Environmental Background Value

2019 ◽  
pp. 153-153
Keyword(s):  
Background Value ◽  
Environmental Background

The Structure of Environmental Background Value of Cadmium in Jiaozhou Bay Waters

2014 ◽  
Vol 644-650 ◽  
pp. 5333-5335 ◽  
Author(s):  
Dong Fang Yang ◽  
Feng You Wang ◽  
You Fu Wu ◽  
Hua Zhong He ◽  
Si Xi Zhu
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Marine Environment ◽  
Pollution Control ◽  
Jiaozhou Bay ◽  
Background Value ◽  
Environmental Background

Sources of heavy metals in marine environment could be cagetoried as natrual source and artificial source. The portion from natrual source forms the environmental background value of heavy metal. This paper proposed the theory of the structure of environmental background value for heavy metal. Finally, this paper applied this theory in the analysis of the environmental background value of Cadmiun (Cd) in Jiaozhou Bay waters. This theory provides basis for pollution control and remediation of marine environment.

Evaluation functions for integral mapping

2017 ◽  
Vol 921 (3) ◽  
pp. 24-29 ◽  
Author(s):  
S.I. Lesnykh ◽  
A.K. Cherkashin
Keyword(s):  
Principal Component Analysis ◽  
Environmental Factors ◽  
Principal Components ◽  
Principal Component ◽  
Evaluation Function ◽  
Final Value ◽  
Evaluation Functions ◽  
Geographical Environment ◽  
Environmental Background ◽  
Integral Mapping

The proposed procedure of integral mapping is based on calculation of evaluation functions on the integral indicators (II) taking into account the feature of the local geographical environment, when geosystems in the same states in the different environs have various estimates. Calculation of II is realized with application of a Principal Component Analysis for processing of the forest database, allowing to consider in II the weight of each indicator (attribute). The final value of II is equal to a difference of the first (condition of geosystem) and the second (condition of environmental background) principal components. The evaluation functions are calculated on this value for various problems of integral mapping. The environmental factors of variability is excluded from final value of II, therefore there is an opportunity to find the invariant evaluation function and to determine coefficients of this function. Concepts and functions of the theory of reliability for making the evaluation maps of the hazard of functioning and stability of geosystems are used.

Movement of Elements between Soil and its Source Rock a Case Form Limestone Soil in Suzhou City, Anhui Province, China

2012 ◽  
Vol 610-613 ◽  
pp. 2904-2907
Author(s):  
Song Chen
Keyword(s):  
Trace Elements ◽  
Source Rock ◽  
Major And Trace Elements ◽  
Anhui Province ◽  
Background Value ◽  
High K ◽  
Suzhou City ◽  
Limestone Soil ◽  
High Migration ◽  
Cu And Zn

The limestone soils and its source rock samples had been collected from Suzhou area for the testing about major and trace elements. The concentration value have been compared with the background and the migration coefficient(K) of element form source rock to soil have been calculated, the result showed: the elements Ca and Th are enrichment, the Al is loss seriously, the Ti, V, Cr, Mn, Zn, Rb, Sr., Zr, and Pb are basic fairly with the background value; the K, Cu, Fe and As are slightly higher than the soil background values; The elements Si, Ti, Mn, Zr, Pb and Th have high K in subsoil layer; the element Fe, Cr, As and Rb have the least K in subsoil layer; the element Al, V, Cu and Zn can be showed disorder with the more high migration coefficient in topsoil.

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