Eutrophic water information extraction based on modified augmented normalized difference water index
增强归一化差异水体指数(augmented normalized difference water index, ANDWI)是一种新颖、稳健的水体指数,但在某些情况下ANDWI可能对表面聚集型水华的水体提取效果较差;因此,本文依据水体指数ANDWI的特点及富营养化水体指数(improved eutrophic water body index, MEWI)的构建思路,基于富营养化水体等地物的光谱特性,构造了修正的增强归一化差异水体指数(modified augmented normalized difference water index, MANDWI)。本文以不同季节、不同水华等级的太湖进行水体提取验证,将MANDWI与双红外水体指数(double infrared band water index, DIBWI)、MEWI、多波段组合水体指数(multi-band combination water index, MBCWI)和ANDWI进行对比,结果表明MANDWI适用于不同季节且具有较好的水体提取效果,随着水华等级提升,MADNWI仍具有较高的水体提取精度(总体精度为0.99,Kappa系数为0.98),而其他水体指数的提取效果较差。MANDWI的提出增强了遥感水体提取能力,对于水资源管理和保护具有重要意义,同时也为类似水体指数的构建提供参考。
Authors
- Hao Song (ORCID: https://orcid.org/0000-0002-4739-1753)
- Huang Zuoji
- Zi Yang (ORCID: https://orcid.org/0000-0003-0707-2544)
- Xin Pan (ORCID: https://orcid.org/0000-0002-0093-5143)
- Yingbao Yang (ORCID: https://orcid.org/0000-0002-3092-5683)
- Chunlin Wang (ORCID: https://orcid.org/0000-0001-9093-7101)
- Wenying Xie (ORCID: https://orcid.org/0009-0004-1009-6701)
Publication Details
- Journal
- Journal of Lake Sciences
- Published
- 2025-01-01
- DOI
- https://doi.org/10.18307/2025.0212
- Citations
- 1
- Primary Topic
- Flood Risk Assessment and Management
- Type
- article
- Field-Weighted Citation Impact
- 1.11