نتایج جستجو برای: four dimensions of land cover

تعداد نتایج: 21216114  

2016
Vladimir R. Wingate Stuart R. Phinn Nikolaus Kuhn Lena Bloemertz Kiran L. Dhanjal-Adams Parth Sarathi Roy Clement Atzberger Prasad S. Thenkabail

Woodlands and savannahs provide essential ecosystem functions and services to communities. On the African continent, they are widely utilized and converted to subsistence and intensive agriculture or urbanized. This study investigates changes in land cover over four administrative regions of North Eastern Namibia within the Kalahari woodland savannah biome, covering a total of 107,994 km2. Land...

2005
Kathleen M. Bergen Daniel G. Brown James F. Rutherford Eric J. Gustafson

A ca. 1980 national-scale land-cover classification based on aerial photo interpretation was combined with 2000 AVHRR satellite imagery to derive land cover and land-cover change information for forest, urban, and agriculture categories over a seven-state region in the U.S. To derive useful land-cover change data using a heterogeneous dataset and to validate our results, we a) stratified the cl...

Dust events of Iran mainly originate from Iraq, Syria, Saudi Arabia, Kuwait and inland territories which are influenced by droughts and Land Use/Land Cover (LU/LC) degradation in regional scale. The aim of this research was to investigate the impact of Regional Vegetation Cover Degradation (RVCD), particularly Regional Rangeland Cover Degradation (RRCD) on frequency of dusty days in western pro...

2011
Catherine Linard Marius Gilbert Andrew J. Tatem

Gridded population distribution data are finding increasing use in a wide range of fields, including resource allocation, disease burden estimation and climate change impact assessment. Land cover information can be used in combination with detailed settlement extents to redistribute aggregated census counts to improve the accuracy of national-scale gridded population data. In East Africa, such...

Predicting the impact of land cover and climate change on hydrologic responses using modeling tools are essential in understanding the movement and pattern of hydrologic processes within the watershed. The paper provided potential implications of land conversions and climate change scenarios on the hydrologic processes of Muleta watershed using soil and water assessment tool model. Model inputs...

جلالیان, احمد, خادمی, حسین, مومنی, مسعود, کلباسی, محمود,

The forms and dynamics of soil phosphorus can be greatly affected by land use changes, which often involve changes in vegetation cover, biomass production and nutrient cycling in the ecosystem. Present research evaluates the impact of land use change on the amount of total organic and inorganic P, labile, moderately labile and nonlabile P pools in semiarid soils of central Zagros. Samples were ...

Journal: :Remote Sensing 2017
Darius Phiri Justin Morgenroth

Land cover classification of Landsat images is one of the most important applications developed from Earth observation satellites. The last four decades were marked by different developments in land cover classification methods of Landsat images. This paper reviews the developments in land cover classification methods for Landsat images from the 1970s to date and highlights key ways to optimize...

2017
Chaltu Taffa Teferi Mekonen Messay Mulugeta Bechaye Tesfaye

The data presented in this paper shows the spatiotemporal expansion of Dire Dawa City (eastern Ethiopia) and the ensuing land use land cover changes in its peri-urban areas between 1985 and 2015. The data were generated from satellite images of Thematic Mapper (TM), Enhanced Thematic Mapper-Plus (ETM+) and OLI (Operational Land Image) with path/raw value of 166/053 by using Arc GIS 10.1 softwar...

Journal: :مدیریت آب و آبیاری 0
الهام شفیعیون دانشجوی سابق کارشناس ارشد گروه مهندسی آب، دانشکدة کشاورزی، دانشگاه صنعتی اصفهان، اصفهان – ایران مهدی قیصری استادیار گروه مهندسی آب، دانشکدة کشاورزی، دانشگاه صنعتی اصفهان، اصفهان – ایران محمد مهدی مجیدی دانشیار گروه اصلاح نباتات، دانشکدة کشاورزی، دانشگاه صنعتی اصفهان، اصفهان – ایران جهانگیر عابدی کوپایی استاد گروه مهندسی آب، دانشکدة کشاورزی، دانشگاه صنعتی اصفهان، اصفهان – ایران سید فرهاد موسوی استاد بازنشستة گروه مهندسی آب، دانشکدة کشاورزی، دانشگاه صنعتی اصفهان، اصفهان – ایران سعید اسلامیان دانشگاه صنعتی اصفهان – دانشکده کشاورزی – گروه مهندسی آب- دانشیار

vegetation cover on a variety of different land uses in different parts of a city creates different forms of heat flow that this, in turn, generates the main framework of urban microclimate. the objective of this study is to survey the effect of land cover type on air temperature in the isfahan city. to do this, five regions in the isfahan city with different land cover type were selected. in e...

Investigation about the influence of land-cover and land use changes on soil erodibility potential, case study: Gharesou, Gorganrood Land use and land cover (LUC) change associated with climatic and geomorphologic conditions of the area have an accelerating impact on the land degradation. Natural as well as human-induced land use land cover change (LUCC) has significant impacts on regional soi...

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