نتایج جستجو برای: actual vegetation map

تعداد نتایج: 361486  

2002
Kathleen M. Bergen Daniel G. Brown Eric J. Gustafson M. Craig Dobson

Mapping for biodiversity informatics requires information on habitat so that known species occurrences may be extrapolated to maps of potential species occurrences. In the case of vegetation requirements for habitat, most current datasets of actual vegetation have been derived from optical (e.g. aerial photography or Landsat) remotely sensed data. These data are largely limited to describing ho...

2015
Bing Gao Yue Qin Yuhan Wang Dawen Yang Yuanrun Zheng James M. Vose

The Heihe River is the second largest inland basin in China; runoff in the upper reach greatly affects the socio-economic development in the downstream area. The relationship between spatial vegetation patterns and catchment hydrological processes in the upper Heihe basin has remained unclear to date. In this study, a distributed ecohydrological model is developed to simulate the hydrological p...

Gholamreza Zehtabian Hasan Ahmadi Hossein Azarnivand Saeideh Kalantari

One of the influential tools concerning the rangeland and vegetation sciences isthe technology of remote sensing and satellite data. Satellite data have played essentialroles in preparing the needed information for studying the vegetation. Vegetation has beenwidely recognized as one of the best indicators for determining the land conditions. Usingvegetation indices is one of the techniques of r...

2011
D. Lewis S. Phinn K. Pfitzner

Traditional techniques to map vegetation communities are by aerial photography interpretation and intensive field sampling. Semi-automated methods, including pixel and object-based image classification, demonstrate potential to accurately map vegetation communities, however, there is a lack of comparative research. This study is a component of a broader research project that compares several te...

More than one-third of the earth is characterized by arid and semi-arid climate and desertification phenomenon in these areas has been intensified in recent decades. This study aims to investigate the trend of desertification using vegetation indices and Iranian Model of Desertification Potential Assessment (IMDPA) in Abarkooh Plain, Yazd province, Iran. The satellite images (Landsat images in ...

Journal: رستنیها 2011
A. Alizadeh Shabani A. Danehkar Z. Asadolahi,

For studying vegetation cover in Choghakhor wetland located in Chaharmahal-o-Bakhtiari province (W Iran), some zones of vegetation life forms were determined and also digitized in order to produce the primary map of plant cover by using LISS-IV sensor of IRS satellite with the spatial resolution of 5.8 m. As aquatic plants in Choghakhor wetland were fully grown, homogeneity or heterogeneity of ...

2005
K. E. Keese B. R. Scanlon R. C. Reedy

[1] Understanding climate, vegetation, and soil controls on recharge is essential for estimating potential impacts of climate variability and land use/land cover change on recharge. Recharge controls were evaluated by simulating drainage in 5-m-thick profiles using a one-dimensional (1-D) unsaturated flow code (UNSAT-H), climate data, and vegetation and soil coverages from online sources. Soil ...

Journal: :Vegetation Classification and Survey 2021

The Global Vegetation Project (http://gveg.wyobiodiversity.org) is a new initiative to host an online database of open-access, georeferenced vegetation photos. mission the ‘to inspire and empower people all ages learn about diversity on our planet provide educators with resource for teaching ecology online’. beta release includes two R-Shiny web applications that allow users 1) submit photos pl...

2004
DANA L. PETERSON STEPHEN L. EGBERT KEVIN P. PRICE EDWARD A. MARTINKO

Statewide land-cover change detection analysis provides a useful tool for conservation planning and environmental monitoring and addresses issues of habitat fragmentation and urban sprawl. Furthermore, land-cover data offer a historical and recent perspective on landscape dynamics. To this end, the first alliance level land-cover map of Kansas (Kansas Vegetation Map) recently completed by the K...

2012
Mariela Soto-Berelov Patricia Fall Steven Falconer

We propose a revised map of plant geographical regions for the Southern Levant (most of Israel, the Palestinian Territories and Jordan). Since this region has been heavily impacted by human activity over millennia we have created a detailed natural vegetation map using GIS, remote sensing and a species distribution model (MAXENT). We created an extensive database of over 1800 historical and fie...

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