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ADJUSTING THE STRUCTURE COMBINATIONS OF PLANT COMMUNITIES IN URBAN GREENSPACE REDUCED THE MAINTENANCE ENERGY CONSUMPTION AND GHG EMISSIONS
Journal of Environmental Engineering and Landscape Management ( IF 1.3 ) Pub Date : 2018-11-15 , DOI: 10.3846/jeelm.2018.6126
Yang Liu 1 , Qiusheng Yang 1 , Lichao Duan 2
Affiliation  

Maintaining urban greenspace results in energy use and GHG emissions. To understand the change of the annual maintenance energy consumption and GHG emissions in varying combinations of plant structures (plant density or proportion of area covered) in urban greenspace, this study investigated 34 urban plant communities as sample plots (20×20 m), and divided them into woodland, shrub, herbaceous and grassland layers. The average energy use and GHG emissions in the woodland layer were 18.64 MJ/tree/y–1 and 0.23 kg/CO2-e/tree/y–1, respectively. In the shrub, herbaceous, and grassland layers, the average energy consumption was 3.73, 2.27, 7.23 MJ/m2/y–1, and the average GHG emissions were 0.06, 0.02, 0.09 kg/CO2-e/m2/y–1, respectively. The energy use and GHG emission curves had parabolic trends as the plant density in the woodland layer increased and increasing curves with two peaks as the plant area proportions of the shrub, herbaceous, and grassland layers increased. The annual maintenance of urban greenspace can divide into low, average and high levels of energy consumption and GHG emissions due to the change in the plant structure combinations. Furthermore, city managers and landscape designers can refer to the energy consumption and GHG emissions trends to understand the environmental impact of maintenance tasks. The future plant structures in greenspace can be better designed to improve ecosystem services based on limiting the maintenance environmental impacts.

中文翻译:

调整城市绿地植物群落结构组合,降低维护能耗和温室气体排放

维护城市绿地会导致能源使用和温室气体排放。为了解城市绿地中不同植物结构组合(植物密度或覆盖面积比例)下年维护能耗和温室气体排放的变化,本研究调查了34个城市植物群落作为样地(20×20 m),并将它们分为林地层、灌木层、草本层和草地层。林地层的平均能源使用和温室气体排放分别为 18.64 MJ/tree/y–1 和 0.23 kg/CO2-e/tree/y–1。灌木、草本和草地层平均能耗为3.73、2.27、7.23 MJ/m2/y-1,平均温室气体排放量分别为0.06、0.02、0.09 kg/CO2-e/m2/y-1 , 分别。能源利用和温室气体排放曲线呈抛物线趋势,随着林地层植物密度的增加而呈抛物线趋势,随着灌木层、草本层和草地层的植物面积比例的增加,呈两个峰值的增加曲线。由于植物结构组合的变化,城市绿地的年度维护可分为低、平均和高水平的能源消耗和温室气体排放。此外,城市管理者和景观设计师可以参考能源消耗和温室气体排放趋势来了解维护任务对环境的影响。在限制维护环境影响的基础上,可以更好地设计绿色空间中未来的植物结构,以改善生态系统服务。和草地层数增加。由于植物结构组合的变化,城市绿地的年度维护可分为低、平均和高水平的能源消耗和温室气体排放。此外,城市管理者和景观设计师可以参考能源消耗和温室气体排放趋势来了解维护任务对环境的影响。在限制维护环境影响的基础上,可以更好地设计绿色空间中未来的植物结构,以改善生态系统服务。和草地层数增加。由于植物结构组合的变化,城市绿地的年度维护可分为低、平均和高水平的能源消耗和温室气体排放。此外,城市管理者和景观设计师可以参考能源消耗和温室气体排放趋势来了解维护任务对环境的影响。在限制维护环境影响的基础上,可以更好地设计绿色空间中未来的植物结构,以改善生态系统服务。城市管理者和景观设计师可以参考能源消耗和温室气体排放趋势来了解维护任务对环境的影响。在限制维护环境影响的基础上,可以更好地设计绿色空间中未来的植物结构,以改善生态系统服务。城市管理者和景观设计师可以参考能源消耗和温室气体排放趋势来了解维护任务对环境的影响。在限制维护环境影响的基础上,可以更好地设计绿色空间中未来的植物结构,以改善生态系统服务。
更新日期:2018-11-15
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