The College of Geography and Environmental Science, Henan University, Kaifeng 475000, China.
School of Philosophy and Public Management, Henan University, Kaifeng 475000, China.
Int J Environ Res Public Health. 2022 Dec 8;19(24):16507. doi: 10.3390/ijerph192416507.
In the context of global climate governance, the study of land-use carbon emissions in the Yellow River Basin is crucial to China's "dual-carbon" goal in addition to ecological conservation and the high-quality developments. This paper computed the land-use carbon emissions of 95 cities in the Yellow River Basin from 2000 to 2020 and examined its characteristics with respect to spatio-temporal evolution and driving mechanisms. The findings are as follows: (1) The overall net land-use carbon emissions in the Yellow River Basin rose sharply from 2000 to 2020. (2) From a spatial perspective, the Yellow River Basin's land-use carbon emissions are high in the middle-east and low in the northwest, which is directly tied to the urban development model and function orientation. (3) A strong spatial link exists in the land-use carbon emissions in the Yellow River Basin. The degree of spatial agglomeration among the comparable cities first rose and then fell. "Low-Low" was largely constant and concentrated in the upper reaches, whereas "High-High" was concentrated in the middle and lower reaches with an east-ward migratory trend. (4) The rates of economic development and technological advancement have a major positive driving effect. Moreover, the other components' driving effects fluctuate with time, and significant geographical variance exists. Thus, this study not only provides a rationale for reducing carbon emissions in the Yellow River Basin but also serves as a guide for other Chinese cities with comparable climates in improving their climate governance.
在全球气候治理的背景下,研究黄河流域的土地利用碳排放对于中国的“双碳”目标、生态保护和高质量发展至关重要。本文计算了 2000-2020 年黄河流域 95 个城市的土地利用碳排放,并从时空演变和驱动机制两个方面检验了其特征。结果表明:(1)黄河流域土地利用碳排放量从 2000 年到 2020 年急剧上升;(2)从空间角度来看,黄河流域土地利用碳排放量呈现出中东部高、西北部低的特点,这与城市发展模式和功能定位直接相关;(3)黄河流域土地利用碳排放具有较强的空间关联性,可比城市之间的集聚程度先升后降,“低-低”型城市基本保持不变,主要集中在上游,而“高-高”型城市则集中在中下游,并呈现出向东迁移的趋势;(4)经济发展和技术进步的速度对碳排放量有较大的正向驱动作用,其他组成部分的驱动效应随时间波动,且存在显著的地理差异。因此,本研究不仅为黄河流域减少碳排放提供了依据,也为其他具有类似气候的中国城市改善气候治理提供了借鉴。