Monitoring and Mapping of Soil Salinity on the Exposed Seabed of the Aral Sea, Central Asia
文献类型：期刊论文
| 作者 | Duan, Zihao1,2; Wang, Xiaolei1; Sun, Lin1 |
| 刊名 | WATER
 |
| 出版日期 | 2022-05-01 |
| 卷号 | 14期号:9页码:13 |
| 关键词 | salinization salinity indices remote sensing exposed seafloor lake |
| DOI | 10.3390/w14091438 |
| 通讯作者 | Wang, Xiaolei(wangxl.11b@igsnrr.ac.cn) |
| 英文摘要 | The incredible drying of the Aral Sea has resulted in a large area of exposed seafloor with saline soils, which has led to catastrophic consequences. This study investigated ground-truth soil salinity data and used Landsat data to map the soil salinity distribution of the exposed seabed of the Aral Sea from 1960 onwards. The soil salinity distribution, with the depth from 0 cm to 100 cm, was analyzed. The correlation analysis was applied to find the best performance index in describing soil salinity changes. The results showed that ground-truth data of topsoil salinity (depth of 0-5 cm) exhibited a significantly strong correlation with soil salinity index 4 (SI4) among seven indices, where the Pearson correlation coefficient (r) was up to 0.92. Based on the relationship between soil salinity sampling data and SI4, a linear regression model was employed to determine the capability of evaluating the soil salinity distribution of the Aral Sea with the coefficient of determination (R-2), root mean squared error (RMSE), and ratio of performance to deviation (RPD) values of 0.84 and 0.86 dS m(-1) and 2.36, respectively. The SI4 performed well and was used to predict the soil salinity distribution on the exposed seabed. The distribution showed that soil salinity increased from the former to current shoreline. In the North Aral Sea, compared to 1986, the water area remained stable, accounting for 50.3% in 2020, and the soil salinization level was relatively low. However, the moderately and slightly saline areas dominated 73.8% and 7.5% of the South Aral Sea in 2020, with an increase of 53% and 6% transformed from the water area. The area of salinized soils dramatically increased. The strongly and extremely saline areas were mainly located in the northeastern part of the eastern basin and western part of Vozrozhdeniya Island, respectively, and were the main source of salt-dust storms. These results support the dynamic monitoring and distribution patterns of soil salinization in the Aral Sea. |
| WOS关键词 | LAND ; PREDICTION ; MODEL ; WATER |
| 资助项目 | Strategic Priority Research Program of the Chinese Academy of Sciences[XDA20060301] ; National Natural Science Foundation of China[42171032] |
| WOS研究方向 | Environmental Sciences & Ecology ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:000799305800001 |
| 出版者 | MDPI |
| 资助机构 | Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/177572]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Wang, Xiaolei |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Duan, Zihao,Wang, Xiaolei,Sun, Lin. Monitoring and Mapping of Soil Salinity on the Exposed Seabed of the Aral Sea, Central Asia[J]. WATER,2022,14(9):13. |
| APA | Duan, Zihao,Wang, Xiaolei,&Sun, Lin.(2022).Monitoring and Mapping of Soil Salinity on the Exposed Seabed of the Aral Sea, Central Asia.WATER,14(9),13. |
| MLA | Duan, Zihao,et al."Monitoring and Mapping of Soil Salinity on the Exposed Seabed of the Aral Sea, Central Asia".WATER 14.9(2022):13. |
入库方式： OAI收割
来源：地理科学与资源研究所
浏览0
下载0
收藏0
其他版本
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。