Arid
DOI10.3390/su9040581
Correlation between Desertification and Environmental Variables Using Remote Sensing Techniques in Hogno Khaan, Mongolia
Lamchin, Munkhnasan1; Lee, Woo-Kyun1; Jeon, Seong Woo1; Lee, Jong-Yeol1; Song, Cholho1; Piao, Dongfan1; Lim, Chul Hee1; Khaulenbek, Akhmadi2; Navaandorj, Itgelt2
通讯作者Jeon, Seong Woo
来源期刊SUSTAINABILITY
EISSN2071-1050
出版年2017
卷号9期号:4
英文摘要

In this paper, we used Landsat thematic mapper (TM) and enhanced thematic mapper (ETM) data from 1990, 2002, and 2011 to analyze the spatial and temporal patterns of desertification using seven factors; the normalized difference vegetation index (NDVI), the topsoil grain size index (TGSI), land surface albedo, the topographic wetness index (TWI), land surface temperature (LST), the perpendicular drought index (PDI), and the elevation of Hogno Khaan, which lies in a semiarid region of central Mongolia. We normalized the indicators, determined their weights, and defined five levels of desertification; none, low, medium, high, and severe. Sets of rules were constructed, and a multi-criteria evaluation (MCE) approach was used to assess desertification and test the correlations between the seven variables in comparison to the different levels of desertification, with field and reference data used for accuracy. We provide a review of the literature on MCE applied to desertification assessment issues based on satellite data. At the first step, major desertification factors were computed for satellite data. The next step was the construction of pairwise comparison matrix. Then, the weight of each factor was determined by the contribution of an analytical hierarchy process. Finally, the susceptible areas to desertification in the study area were identified using a multi-criteria evaluation method. We found that more than 15% of the total land area in Hogno Khaan suffered from severe desertification in 2011, increasing from 7% in 1990. Our analysis showed that the highest correlations were between TGSI and albedo, PDI and TGSI, and PDI and albedo at all levels of desertification. LST was less strongly correlated with TGSI, albedo, and PDI. The correlation of TWI with PDI and NDVI in the non-and low desertification areas produced R values of 0.15 and 0.58, respectively. The correlation analysis indicated a significant positive correlation between TWI and both NDVI and PDI for all years in non-and low desertification areas. Comparing elevation and NDVI, the highest correlation was found for severe desertification in 2002, although correlations for severe desertification were lower in 1990 and 2011.


英文关键词desertification land degradation assessment vegetation correlation drought topsoil grain size index wetness topographic index
类型Article
语种英语
国家South Korea ; Mongolia
收录类别SCI-E ; SSCI
WOS记录号WOS:000402090300104
WOS关键词INDUCED LAND DEGRADATION ; GRASSLAND DESERTIFICATION ; AEOLIAN DESERTIFICATION ; SURFACE-TEMPERATURE ; VEGETATION DYNAMICS ; CLIMATE ; NDVI ; PRECIPITATION ; PREDICTION ; RAINFALL
WOS类目Green & Sustainable Science & Technology ; Environmental Sciences ; Environmental Studies
WOS研究方向Science & Technology - Other Topics ; Environmental Sciences & Ecology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/202582
作者单位1.Korea Univ, Dept Environm Sci & Ecol Engn, Seoul 02841, South Korea;
2.Mongolian Acad Sci, Inst Geog & Geoecol, Desertificat Res Ctr, Baruun Selbe 15,4th Khoroo, Ulaanbaatar 15170, Mongolia
推荐引用方式
GB/T 7714
Lamchin, Munkhnasan,Lee, Woo-Kyun,Jeon, Seong Woo,et al. Correlation between Desertification and Environmental Variables Using Remote Sensing Techniques in Hogno Khaan, Mongolia[J],2017,9(4).
APA Lamchin, Munkhnasan.,Lee, Woo-Kyun.,Jeon, Seong Woo.,Lee, Jong-Yeol.,Song, Cholho.,...&Navaandorj, Itgelt.(2017).Correlation between Desertification and Environmental Variables Using Remote Sensing Techniques in Hogno Khaan, Mongolia.SUSTAINABILITY,9(4).
MLA Lamchin, Munkhnasan,et al."Correlation between Desertification and Environmental Variables Using Remote Sensing Techniques in Hogno Khaan, Mongolia".SUSTAINABILITY 9.4(2017).
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