Utilizing NDWI, MNDWI, SAVI, WRI, and AWEI for Estimating Erosion and Deposition in Ping River in Thailand

被引：53

作者：

Laonamsai, Jeerapong ^{[1
,2
]}

Julphunthong, Phongthorn ^{[1
,3
]}

Saprathet, Thanat ^{[4
]}

Kimmany, Bounhome ^{[5
]}

Ganchanasuragit, Tammarat ^{[6
]}

Chomcheawchan, Phornsuda ^{[1
]}

Tomun, Nattapong ^{[7
]}

机构：

[1] Naresuan Univ, Fac Engn, Dept Civil Engn, Phitsanulok 65000, Thailand

[2] Naresuan Univ, Fac Engn, Water Resources Res Ctr, Phitsanulok 65000, Thailand

[3] Naresuan Univ, Fac Sci, Res Ctr Acad Excellence Appl Phys, Phitsanulok 65000, Thailand

[4] Minist Nat Resources & Environm, Dept Water Resources, Bangkok 10400, Thailand

[5] Natl Univ Laos, Fac Water Resources, Dept Meteorol & Hydrol, Viangchan 01010, Laos

[6] Tokyo Inst Technol, Dept Sustainable Energy & Resources Engn, Tokyo 1528550, Japan

[7] Rajamangala Univ Technol Thanyaburi, Fac Ind Educ, Dept Tech Educ, Pathum Thani 12110, Thailand

来源：

HYDROLOGY | 2023年 / 10卷 / 03期

关键词：

riverbank; erosion; accretion; remote sensing; river morphology; water indices; DIFFERENCE WATER INDEX; IMPACTS; FLOOD;

D O I：

10.3390/hydrology10030070

中图分类号：

TV21 [水资源调查与水利规划];

学科分类号：

081501 ;

摘要：

The Ping River, located in northern Thailand, is facing various challenges due to the impacts of climate change, dam operations, and sand mining, leading to riverbank erosion and deposition. To monitor the riverbank erosion and accretion, this study employs remote sensing and GIS technology, utilizing five water indices: the Normalized Difference Water Index (NDWI), Modified Normalized Difference Water Index (MNDWI), Soil-Adjusted Vegetation Index (SAVI), Water Ratio Index (WRI), and Automated Water Extraction Index (AWEI). The results from each water index were comparable, with an accuracy ranging from 79.10 to 94.53 percent and analytical precision between 96.05 and 100 percent. The AWEI and WRI streams showed the highest precision out of the five indices due to their larger total surface water area. Between 2015 and 2022, the riverbank of the Ping River saw 5.18 km(2) of erosion. Conversely, the morphological analysis revealed 5.55 km(2) of accretion in low-lying river areas. The presence of riverbank stabilizing structures has resulted in accretion being greater than erosion, leading to the formation of riverbars along the Ping River. The presence of water hyacinth, narrow river width, and different water levels between the given periods may impact the accuracy of retrieved river areas.

引用

页数：25

共 65 条

[1] Meandering and bank erosion of the River Nile and its environmental impact on the area between Sohag and El-Minia, Egypt [J].