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Precipitation is one of the most important factors for growth of plants especially in arid and semi-arid regions. In this study, we show that vegetation in the arid and semi-arid Gobi region is sensitive to the dynamics of precipitation. Using satellite imagery we analyzed the space-time features of seasonal vegetation evolution and anomaly patterns from 1985 to 2013. Cross correlation analysis was...
The Inland Asian dry land, such as Gobi and desert of Mongolian Plateau is the most important dust source region in the world. However, in recent years the dust storms were found to have been outbreak from the pastureland around the dry lakes, dry river channels and degraded pasturelands. Surrounding of dry lakes, dry river channels and degraded pastures are the main new sources of Asian Dust Storms...
Earth's surface building and changing by endogenetic and exogenetic processes. Endogenous processes are large-scale landform building and transforming processes. However, The exogenetic processes are the processes that shape the land by forces coming on or above the Earth's surface (exogenetic forces), such as zoogeomorphic activity. Ecosystems in the Central Asian Plateau, which includes the Mongolian...
Global warming's influence over the last 30 years, along with soil dehydration in the Taisetsu mountains has resulted in shrubbery such as Dwarf bamboo (Dwarf bamboo kurilensis), a species of dwarf bamboo, and Japanese Stone pine (Pinus pumila) (an indicator of soil dehydration), increase in area of distribution while many herbaceous species of alpine plants have reduced in distribution area to the...
This study was performed at Abag banner in Inner Mongolia. Two Landsat TM data were acquired separately in 1989 and 2011 over the study area. Soil Adjusted Vegetation Index (SAVI) were derived from reflectance spectra, and applied to compare the green vegetation cover. The change detection result show that there is a large change in land cover, and most vegetation decreasing area was located overgrazing...
Alpine ecosystem is the most sensitive terrestrial ecosystem to global climate change. Recently, a dwarf bamboo species, Sasa kurilensis, (Poaceae), has invaded into alpine snow-meadows in the wilderness area of the Taisetsu Mountains, northern Japan. The spatial distribution and seasonal changes in soil moistures are key parameter in numerous environmental studies at both regional and global scales...
In this study a remote sensing approach for the mesquite tree (Prosopis juliflora) control is proposed. The mesquite tree is well known for its high adaptability to arid and semi-arid conditions and characterized by very high water use efficiency. Introduction of the mesquite has caused several environmental problems in Sudan. In this study, to monitor mesquite water use efficiency the concept of...
This study presents a supervised subspace learning classification method which can be applied directly to the original set of spectral bands of hyperspectral data for land cover classification purpose. The CLAss-Featuring Information Compression (CLAFIC) method is used to generate the appropriate feature subspace for each class on the training data set by Karhunen-Loève transform (also known as the...
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