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首页> 外文期刊>Journal of Arboriculture >Effects of urban tree management and species selection on atmospheric carbon dioxide
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Effects of urban tree management and species selection on atmospheric carbon dioxide

机译：城市树木管理和树种选择对大气二氧化碳的影响

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摘要

Trees sequester and store carbon in their tissue at differing rates and amounts based on such factors as tree size at maturity, life span, and growth rate. Concurrently, tree care practices release carbon back to the atmosphere based on fossil-fuelemissions from maintenance equipment (e.g., chain saws, trucks, chippers). Management choices such as tree locations for energy conservation and tree disposal methods after removal also affect the net carbon effect of the urban forest. Different species,decomposition, energy conservation, and maintenance scenarios were evaluated to determine how these factors influence the net carbon impact of urban forests and their management. If carbon (via fossil-fuel combustion) is used to maintain vegetation structure and health, urban forest ecosystems eventually will become net emitters of carbon unless secondary carbon reductions (e.g., energy conservation) or limiting decomposition via long-term carbon storage (e.g., wood products, landfills) can be accomplished to offset the maintenance carbon emissions. Management practices to maximize the net benefits of urban forests on atmospheric carbon dioXide are discussed.
机译：树木根据诸如成熟时的树木大小，寿命和生长速度等因素，以不同的速率和数量将树木隔离并存储在组织中。同时，树木护理实践基于维护设备（例如，链锯，卡车，削片机）的化石燃料排放将碳释放到大气中。管理选择，例如用于节能的树木位置和清除后的树木处置方法，也会影响城市森林的净碳效应。对不同物种，分解，节能和维护方案进行了评估，以确定这些因素如何影响城市森林及其管理的净碳影响。如果使用碳（通过化石燃料燃烧）来维持植被的结构和健康，城市森林生态系统最终将成为碳的净排放者，除非进行二次碳削减（例如节能）或通过长期碳存储限制分解（例如，木材产品，垃圾填埋场）可以完成以抵消维护性碳排放。讨论了最大化大气中二氧化碳对城市森林净收益的管理实践。

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