基于生命周期方法的城市绿地生态环境负面影响评估

doi:10.13292/j.1000-4890.202302.005

生态学杂志 ›› 2023, Vol. 42 ›› Issue (2): 493-503.doi: 10.13292/j.1000-4890.202302.005

基于生命周期方法的城市绿地生态环境负面影响评估

员浩帆¹,张颖¹,徐文斌¹,孟伟庆^1*,冯剑丰²

（¹天津师范大学地理与环境科学学院，天津 300387； ²南开大学教育部环境污染过程与基准重点实验室，天津市跨介质复合污染环境治理技术重点实验室，天津 300071）

出版日期:2023-02-10 发布日期:2023-07-10

Negative impact assessment of urban green space ecological environment based on life cycle assessment.

YUN Hao-fan¹, ZHANG Ying¹, XU Wen-bin¹, MENG Wei-qing^1*, FENG Jian-feng²#br#

#br#

(¹School of Geographic and Environmental Science, Tianjin Normal University, Tianjin 300387, China; ²Key Laboratory of Pollution Processes and Environmental Criteria, Ministry of Education, and Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China).

Online:2023-02-10 Published:2023-07-10

摘要/Abstract

摘要： 城市绿地在施工建设以及后续的管理养护工作中所产生的生态环境负面影响往往被人们忽视。本研究以天津市城市绿地为对象，通过实地调研收集数据，采用生命周期评价方法，分析比较了城市绿地乔木层、灌木层以及草本层在建设阶段和管养阶段各环节的生命周期环境影响。结果表明：在50年生命周期内，单位面积乔木层、灌木层和草本层的环境影响综合指数分别为5.51×10³、8.75×10³和1.60×10³。城市绿地最主要环境影响类型是淡水毒性和土壤毒性，分别占总环境影响的73.12%和26.65%。病虫害防治为城市绿地环境影响的主要贡献环节，贡献率高达99.33%。与农林业相比，城市绿地的管养环境影响指数处于中高水平。因此，城市绿地所造成的生态环境负面影响不可忽视。研究结果可以为城市建设低碳生态型绿地以及科学化管养提供参考依据。

关键词: 城市绿地, 生命周期评价, 环境影响, 管理养护

Abstract: Urban green space is an important green infrastructure in cities, providing various ecological services. However, unlike natural green space, there will be a lot of energy and resource inputs during the construction and maintenance of urban green space, which will result in negative environmental impacts. These negative environmental impacts are often ignored. Based on field surveys, the negative environmental impact of urban green space in Tianjin was analyzed using life cycle assessment method. The results showed that during the 50-year life cycle, the environmental impact index of tree layer, shrub layer, and herb layer per unit area was 5.51×10³, 8.75×10³, and 1.60×10³ respectively. Freshwater toxicity and soil toxicity were the main environmental impact types of urban green space, accounting for 73.12% and 26.65% of the total, respectively. According to our calculation, pest control was the main contributing factor of environmental impacts of urban green space, accounting for 99.33%. Compared with agriculture and forestry, the environmental impact index of urban green space was relatively high. Therefore, the negative environmental impact of urban green space should be paid more attention. Our results can provide support for urban green space management in a more low-carbon and sustainable way.

Key words: urban green space, life cycle assessment, environmental impact, maintenance.

员浩帆, 张颖, 徐文斌, 孟伟庆, 冯剑丰. 基于生命周期方法的城市绿地生态环境负面影响评估[J]. 生态学杂志, 2023, 42(2): 493-503.

YUN Hao-fan, ZHANG Ying, XU Wen-bin, MENG Wei-qing, FENG Jian-feng. Negative impact assessment of urban green space ecological environment based on life cycle assessment.[J]. Chinese Journal of Ecology, 2023, 42(2): 493-503.

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基于生命周期方法的城市绿地生态环境负面影响评估

Negative impact assessment of urban green space ecological environment based on life cycle assessment.

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