Your browser doesn't support javascript.
loading
Quadratic discriminant analysis model for assessing the risk of cadmium pollution for paddy fields in a county in China.
Wang, Xiumei; Li, Xiujian; Ma, Ruoyu; Li, Yue; Wang, Wei; Huang, Hanyu; Xu, Chenzi; An, Yi.
Afiliación
  • Wang X; Agro-environmental Protection Institute, Ministry of Agriculture, Tianjin 300071, China.
  • Li X; Department of Computer and Control Engineering, Nankai University, Tianjin 300071, China.
  • Ma R; Department of Computer and Control Engineering, Nankai University, Tianjin 300071, China.
  • Li Y; Department of Computer and Control Engineering, Nankai University, Tianjin 300071, China.
  • Wang W; Department of Computer and Control Engineering, Nankai University, Tianjin 300071, China.
  • Huang H; Agro-environmental Protection Institute, Ministry of Agriculture, Tianjin 300071, China.
  • Xu C; Agro-environmental Protection Institute, Ministry of Agriculture, Tianjin 300071, China.
  • An Y; Agro-environmental Protection Institute, Ministry of Agriculture, Tianjin 300071, China. Electronic address: simon8601@126.com.
Environ Pollut ; 236: 366-372, 2018 May.
Article en En | MEDLINE | ID: mdl-29414359
In China, the cadmium (Cd) levels in paddy fields have increased, which has led to the excessive uptake of Cd into rice grains. In this study, we determined the physicochemical properties of soil samples, including the pH, soil organic matter (SOM) content, cation exchange capacity (CEC), and total Cd content (Cdsoil) in order to establish a quadratic discriminant analysis (QDA) model for assessing the risk of Cd in rice and to calculate its prior probability. Decision tree and logistic regression models were also established for comparison. The results showed that the accuracy rate was 74% with QDA, which was significantly higher than that obtained using the decision tree (67%) and logistic regression (68%) models. The correlation coefficients between the soil pH and the other three factors (CEC, SOM, and Cdsoil) were higher in the inaccurate set than the accurate set, whereas the correlation coefficients were smaller in the inaccurate set than the accurate set.
Asunto(s)
Palabras clave
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Oryza / Suelo / Contaminantes del Suelo / Cadmio / Monitoreo del Ambiente / Modelos Estadísticos Tipo de estudio: Etiology_studies / Prognostic_studies / Risk_factors_studies País/Región como asunto: Asia Idioma: En Revista: Environ Pollut Asunto de la revista: SAUDE AMBIENTAL Año: 2018 Tipo del documento: Article País de afiliación: China Pais de publicación: Reino Unido
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Oryza / Suelo / Contaminantes del Suelo / Cadmio / Monitoreo del Ambiente / Modelos Estadísticos Tipo de estudio: Etiology_studies / Prognostic_studies / Risk_factors_studies País/Región como asunto: Asia Idioma: En Revista: Environ Pollut Asunto de la revista: SAUDE AMBIENTAL Año: 2018 Tipo del documento: Article País de afiliación: China Pais de publicación: Reino Unido