成都信息工程大学, 应用数学学院, 四川成都 610225
| 摘 要: | 为应对全球气候变暖问题,中国提出力争2030年前实现碳达峰。四川省是中国西部大省,在中国西部地区具有重大示范作用。因此,以四川省为例,通过查询国家统计局网站和中国碳核算数据库,收集四川省1997年至2021年的碳排放量及其影响因素的历史数据。分析四川省碳排放强度,通过计算影响因素与碳排放量的皮尔逊相关系数,最终选择7个重要影响因素并使用EViews软件预测其未来值。通过实验选择最佳节点数,建立BP神经网络模型(7-3-1结构)并预测2022年至2035年四川省碳排放量。结果表明该BP神经网络模型效果良好,各样本相关系数值均高于0.99,均方根误差RMSE为7.6078(单位:百万吨)。预测结果显示,2022年至2035年四川省碳排放量先增后降,碳达峰时间为2025年,峰值281.2988百万吨。 |
| 关 键 词: | BP神经网络; 四川省碳排放; 碳排放强度; 碳达峰; 相关系数; 预测 |
| DOI: | 10.57237/j.se.2024.01.001 |
College of Applied Mathematics, Chengdu University of Information Technology, Chengdu 610225, China
| Abstract: | To address the issue of global climate change, China proposed to strive to achieve the goal of peaking carbon emissions before 2030. Sichuan Province is a major province in western China and has a significant demonstration role in the western region. Therefore, taking Sichuan Province as an example, historical data on carbon emissions and their influencing factors from 1997 to 2021 were collected by querying the website of the National Bureau of Statistics and the CEADs. The paper analyzed the carbon emission intensity in Sichuan Province, selected 7 important influencing factors by calculating the Pearson correlation coefficient between the influencing factors and carbon emissions and predicted their future values by EViews. Then, selected the optimal number of nodes through experiments, established a BP neural network model (7-3-1 structure) and predicted the carbon emissions of Sichuan Province from 2022 to 2035. The results showed that the BP neural network model had good performance, with correlation coefficient values of all samples higher than 0.99 and root mean square error RMSE of 7.6078 million tons. The prediction results showed that from 2022 to 2035, the carbon emissions in Sichuan Province would first increase and then decrease, with a peak of 281.2988 million tons in 2025. |
| Keywords: | BP Neural Network; Carbon Emissions in Sichuan Province; Carbon Emission Intensity; Carbon Peaking; Correlation Coefficient; Prediction |
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