[Temporal and Spatial Heterogeneity and Its Influencing Factors of Carbon Surplus and Deficit at County-Level Areas in Shaanxi Province].

Q2 Environmental Science
Yi-Meng Ding, Ling Han, Xin Huang
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Abstract

Carbon source and sink monitoring is an important prerequisite for realizing the dual-carbon target and the evolution of its spatial-temporal pattern and the spatial-temporal heterogeneity of the driving factors are the scientific basis for the implementation of the emission reduction and sink enhancement policy according to the local conditions, which is of great importance for the sustainable development of the region. Based on the carbon balance of payment relationship, the carbon surplus and deficit of Shaanxi Province counties were calculated in 2000, 2010, and 2020 from land use, and a series of exploratory spatial and temporal analysis methods (ESTDA), including spatial autocorrelation, cold and hot spot analysis, standard deviation ellipse, and LISA-time pathway, were used to study the dynamics of carbon surplus and deficit in Shaanxi Province at different spatial-temporal scales. From the 21 indicators, six types of major driving factors were selected by principal component analysis, and the geographical spatio-temporal weighted regression model (GTWR) was used to identify their spatio-temporal heterogeneity to construct a comprehensive system of indicators to analyze the carbon deficit and its spatio-temporal heterogeneity in Shaanxi Province. The results showed that: ① A carbon surplus of 8.56 million tons in 2000, a carbon deficit of 3 296 tons in 2010, and a deficit of 33.34 million tons occurred in 2020 in Shaanxi Province, and the growth rate of carbon emissions was much larger than that of carbon sinks, which indicates that it was gradually moving towards carbon peaks in Shaanxi Province; however, there is a long way to go to achieve the goal of carbon neutrality. ② The geographical distribution of the "north deficit and south surplus" phenomenon was visually represented. A carbon deficit was concentrated in the wind and sand area along the Great Wall and Guanzhong plain. The spatial-temporal leap characteristics were more stable. In conclusion, efforts aimed at emission reduction and carbon sink enhancement were strategically directed towards the northern Shaanxi Region. ③ Among various indicator systems including urban construction, natural resources, anthropogenic activities, energy consumption, industrial development, and ecological protection indicator systems, only ecological protection positively drove carbon profit and deficit. Notably, natural resources had the strongest spatial and temporal heterogeneity in their impact on carbon deficit, and energy consumption was positively driven in some areas of Shaanxi Province. The results will provide accurate policy directions for the development of carbon neutral strategies in Shaanxi Province.

陕西省县域碳收支时空异质性及其影响因素[j]。
碳源汇监测是实现双碳目标的重要前提,其时空格局演变及其驱动因素的时空异质性是因地制宜实施减排增汇政策的科学依据,对区域可持续发展具有重要意义。基于碳收支关系,从土地利用角度计算了陕西省县域2000年、2010年和2020年的碳收支,并采用空间自相关、冷热点分析、标准差椭圆和lisa -时间路径等探索性时空分析方法研究了陕西省不同时空尺度的碳收支动态。通过主成分分析,从21个指标中筛选出6类主要驱动因素,利用地理时空加权回归模型(GTWR)识别其时空异质性,构建了陕西省碳赤字及其时空异质性的综合指标体系。结果表明:①陕西省2000年碳盈余856万吨,2010年碳赤字3296吨,2020年碳赤字3334万吨,碳排放增速远大于碳汇增速,表明陕西省正在逐步走向碳峰值,但实现碳中和的目标任重而道远。②“北亏南盈”现象的地域分布较为直观。碳赤字主要集中在沿长城和关中平原的风沙区。时空跃迁特征较为稳定。综上所述,减排和碳汇增强工作的战略方向是陕北地区。③在城市建设、自然资源、人为活动、能源消耗、产业发展、生态保护等指标体系中,只有生态保护正向推动碳盈亏。值得注意的是,自然资源对碳赤字影响的时空异质性最强,能源消费在陕西省部分地区受到正驱动。研究结果将为陕西省碳中和战略的发展提供准确的政策方向。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
环境科学
环境科学 Environmental Science-Environmental Science (all)
CiteScore
4.40
自引率
0.00%
发文量
15329
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