Water quality indication of spectral probability distribution (SPD): correlation between SPD and Forel-Ule index in closed, connected water bodies

IF 1.4 4区地球科学 Q3 IMAGING SCIENCE & PHOTOGRAPHIC TECHNOLOGY

Remote Sensing Letters Pub Date : 2023-09-21 DOI:10.1080/2150704x.2023.2261150

Zhixuan Zhou, Weining Zhu

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引用次数: 0

Abstract

ABSTRACTThe spectral probability distributions (SPD) of water bodies in satellite images have demonstrated the potential for indicating the geographical and environmental features of their watersheds. This implies that SPDs also have the potential for indicating water quality features, but so far there have been no further studies on their correlations. In this study, 690 SPDs of global closed connected water bodies, mainly including lakes and reservoirs, were extracted from Landsat-8 images. These SPDs were classified into seven types, and the entropy of each SPD diagram was calculated. The correlation between the SPD diagram’s entropy and Forel-Ule index (FUI) is relatively good with R2 = 0.5651 – indicating that water bodies with better water quality are usually found to have smaller entropy in their SPD diagrams. This study demonstrates that SPD is a good indicator for not only the aquatic environment but also water quality monitoring.KEYWORDS: Forel-Ule index (FUI)spectral probability distribution (SPD)Landsat-8remote sensingwater quality AcknowledgmentsThis research was funded by the National Natural Science Foundation of China (No. 41971373) and the Science Foundation of Donghai Laboratory (No. DH-2022KF01009).Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingThe work was supported by the National Natural Science Foundation of China [41971373]; Science Foundation of Donghai Laboratory [DH-2022KF01009].

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谱概率分布水质指示:谱概率分布与封闭连通水体Forel-Ule指数的相关性

【摘要】卫星图像中水体的光谱概率分布(SPD)显示出指示流域地理和环境特征的潜力。这意味着spd也具有指示水质特征的潜力，但到目前为止，还没有进一步研究它们之间的相关性。本研究从Landsat-8图像中提取了全球690个封闭连通水体(主要包括湖泊和水库)的SPDs。将这些SPD划分为7种类型，并计算每个SPD图的熵。SPD图的熵与Forel-Ule指数(FUI)的相关性较好，R2 = 0.5651，说明水质越好的水体，其SPD图的熵越小。研究表明，SPD不仅是水体环境监测的良好指标，也是水质监测的良好指标。关键词:福瑞尔- ule指数(FUI)光谱概率分布(SPD) landsat -8遥感水质。dh - 2022 kf01009)。披露声明作者未报告潜在的利益冲突。本研究得到国家自然科学基金资助[41971373];东海实验室科学基金[DH-2022KF01009]。

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来源期刊

Remote Sensing Letters REMOTE SENSING-IMAGING SCIENCE & PHOTOGRAPHIC TECHNOLOGY

CiteScore

4.10

自引率

4.30%

发文量

审稿时长

6-12 weeks

期刊介绍： Remote Sensing Letters is a peer-reviewed international journal committed to the rapid publication of articles advancing the science and technology of remote sensing as well as its applications. The journal originates from a successful section, of the same name, contained in the International Journal of Remote Sensing from 1983 –2009. Articles may address any aspect of remote sensing of relevance to the journal’s readership, including – but not limited to – developments in sensor technology, advances in image processing and Earth-orientated applications, whether terrestrial, oceanic or atmospheric. Articles should make a positive impact on the subject by either contributing new and original information or through provision of theoretical, methodological or commentary material that acts to strengthen the subject.