Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.3390/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
![]() |
EISSN | 2071-1050 |
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). |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。