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Satellite-based analysis and monitoring of agro-ecosystems and land degradation and desertification in Central Asia

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Title Satellite-based analysis and monitoring of agro-ecosystems and land degradation and desertification in Central Asia
 
Creator Biradar, Chandrashekhar
 
Subject agroecosystem
 
Description The Central Asia includes six countries (Kazakstan, Uzbekistan, Kyrgystan, Tajistan,
Afganistan, Turkmenistan). Grassland degradation and desertification in the Central Asia has
been accelerated over the past few decades due to increasing livestock grazing intensity and
climate variability (Berger et al. 2013; Chuluun and Ojima 2002; von Wehrden et al. 2010). To
restore, maintain, and enhance grassland condition and productivity in the Central Asia is the
goal of many research and development projects in the region. However, these efforts have been
hampered by the lack of (1) updated and accurate information on grassland dynamics,
conditions, and productivity; and (2) the capacity to generate such information in timely manner.
Satellite remote sensing has been playing an increasing role in characterization and
monitoring of grassland condition and productivity (Kariyeva and van Leeuwen 2011; Li and
Yang 2014; Sternberg et al. 2011). Most previous studies have used Normalized Difference
Vegetation Index (NDVI) data from optical images to evaluate grassland condition and
productivity in the context of land degradation and desertification (Emerson et al. 2010;
Sternberg et al. 2011; Wang et al. 2014). Recently, a few studies in North American grasslands
and Mongolia grasslands show that Enhanced Vegetation Index (EVI) and Land Surface Water
Index (LSWI) are better indicators of grassland condition and productivity (John et al. 2013;
Wagle et al. 2014; Wang et al. 2010b).
Here we reported preliminary results from a pilot project that evaluated satellite-based
three vegetation indices (NDVI, EVI and LSWI) and land surface temperature (LST) for
characterization and monitoring of grassland degradation and desertification in the Central Asia.
It used MODIS data from 2000-2013 at selected areas (H22V04, H23V04). If proved to be
useful, we will incorporate it into our satellite-based monitoring program and implement it for
regional mapping and monitoring of grassland degradation and desertification in the Central
Asia.
 
Date 2016-02-01T21:26:46Z
2016-02-01T21:26:46Z
 
Type Report
 
Identifier https://mel.cgiar.org/dspace/limited
Chandrashekhar Biradar. (1/1/2015). Satellite-based analysis and monitoring of agro-ecosystems and land degradation and desertification in Central Asia.
https://hdl.handle.net/20.500.11766/3234
Timeless limited access
 
Language en
 
Format PDF