Horqin District is a district of the city of Tongliao, Inner Mongolia, People's Republic of China. The local Mongolian dialect is Khorchin Mongolian. Wikipedia

Landscape fragmentation and sandy desertification

Horqin District is a district of the city of Tongliao, Inner Mongolia, People’s Republic of China. The local Mongolian dialect is Khorchin Mongolian. Wikipedia

 

Correlation between landscape fragmentation and sandy desertification: a case study in Horqin Sandy Land, China

Environ Monit Assess 2016 Jan 29;188(1):62. Epub 2015 Dec 29.
The exact roles of landscape fragmentation on sandy desertification are still not fully understood, especially with the impact of different land use types in spatial dimension. Taking patch size and shape into consideration, this paper selected the Ratio of Patch Size and the Fractal Dimension Index to establish a model that reveals the association between the area of bare sand land and the fragmentation of different land use types adjacent to bare sand land.
Results indicated that
(1) grass land and arable land contributed the most to landscape fragmentation processes in the regions adjacent to bare sand land during the period 1980 to 2010. Grass land occupied 54 % of the region adjacent to bare sand land in 1980.
The Ratio of Patch Size of grass land decreased from 1980 to 2000 and increased after 2000. The Fractal Dimension Index of grass increased during the period 1980 to 1990 and decreased after 1990. Arable land expanded significantly during this period.
The Ratio of Patch Size of arable land increased from 1980 to 1990 and decreased since 1990. The Fractal Dimension Index of arable land increased from 1990 to 2000 and decreased after 2000.
(2) The Ratio of Patch Size and the Fractal Dimension Index were significantly related to the area of bare sand land. The role of landscape fragmentation was not linear to sandy desertification. There were both positive and negative effects of landscape fragmentation on sandy desertification.
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Published by

Willem Van Cotthem

Honorary Professor of Botany, University of Ghent (Belgium). Scientific Consultant for Desertification and Sustainable Development.