干旱区生态环境知识资源中心(Arid): Measurement of Total Nitrogen Concentration in Surface Water Using Hyperspectral Band Observation Method

Arid

DOI	10.3390/w12071842
	Measurement of Total Nitrogen Concentration in Surface Water Using Hyperspectral Band Observation Method
	Liu, Changjiang; Zhang, Fei; Ge, Xiangyu; Zhang, Xianlong; Chan, Ngai Weng; Qi, Yaxiao
通讯作者	Zhang, F
来源期刊	WATER
EISSN	2073-4441
出版年	2020
卷号	12 期号:7
英文摘要	Nitrogen overload is one of the main reasons for the deterioration of surface water quality. Hence, monitoring nitrogen loadings is vital in maintaining good surface water quality. Increasingly, the use of spectral reflectance to monitor nitrogen concentration in water has shown potentials, but it poses some problems. Therefore, it is necessary to explore new methods of quantitative monitoring of nitrogen concentration in surface water. In this paper, hyperspectral data from surface water in the Ebinur Lake watershed are used to select sensitive bands using spectral transformation, the spectral index, and a coupling of these two methods. The particle swarm optimization support vector machine (PSO-SVM) model, constructed on the basis of sensitive bands, is used quantitatively to estimate the total nitrogen concentration in surface water and subsequently to verify its accuracy. The results show that the bands near 680, 850, and 940 nm can be used as sensitive bands for estimation of the total nitrogen concentration of surface water in arid regions. Compared with the best estimation models constructed by sensitive bands selected using the spectral transformation or the spectral index alone, the best model based on the coupling of these two measures is more accurate (R-2= 0.604, Root Mean Square Error (RMSE) = 1.61 mg/L, Residual Prediction Deviation (RPD) = 2.002). This coupling method leads to a robust, accurate, and strong predictability model, and can contribute to improved quantitative estimation of water quality indexes of rivers in arid regions.
英文关键词	total nitrogen hyperspectral sensitive band spectral index PSO-SVM model
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000554176400001
WOS关键词	REMOTE-SENSING ESTIMATION ; CHLOROPHYLL-A ; ORGANIC-CARBON ; FRESH-WATER ; LAKE ; REFLECTANCE ; QUALITY ; PREDICTION ; CHINA ; RIVER
WOS类目	Environmental Sciences ; Water Resources
WOS研究方向	Environmental Sciences & Ecology ; Water Resources
来源机构	新疆大学 ; Commonwealth Scientific and Industrial Research Organisation
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/325314
作者单位	[Liu, Changjiang; Zhang, Fei; Ge, Xiangyu; Zhang, Xianlong; Qi, Yaxiao] Resources & Environm Sci Coll, Key Lab Wisdom City & Environm Modeling, Urumqi 830046, Peoples R China; [Liu, Changjiang; Zhang, Fei; Ge, Xiangyu; Zhang, Xianlong; Qi, Yaxiao] Xinjiang Univ, Key Lab Oasis Ecol, Urumqi 830046, Peoples R China; [Zhang, Fei] Natl Adm Surveying Mapping & Geoinformat, Engn Res Ctr Cent Asia Geoinformat Dev & Utilizat, Urumqi 830002, Peoples R China; [Zhang, Fei] Commonwealth Sci & Ind Res Org Land & Water, Canberra, ACT 2601, Australia; [Chan, Ngai Weng] Univ Sains Malaysia, Sch Humanities, George Town 11800, Penang, Malaysia
推荐引用方式 GB/T 7714	Liu, Changjiang,Zhang, Fei,Ge, Xiangyu,et al. Measurement of Total Nitrogen Concentration in Surface Water Using Hyperspectral Band Observation Method[J]. 新疆大学, Commonwealth Scientific and Industrial Research Organisation,2020,12(7).
APA	Liu, Changjiang,Zhang, Fei,Ge, Xiangyu,Zhang, Xianlong,Chan, Ngai Weng,&Qi, Yaxiao.(2020).Measurement of Total Nitrogen Concentration in Surface Water Using Hyperspectral Band Observation Method.WATER,12(7).
MLA	Liu, Changjiang,et al."Measurement of Total Nitrogen Concentration in Surface Water Using Hyperspectral Band Observation Method".WATER 12.7(2020).