[1]ZHANG Jie,QIN Fucang.Spatial Distribution Pattern and Driving Mechanism of Desertification Land in Alxa Zuoqi from 2009 to 2017[J].Research of Soil and Water Conservation,2020,27(06):174-179.
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Spatial Distribution Pattern and Driving Mechanism of Desertification Land in Alxa Zuoqi from 2009 to 2017
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
27
Number of periods:
2020 06
Page number:
174-179
Column:
目次
Public date:
2020-10-20
- Title:
- Spatial Distribution Pattern and Driving Mechanism of Desertification Land in Alxa Zuoqi from 2009 to 2017
- CLC:
- P941.73
- DOI:
- -
- Abstract:
- In order to find out the change trend of desertification land in time and space in Alxa Left Banner, MODIS image data from 2009, 2013 and 2017 were selected as data sources. With the support of ENVI and ArcGIS software, the spatial distribution of desertification land in Alxa Zuoqi was analyzed and researched. The results showed that:(1)during 2009—2017, the land as a whole developed in a good direction; during the study period, the degree of desertification had been mainly deserted and severely desertification, which accounted for more than 95% of the total desertification land area; the proportion of severe desertification was the largest, and reached up to 60%;(2)during the period from 2009 to 2017, desertification lands were mainly transformed from severe desertification to severe desertification, severe desertification to moderate desertification, and moderate desertification to mild desertification; until 2017, the areas of desertification and moderate desertification also increased correspondingly;(3)the center of gravity of severe desertification land shifted 0.08° northward from 2009 to 2013, shifted 24.53 km northeast overall, shifted 0.08° northward from 2013 to 2017, and turned back to the northwest as a whole; after 25.46 km, the change of severe desertification was most obvious. From north to south, the center of gravity of desertification land was severe desertification, severe desertification, moderate desertification, and mild desertification. In the process of desertification control and prevention, the measures should be adopted to effectively control desertification according to local conditions and rationally use land.
- References:
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Last Update:
2020-10-20