实现可持续建筑景观:对碳排放和减排战略进行空间明确的生命周期分析

IF 4 2区 环境科学与生态学 Q1 ECOLOGY Landscape Ecology Pub Date : 2024-08-28 DOI:10.1007/s10980-024-01953-6
Ting Mao, Yupeng Liu, Yingziwei Liu, Min Hao, Wei-Qiang Chen
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引用次数: 0

摘要

背景城市景观在实现可持续发展目标和零排放未来方面发挥着至关重要的作用。有效的碳减排战略需要对建筑物的排放进行空间明确的生命周期分析,详细的绘图可以突出建筑物的地理分布和具体特征,从而能够精确识别和有针对性地管理排放源。该框架考虑了材料流、能源流和废物流,捕捉了各种类型建筑的时空碳排放模式。结果将该框架应用于深圳的案例研究,我们观察到碳排放总量呈波动性增长,2016 年达到峰值 2.015 亿吨,随后有所下降。在 21 世纪之前,体现型排放占主导地位,而在 21 世纪之后,运行型排放变得十分重要。从空间上看,排放热点集中在城市中心区,并向外扩展,其中住宅建筑的贡献最大。情景分析表明,延长建筑寿命是减少内含碳的关键策略,而提高能效和采用清洁能源则能很好地共同减少运行碳。结论绘制建筑物整个生命周期的碳排放时空模式图,有助于城市规划者和决策者制定有针对性的减碳策略,从而提高城市的可持续性。
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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Towards sustainable building landscapes: a spatially explicit life-cycle analysis of carbon emissions and mitigation strategies

Context

The urban landscape plays a crucial role in achieving sustainability goals and aspiring to a zero-emission future. Effective carbon mitigation strategies need a spatially explicit and life-cycle analysis of building emissions, detailed mapping highlights the geographical distribution and specific characteristics of buildings, enabling precise identification and targeted management of emission sources.

Objectives

This study aims to create a framework that reveals the spatial and temporal dimensions of building carbon emissions at each stage of their life cycle.

Methods

We developed a comprehensive approach for carbon accounting in buildings. This framework captures spatiotemporal carbon emission patterns across various building types, considering material, energy, and waste flows. It also identifies potential mitigation strategies within the urban building landscape.

Results

Applying this framework to a case study in Shenzhen, we observed a fluctuating increase in total carbon emissions, peaking at 201.5 Mt in 2016 and subsequently declining. Embodied emissions dominated before the twenty-first century, while operational emissions became significant afterward. Spatially, emissions hotspots concentrated in central urban districts, expanding outward, with residential buildings contributing the most. Scenario analysis revealed that extending building lifetimes is a key strategy for mitigating embodied carbon, while improving energy efficiency and adopting clean energy work well together to reduce operational carbon.

Conclusions

Mapping the spatiotemporal patterns of carbon emissions throughout a building’s lifespan can assist urban planners and policymakers in formulating targeted strategies for carbon reduction, thereby enhancing urban sustainability.

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来源期刊
Landscape Ecology
Landscape Ecology 环境科学-地球科学综合
CiteScore
8.30
自引率
7.70%
发文量
164
审稿时长
8-16 weeks
期刊介绍: Landscape Ecology is the flagship journal of a well-established and rapidly developing interdisciplinary science that focuses explicitly on the ecological understanding of spatial heterogeneity. Landscape Ecology draws together expertise from both biophysical and socioeconomic sciences to explore basic and applied research questions concerning the ecology, conservation, management, design/planning, and sustainability of landscapes as coupled human-environment systems. Landscape ecology studies are characterized by spatially explicit methods in which spatial attributes and arrangements of landscape elements are directly analyzed and related to ecological processes.
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