نتایج جستجو برای: four dimensions of land cover

تعداد نتایج: 21216114  

2009
Daniel Ayalew Mengistu DANIEL AYALEW MENGISTU

Remote sensing and gis-based Land use and land cover change detection in the upper Dijo river catchment, Silte zone, southern Ethiopia Working papers on population and land use change in central Ethiopia, nr. 17 ABSTRACT Land use and land cover (LULC) change is one of the challenges which strongly influence the process of agricultural development and the food security situation in Ethiopia in g...

Fresh water supply and its security encounter a high level of fluctuating variability under global climate changes. To address these concerns in catchment water management, a good understanding of land use/cover impacts on the hydrological cycle affecting water supply is crucial. The objective of this study is to define a model to investigate the impact of existing land use/cover on water yield...

Aims and Background: The present study purpose to investigate and predict the changes of metrics and Landscape change processes in the Gorganrood watershed in Golestan province.  Methodology: First, land cover maps were prepared in 1990, 2000, 2010 and 2020. Then predict land cover changes for future conditions, under two scenarios (1) continuation of the current trend of change for 2040 and (...

Journal: :International journal of environmental research and public health 2015
Jian Gong Jianxin Yang Wenwu Tang

Land use and land cover change is driven by multiple influential factors from environmental and social dimensions in a land system. Land use practices of human decision-makers modify the landscape of the land system, possibly leading to landscape fragmentation, biodiversity loss, or environmental pollution-severe environmental or ecological impacts. While landscape-level ecological risk assessm...

ژورنال: علوم آب و خاک 2009
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: :محیط زیست طبیعی 0
بیت الله محمودی دانشجوی دکتری جنگلداری و اقتصاد جنگل دانشکدۀ منابع طبیعی دانشگاه تهران محمدرضا مروی مهاجر مروی مهاجر عضو هیئت علمی دانشکدۀ منابع طبیعی دانشگاه تهران افشین دانه کار عضو هیئت علمی دانشکدۀ منابع طبیعی دانشگاه تهران جهانگیر فقهی عضو هیئت علمی دانشکدۀ منابع طبیعی دانشگاه تهران

this study was done to investigation forest cover changes in the mazandaran province in topographic zones. for doing that in the first matched topographic zones and land-use map. after that distribution of forest cover was investigated in plain, lowland, middle land and high land. forest cover changes analyzed in a period of 132 years since the beginning of the destructive activities in the for...

2007
Alexis Comber

This paper is concerned with data and classifications that confuse the concepts of land cover and land use. Conceptual confusion is problematic for data integration and modelling. This has resulted in calls for the separation of land use and land cover from the global land monitoring community. Text mining approaches are combined with social network analyses as a method for unravelling the diff...

Journal: :Remote Sensing 2023

Multispectral images accessible free of charge have increased significantly from the acquisitions by wide-field-of-view (WFV) sensors onboard Gaofen-1/-6 (GF-1/-6), Operational Land Imager (OLI) Landsat 8 (L8), and Multi-Spectral Instrument (MSI) Sentinel-2 (S2). These with medium spatial resolutions are beneficial for land-cover mapping to monitor local global surface dynamics. Comparative ana...

Journal: :desert 2008
a. r. keshtkar h. r. keshtkar

land degradation is a major danger which restricting different areas of iran. systematic description of the environmentfor detection of environmental changes and the human-related causes and responses is essential in land cover changestudy. use of land cover data allow detection of where certain changes occur, what type of change, as well as how theland is changing. existing systems for classif...

Journal: :Remote Sensing 2016
Vladimir R. Wingate Stuart R. Phinn Nikolaus Kuhn Lena Bloemertz Kiran L. Dhanjal-Adams

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...

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