https://scholars.lib.ntu.edu.tw/handle/123456789/598630
標題: | Using Landsat 8 imagery for remote monitoring of total phosphorus as a water quality parameter of irrigation ponds in Taiwan | 作者: | Su P.-W Lo S.-L. SHANG-LIEN LO |
關鍵字: | ACOLITE;Forward selection;Land cover;Multiple regression;Remote sensing;Water quality;irrigation system;Landsat;multiple mating;multiple regression;pond;remote sensing;satellite imagery;water quality;Taiwan;Taoyuan [Taiwan];Varanidae;phosphorus;environmental monitoring;Environmental Monitoring;Phosphorus;Ponds;Satellite Imagery;Water Quality | 公開日期: | 2021 | 卷: | 28 | 期: | 47 | 起(迄)頁: | 66687-66694 | 來源出版物: | Environmental Science and Pollution Research | 摘要: | Monitoring water body quality parameters with high spatial and temporal resolutions is crucial because mitigation of pollution is usually costlier than early prevention/intervention. The existing monitoring methods for irrigation ponds in Taoyuan, Taiwan, are based on field measurements that have low spatial and temporal resolutions. In this study, using Landsat 8 satellite imagery, a multiple regression-derived relationship between the satellite band reflectance and the concentration of total phosphorus (TP) was established. The satellite imagery was atmospherically corrected with ACOLITE based on shortwave infrared (SWIR) bands. This method was used to select predictor variables in the multiple regression–derived equation based on forward selection of variables using a p value and variation inflation factor (VIF) threshold. The derived equation yielded a coefficient of determination (R2) of 0.67. The near-infrared band (band 5) was found to be most significant. The Landsat 8 imagery retrieved for two of the three pond studies included only a few pixels from the ponds because parts of the pond surfaces are covered by floating photovoltaic power plants. The TP concentrations resulting from the derived equation indicate the feasibility of using satellite remote sensing methods to monitor the water quality. The derived relationships are potentially applicable to extend the availability of temporal and spatial water quality data for these irrigation ponds. ? 2021, The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85109359640&doi=10.1007%2fs11356-021-15159-9&partnerID=40&md5=5a60075b5fb2570f127458ab6f4a5fd7 https://scholars.lib.ntu.edu.tw/handle/123456789/598630 |
ISSN: | 09441344 | DOI: | 10.1007/s11356-021-15159-9 |
顯示於: | 環境工程學研究所 |
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