نتایج جستجو برای: land cover vegetation

تعداد نتایج: 243729  

2009
Chen WANG Bert TOXOPEUS

The Lagoon of Fuente de Piedra in Andalusia, Spain, is a high-value habitat for waterbirds, threatened by expansion and irrigation of olive plantation. This research focuses on detecting the response of land-cover in the lake to water level variation using multi-temporal satellite data, so as to provide information for the nature park management. Objectives of this study are to identify the lan...

2010
K. Muramatsu K. Masugi N. Soyama S. Furumi M. Daigo Nishi Machi

Vegetation species maps are useful for forestry managements and environmental ecological study. From the forestry management, broad and conifer leaf forest should be mapped. In addition to them, land-cover mapping data with high resolution is needed as validation data sets for low resolution’s land-cover mapping results. SGLI sensor on board GCOM-C satellite, which will be launched in 2014, has...

Journal: :international journal of advanced biological and biomedical research 2013
sahar delpasand maryam moradnezhadi zahra hossaini yousef askari

the preparation of vegetation cover maps by used the land inventory and a traditional method has a lot of cost and time. but today, remote sensing is one of the main sources of data collection and information production for study and monitoring land resources, and was efficient tools for providing quickly and timely data and information needs for program planning in the natural resource filed. ...

2005
Dengsheng Lu Mateus Batistella Emilio F. Moran Evaristo E. de Miranda

Landsat Thematic Mapper (TM) data have been extensively used for land cover classification, but Terra ASTER and SPOT High Resolution Geometric (HRG) data applications are just beginning. This paper compares the capabilities of TM, ASTER, and HRG in land cover classification in the Amazon basin. Maximum likelihood classification was used for selected multi-sensor image classification. This resea...

2007
Maria Zoran Sabina Stefan

Climate-induced changes at the land surface may in turn feed back on the climate itself through changes in soil moisture, vegetation, radiative characteristics, and surface-atmosphere exchanges of water vapor. Thresholding based on biophysical variables derived from time trajectories of satellite data is a new approach to classifying forest land cover via remote sensing .The input data are comp...

2011
D. Klein S. Asam U. Gessner S. Dech

Mountainous regions are especially vulnerable to climate and land use change. For a monitoring of subtle changes detailed and continuous land cover information is necessary. Therefore vegetation cover fractions are derived for the Naryn river catchment in Kyrgyzstan using a remote sensing multi-scale approach. First a very high resolution QuickBird image is classified into discrete classes usin...

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...

2017
Jicai NING Zhiqiang GAO Ran MENG Fuxiang XU Meng GAO

This study analyzed land use and land cover changes and their impact on land surface temperature using Landsat 5 Thematic Mapper and Landsat 8 Operational Land Imager and Thermal Infrared Sensor imagery of the Yellow River Delta. Six Landsat images comprising two time series were used to calculate the land surface temperature and correlated vegetation indices. The Yellow River Delta area has ex...

2016
Kim André Vanselow Cyrus Samimi Siegmar-W. Breckle Stefan Lötters

We edited, redrew, and evaluated four unpublished historical vegetation maps of the Western Pamirs (Tajikistan) by the Soviet geobotanist Okmir E. Agakhanjanz. These maps cover an area of 5,188 km2 and date from 1958 to 1960. The purpose of this article is to make the historic vegetation data available to the scientific community and thus preserve a hitherto non available and up to now neglecte...

Journal: :Environmental monitoring and assessment 2009
Ashraf M Dewan Yasushi Yamaguchi

This paper illustrates the result of land use/cover change in Dhaka Metropolitan of Bangladesh using topographic maps and multi-temporal remotely sensed data from 1960 to 2005. The Maximum likelihood supervised classification technique was used to extract information from satellite data, and post-classification change detection method was employed to detect and monitor land use/cover change. De...

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