Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1371/journal.pone.0151395 |
Assessing Seasonal and Inter-Annual Variations of Lake Surface Areas in Mongolia during 2000-2011 Using Minimum Composite MODIS NDVI | |
Kang, Sinkyu1; Hong, Suk Young2 | |
通讯作者 | Kang, Sinkyu |
来源期刊 | PLOS ONE
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ISSN | 1932-6203 |
出版年 | 2016 |
卷号 | 11期号:3 |
英文摘要 | A minimum composite method was applied to produce a 15-day interval normalized difference vegetation index (NDVI) dataset from Moderate Resolution Imaging Spectroradiometer (MODIS) daily 250 m reflectance in the red and near-infrared bands. This dataset was applied to determine lake surface areas in Mongolia. A total of 73 lakes greater than 6.25 km(2)in area were selected, and 28 of these lakes were used to evaluate detection errors. The minimum composite NDVI showed a better detection performance on lake water pixels than did the official MODIS 16-day 250 m NDVI based on a maximum composite method. The overall lake area detection performance based on the 15-day minimum composite NDVI showed -2.5% error relative to the Landsat-derived lake area for the 28 evaluated lakes. The errors increased with increases in the perimeter-to-area ratio but decreased with lake size over 10 km(2). The lake area decreased by -9.3% at an annual rate of -53.7 km(2) yr(-1) during 2000 to 2011 for the 73 lakes. However, considerable spatial variations, such as slight-to-moderate lake area reductions in semi-arid regions and rapid lake area reductions in arid regions, were also detected. This study demonstrated applicability of MODIS 250 m reflectance data for biweekly monitoring of lake area change and diagnosed considerable lake area reduction and its spatial variability in arid and semi-arid regions of Mongolia. Future studies are required for explaining reasons of lake area changes and their spatial variability. |
类型 | Article |
语种 | 英语 |
国家 | South Korea |
收录类别 | SCI-E |
WOS记录号 | WOS:000372701200052 |
WOS关键词 | WATER INDEX NDWI ; LANDSAT TM ; CLASSIFICATION ; IMAGES ; THRESHOLD ; DISASTER |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/195605 |
作者单位 | 1.Kangwon Natl Univ, Dept Environm Sci, Chunchon 200701, South Korea; 2.Natl Acad Agr Sci, Agr Environm Dept, Wonju 565851, South Korea |
推荐引用方式 GB/T 7714 | Kang, Sinkyu,Hong, Suk Young. Assessing Seasonal and Inter-Annual Variations of Lake Surface Areas in Mongolia during 2000-2011 Using Minimum Composite MODIS NDVI[J],2016,11(3). |
APA | Kang, Sinkyu,&Hong, Suk Young.(2016).Assessing Seasonal and Inter-Annual Variations of Lake Surface Areas in Mongolia during 2000-2011 Using Minimum Composite MODIS NDVI.PLOS ONE,11(3). |
MLA | Kang, Sinkyu,et al."Assessing Seasonal and Inter-Annual Variations of Lake Surface Areas in Mongolia during 2000-2011 Using Minimum Composite MODIS NDVI".PLOS ONE 11.3(2016). |
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