scholarly journals For research of acid rain in the twenty-first century. Result of connecting past, present and future. Trajectory analysis of acid rain investigation in wide area. Research by the joint council of national environmental pollution.

1999 ◽  
Vol 28 (11) ◽  
pp. 779-784
Author(s):  
Tsuyoshi OHIZUMI
Keyword(s):  
Environmental Pollution ◽  
Acid Rain ◽  
Trajectory Analysis ◽  
First Century ◽  
Wide Area ◽  
Twenty First Century ◽  
National Environmental

scholarly journals Influence of Industrialization and Environmental Protection on Environmental Pollution: A Case Study of Taihu Lake, China

2018 ◽  
Vol 15 (12) ◽  
pp. 2628 ◽  
Author(s):  
Yan Li ◽  
Shenglu Zhou ◽  
Zhenyi Jia ◽  
Liang Ge ◽  
Liping Mei ◽  
...  
Keyword(s):  
Neural Network ◽  
Economic Development ◽  
Environmental Pollution ◽  
Environmental Protection ◽  
Neural Network Model ◽  
Taihu Lake ◽  
First Century ◽  
The Neural Network ◽  
Early Twenty ◽  
Twenty First Century

In order to quantitatively study the effect of environmental protection in China since the twenty-first century and the environmental pollution projected for the next ten years (under the model of extensive economic development), this paper establishes a Bayesian regulation back propagation neural network (BRBPNN) to analyze the typical pollutants (i.e., cadmium (Cd) and benzopyrene (BaP)) for Taihu Lake, a typical Chinese freshwater lake. For the periods 1950–2003 and 1950–2015, the neural network model estimated the BaP concentration for the database with Nash-Sutcliffe model efficiency (NS) = 0.99 and 0.99 and root-mean-square error (RMSE) = 3.1 and 9.3 for the total database and the Cd concentration for the database with NS = 0.93 and 0.98 and RMSE = 45.4 and 65.7 for the total database, respectively. In the model of extensive economic development, the concentration of pollutants in the sediments of Taihu reached the maximum value at the end of the twentieth century and early twenty-first century, and there was an inflection point. After the early twenty-first century, the concentration of pollutants was controlled under various environmental policies and measures. In 2015, the environmental protection ratio of Cd and BaP reached 52% and 89%, respectively. Without environmental protection measures, the concentrations of Cd and BaP obtained from the neural network model is projected to reach 2015.5 μg kg−1 and 407.8 ng g−1, respectively, in 2030. Based on the results of this study, the Chinese government will need to invest more money and energy to clean up the environment.

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