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Remote Sens. 2015, 7(2), 1346-1358; doi:10.3390/rs70201346

Contraction of the Gobi Desert, 2000–2012

School of Geography, University of Oxford, South Parks Road, Oxford OX1 3QY, UK
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Author to whom correspondence should be addressed.
Academic Editors: Arnon Karnieli and Prasad S. Thenkabail
Received: 5 September 2014 / Revised: 5 September 2014 / Accepted: 21 January 2015 / Published: 26 January 2015
(This article belongs to the Special Issue Remote Sensing of Land Degradation in Drylands)
View Full-Text   |   Download PDF [939 KB, uploaded 26 January 2015]   |  

Simple Summary

Gobi; desert boundary; expansion and contraction; Aridity Index; NDVI; Mongolia; China

Abstract

Deserts are critical environments because they cover 41% of the world’s land surface and are home to 2 billion residents. As highly dynamic biomes desert expansion and contraction is influenced by climate and anthropogenic factors with variability being a key part of the desertification debate across dryland regions. Evaluating a major world desert, the Gobi in East Asia, with high resolution satellite data and the meteorologically-derived Aridity Index from 2000 to 2012 identified a recent contraction of the Gobi. The fluctuation in area, primarily driven by precipitation, is at odds with numerous reports of human-induced desertification in Mongolia and China. There are striking parallels between the vagueness in defining the Gobi and the imprecision and controversy surrounding the Sahara desert’s southern boundary in the 1980s and 1990s. Improved boundary definition has implications fGobi; desert boundary; expansion and contraction; Aridity Index; NDVI; Mongolia; China or understanding desert “greening” and “browning”, human action and land use, ecological productivity and changing climate parameters in the region. The Gobi’s average area of 2.3 million km2 in the 21st century places it behind only the Sahara and Arabian deserts in size. View Full-Text
Keywords: Gobi; desert boundary; expansion and contraction; Aridity Index; NDVI; Mongolia; China Gobi; desert boundary; expansion and contraction; Aridity Index; NDVI; Mongolia; China
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Sternberg, T.; Rueff, H.; Middleton, N. Contraction of the Gobi Desert, 2000–2012. Remote Sens. 2015, 7, 1346-1358.

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