Spatial characteristics and optimization of urban living space carbon suitability index (ULS-CSI) in Tianjin, China

IF 3.3 3区环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES

Frontiers in Environmental Science Pub Date : 2024-08-26 DOI:10.3389/fenvs.2024.1409624

Zhaowei Yin, Xiaoping Zhang, Peng Chen, Qinghua Liao

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Abstract

The global climate crisis is escalating, and urban living Space (ULS) is a significant contributor to carbon emissions. How to improve the carbon suitability of ULS while promoting social and economic development is a global issue. This study aims to develop an evaluation system for comparing and analyzing carbon suitability inequality and spatial differences in different areas. To achieve this goal, an urban living space carbon suitability index (ULS-CSI) based on spatial organizational index (SOI) has been proposed. The ULS-CSI was calculated at the area scale in Tianjin using information from the Tianjin Land Use Database in 2021. The carbon emissions coefficient method was used to calculate the urban living space carbon emissions (ULSCE). Moran’I and LISA analysis were used to quantify the spatial differences of ULS-CSI. The results showed that the residential living area (RLA) carbon emissions was the highest at the area scale, with carbon emissions of 1.14 × 1011 kg, accounting for 33.74%. The green space leisure area (GLA) carbon absorption was the highest at the area scale, with carbon absorption of 5.76 × 105 kg, accounting for 32.33%. SOI in different areas have spatial heterogeneity as the SOI such as building area, road network density and land use characteristics are significantly different in different areas. Areas with superior CSI were primarily situated in Heping, Hexi, Nankai, and Beichen, accounting for 83.90%. Conversely, areas under the basic CSI threshold included Xiqing, Jinnan, and Dongli, accounting for 16.10%. Spatial characteristics of ULS-CSI in Tianjin portrayed a significant spatial positive correlation, indicating the highest autocorrelation degree of CSI at 500 m, with a Moran ’I value of 0.1733. Although these findings reflect the spatial characteristics of ULS-CSI and the SOI affecting the ULS-CSI at area scale, more perfect data are needed to reflect the complexity of structural factors affecting ULS-CSI at area scale. This study is helpful for urban planning to develop differentiated carbon reduction strategies and promote low-carbon and healthy urban development.

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中国天津城市生活空间碳适宜性指数（ULS-CSI）的空间特征与优化

全球气候危机不断升级，而城市生活空间（ULS）是碳排放的重要来源。如何在促进社会和经济发展的同时提高城市生活空间的碳适宜性是一个全球性问题。本研究旨在开发一套评估系统，用于比较和分析不同地区碳适宜性的不平等和空间差异。为实现这一目标，本文提出了基于空间组织指数（SOI）的城市生活空间碳适宜性指数（ULS-CSI）。利用 2021 年天津市土地利用数据库的信息，计算了天津市区域尺度的城市生活空间碳适宜性指数（ULS-CSI）。采用碳排放系数法计算城市生活空间碳排放量（ULSCE）。利用 Moran'I 分析和 LISA 分析量化了城市生活空间碳排放的空间差异。结果表明，居住生活区（RLA）的碳排放量在区域尺度上最高，为 1.14 × 1011 kg，占 33.74%。绿地休闲区（GLA）的碳吸收量在区域尺度上最高，为 5.76 × 105 kg，占 32.33%。不同地区的 SOI 具有空间异质性，因为不同地区的 SOI，如建筑面积、路网密度和土地利用特征都存在显著差异。CSI 优良地区主要分布在和平、河西、南开和北辰，占 83.90%。相反，基本 CSI 临界值以下的地区包括西青、津南和东丽，占 16.10%。天津 ULS-CSI 的空间特征呈现出显著的空间正相关性，表明在 500 米处 CSI 的自相关程度最高，Moran'I 值为 0.1733。虽然这些研究结果反映了区域尺度上 ULS-CSI 的空间特征和影响 ULS-CSI 的 SOI，但要反映区域尺度上影响 ULS-CSI 的结构因素的复杂性，还需要更完善的数据。本研究有助于城市规划制定差异化的碳减排策略，促进城市低碳健康发展。

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

Frontiers in Environmental Science Environmental Science-General Environmental Science

CiteScore

4.50

自引率

8.70%

发文量

2276

审稿时长

12 weeks

期刊介绍： Our natural world is experiencing a state of rapid change unprecedented in the presence of humans. The changes affect virtually all physical, chemical and biological systems on Earth. The interaction of these systems leads to tipping points, feedbacks and amplification of effects. In virtually all cases, the causes of environmental change can be traced to human activity through either direct interventions as a consequence of pollution, or through global warming from greenhouse case emissions. Well-formulated and internationally-relevant policies to mitigate the change, or adapt to the consequences, that will ensure our ability to thrive in the coming decades are badly needed. Without proper understanding of the processes involved, and deep understanding of the likely impacts of bad decisions or inaction, the security of food, water and energy is a risk. Left unchecked shortages of these basic commodities will lead to migration, global geopolitical tension and conflict. This represents the major challenge of our time. We are the first generation to appreciate the problem and we will be judged in future by our ability to determine and take the action necessary. Appropriate knowledge of the condition of our natural world, appreciation of the changes occurring, and predictions of how the future will develop are requisite to the definition and implementation of solutions. Frontiers in Environmental Science publishes research at the cutting edge of knowledge of our natural world and its various intersections with society. It bridges between the identification and measurement of change, comprehension of the processes responsible, and the measures needed to reduce their impact. Its aim is to assist the formulation of policies, by offering sound scientific evidence on environmental science, that will lead to a more inhabitable and sustainable world for the generations to come.