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2000 年至 2020 年黄河流域土地利用碳排放的时空格局及驱动机制

Land-Use Carbon Emissions in the Yellow River Basin from 2000 to 2020: Spatio-Temporal Patterns and Driving Mechanisms.

机构信息

The College of Geography and Environmental Science, Henan University, Kaifeng 475000, China.

School of Philosophy and Public Management, Henan University, Kaifeng 475000, China.

出版信息

Int J Environ Res Public Health. 2022 Dec 8;19(24):16507. doi: 10.3390/ijerph192416507.

Abstract

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.

摘要

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。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2b99/9778955/2b9b9195f78d/ijerph-19-16507-g001.jpg

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