黄河流域河南段县域能源消费碳排放时空格局演变特征

Spatio-temporal pattern evolution of carbon emissions from energy consumption at county level in the Henan section of the Yellow River Basin

为探究黄河流域河南段县域能源消费碳排放时空格局演变特征,本文基于2012—2021年的NPP-VIIRS夜间灯光数据和河南省能源消耗数据模拟出黄河流域河南段各县域碳排放量,运用泰尔指数、趋势分析、变异系数、标准差椭圆和空间自相关分析从不同角度对黄河流域河南段各县域能源消费碳排放时空格局演变特征进行分析,并制定了有效的碳减排策略。结果表明:2012—2021年黄河流域河南段能源消费碳排放总量呈波动上升趋势,碳排放总量由2012年28107.455万吨增长至2021年52461.807万吨,碳排放总体差异随研究尺度的减小而增大;黄河流域河南段县域碳排放空间分布格局差异显著,碳排放高值主要集中在郑州市东部及洛阳市洛龙区,碳排放呈“东北-西南”方向扩散趋势,各县域碳排放变化趋势存在显著的地域差异;各县域碳排放不平等性先增大后减小,碳排放空间集聚显著,呈以郑州市为核心向周围不断辐射的圈层格局。

It is of great significance to study the evolution characteristics of spatial-temporal pattern of carbon emissions for formulating effective carbon emission reduction strategies.Based on NPP-VIIRS night light data and energy consumption data of Henan Province from 2012 to 2021,carbon emissions of counties in the south section of the Yellow River Basin are simulated.Using Thiel index,trend analysis,coefficient of variation,standard deviation ellipse and spatial autocorrelation analysis,the spatiotemporal pattern evolution of energy consumption carbon emissions in Henan counties of the Yellow River Basin is analyzed from different perspectives.The results show that from 2012 to 2021,the carbon emissions in the Henan section of the Yellow River Basin show a significant upward trend of fluctuation,with the total carbon emissions increasing from 281074550 tons in 2012 to 524618870 tons in 2021.And the overall difference of carbon emissions increases with the decrease of the study scale.There are significant differences in the spatial distribution pattern of county carbon emissions in the Henan section of the Yellow River Basin.The high carbon emissions are mainly concentrated in the eastern part of Zhengzhou City and Luolong District of Luoyang City.The carbon emissions are spreading in the direction of“northeast-southwest”,and there are significant regional differences in the variation trend of county carbon emissions.The inequality of carbon emission in each county increases first and then decreases,and the carbon emission has a significant spatial agglomeration,showing a circle pattern with Zhengzhou as the core and radiating to the surrounding areas.