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Hyperspectral Prediction Model of Metal Content in Soil Based on the Genetic Ant Colony Algorithm TEXT SIZE: A A A
The accumulation of metals in soil harms human health through different channels. Therefore, it is very important to conduct fast and effective non-destructive prediction of metals in the soil. In this study, we investigate the characteristics of four metal contents, namely, Sb, Pb, Cr, and Co, in the soil of the Houzhai River Watershed in Guizhou Province, China, and establish the content prediction back propagation (BP) neural network and genetic-ant colony algorithm BP (GAACA-BP) neural network models based on hyperspectral data. Results reveal that the four metals in the soil have different degrees of accumulation in the study area, and the correlation between them is significant, indicating that their sources may be similar. The fitting effect and accuracy of the GAACA-BP model are greatly improved compared with those of the BP model. The R values are above 0.7, the MRE is reduced to between 6% and 15%, and the validation accuracy is increased by 12-64%. The prediction ability of the model of the four metals is Cr > Co > Sb > Pb. These results indicate the possibility of using hyperspectral techniques to predict metal content.
 

Publication name

 SUSTAINABILITY, 11 (11):10.3390/su11113197 JUN 1 2019

Author(s)

 Tian, Shiqi; Wang, Shijie; Bai, Xiaoyong; Zhou, Dequan; Luo, Guangjie; Wang, Jinfeng; Wang, Mingming; Lu, Qian; Yang, Yujie; Hu, Zeyin; Li, Chaojun; Deng, Yuanhong

Corresponding author(s) 

 BAI Xiaoyong 
 baixiaoyong@vip.skleg.cn  
 Chinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem, Guiyang 550081, Guizhou, Peoples R China.
 CAS Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Shanxi, Peoples R China. 
 Guizhou Educ Univ, Guizhou Prov Key Lab Geog State Monitoring Waters, Guiyang 550018, Guizhou, Peoples R China.

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