: :Remote Sensing 2014
Marian Vittek Andreas Brink Francois Donnay Dario Simonetti Baudouin Desclée

Monitoring land cover changes from the 1970s in West Africa is important for assessing the dynamics between land cover types and understanding the anthropogenic impact during this period. Given the lack of historical land cover maps over such a large area, Landsat data is a reliable and consistent source of information on land cover dynamics from the 1970s. This study examines land cover change...

2017
Steffen Fritz Linda See Christoph Perger Ian McCallum Christian Schill Dmitry Schepaschenko Martina Duerauer Mathias Karner Christopher Dresel Juan-Carlos Laso-Bayas Myroslava Lesiv Inian Moorthy Carl F Salk Olha Danylo Tobias Sturn Franziska Albrecht Liangzhi You Florian Kraxner Michael Obersteiner

Global land cover is an essential climate variable and a key biophysical driver for earth system models. While remote sensing technology, particularly satellites, have played a key role in providing land cover datasets, large discrepancies have been noted among the available products. Global land use is typically more difficult to map and in many cases cannot be remotely sensed. In-situ or grou...

2011
Helen Briassoulis

Keywords: land-use change, land-cover change, determinants of land-use and land-cover change

2015
Hai Yan Li Dong

BACKGROUND This study investigated the microclimatic behavior of different land cover types in urban parks and, the correlation between air temperature and land cover composition to understand how land cover affects outdoor thermal environment during hot summer. METHODS To address this issue, air temperatures were measured on four different land cover types at four observation sites inside an...

2007
U. Gangkofner J. Weichselbaum C. Hoffmann O. Arino S. Kleeschulte

The CARTO-CHANGE project addresses the harmonization of existing land cover data (Advanced CORINE LC, CORINE LC and GLOBCOVER) and thereby two aspects: Firstly, the cartographic and statistical comparison of land cover information across different scales and resolutions, and secondly the timely identification of candidate land cover changes by using land cover and land use information derived f...

2004
Daniel G. Brown

Land use can be defined as the values that humans obtain from landscapes. What is it that people are actually doing on the landscape? Though remote sensing is often used for mapping land use and land cover over large areas, to actually map land use usually requires some careful human interpretation of the imagery or, better, surveying or interviewing people on the ground to identify their use o...

Journal: :International Journal of Geographical Information Science 2004
Daniel G. Brown Jiunn-Der Duh

An approach to simulating land-cover patterns based on historical land-use maps and forecasts based on models and planning documents is described and demonstrated. The approach uses stochastic spatial simulation to generate land-cover patterns on the basis of a land-use map and stated translation rules. The translation rules take the form of (1) a table that summarizes the proportions of each l...

2011
Yuechen Liu Zhiyuan Pei Quan Wu Lin Guo Hu Zhao Xiwei Chen

The paper summarized pre-existing research works relating to land use/land cover classification based on multi-resolution remote sensing data. According to the features of regions, we carried out of the land use/land cover classification of level III classes in 148 group of Xinjiang agricultural reclamation eighth division. The land use/land cover classification system divided land in study are...

Journal: :Remote Sensing 2015
Wenzhong Shi Xiaokang Zhang Ming Hao Pan Shao Liping Cai Xuzhe Lyu

Validation of land cover products is a fundamental task prior to data applications. Current validation schemes and methods are, however, suited only for assessing classification accuracy and disregard the reliability of land cover products. The reliability evaluation of land cover products should be undertaken to provide reliable land cover information. In addition, the lack of high-quality ref...

Urbanization through rapid constructions, is the main cause of high heat absorption in urban centers. In addition, the accumulation of heat energy resulted by removal of vegetation cover, has contributed to formation of urban heat islands (UHIs). The spatial distribution of heat intensity in Tehran Metropolitan Area was studied, and the influence of land use and green cover were analyzed in the...

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