成都市滨水绿地植物群落碳汇效益分析及配置模式研究  

Analysis of Carbon Sink Benefits and Discussion on Configuration Models of Plant Communities in Waterfront Green Spaces in Chengdu City

作　　者：陈丹旎 傅娅[1] Chen Danni;Fu Ya(School of Architecture,Southwest Jiaotong University,Chengdu 611756,Sichuan,China)

机构地区：[1]西南交通大学建筑学院,四川成都611756

出　　处：《绿色科技》2024年第19期6-15,共10页Journal of Green Science and Technology

基　　金：2023年四川省科技厅重点研发项目(编号:2023YFG0257)。

摘　　要：在“双碳”目标背景下,城市滨水绿地植物群落不仅能通过光合作用实现直接增汇,还能通过调节城市微气候实现间接减排,对促进城市绿色低碳转型与可持续发展具有重要意义。以成都市浣花溪公园、白鹭湾湿地公园、麓湖水城景区3个滨水区的滨水绿地植物群落为研究对象,通过实地调研,选取49个相对典型的植物群落,利用NTBC模型计算群落的碳汇效益,并对群落的树种组成、垂直结构、径级结构、种植密度、郁闭度对碳汇效益的影响进行分析。结果表明:①常绿植物与落叶植物对植物群落短期碳汇效益的影响相当,针阔叶混交型植物群落与常绿型植物群落的碳汇效益高于其他群落类型;②“乔-灌-草”复层结构的植物群落碳汇效益大于“乔-草”双层结构;③乔木种植密度在100~600株/hm^(2)时,乔木平均冠幅与平均胸径对植物群落的碳汇效益呈显著正相关,但当平均胸径大于40 cm时,植物群落的碳汇效益有所下降,而群落平均株高对植物群落的碳汇效益影响不显著;④同一径级范围内,种植密度对植物群落的碳汇效益呈显著正相关,增加灌木的种植密度有助于增强植物群落的碳汇能力;⑤郁闭度对植物群落的碳汇效益呈显著正相关。基于分析结果,筛选出高碳汇优势植物,并提出碳汇效益主导型、碳汇兼景观效益主导型和景观效益主导型三类滨水绿地植物群落配置模式,为建立适用于我国西南地区高碳汇效益的滨水绿地植物景观营造模式提供参考。In the context of"dual carbon",plant communities in urban waterfront green spaces can not only direct-ly increase sinks through photosynthesis,but also indirectly reduce emissions by regulating urban microclimate,which is of great significance for promoting urban low-carbon green transformation and sustainable development.This study focuses on the plant communities of waterfront green spaces in three waterfront areas:Huanhuaxi Park,Bailuwan Wetland Park,and Luhu Water City Scenic Area in Chengdu.Through field research,49 relatively typi-cal plant communities were selected,and the carbon sequestration benefits of the communities were calculated u-sing the NTBC model.The effects of tree species composition,vertical structures,diameter structures,planting density,and canopy closure on carbon sequestration benefits were analyzed.The results showed that:①evergreen plants and deciduous plants have similar effects on the short-term carbon sink efficiency of plant communities,and the carbon sink efficiency of coniferous and broad-leaved mixed plant communities and evergreen plant com-munities is higher than that of other community types;②the carbon sequestration benefits of plant communities with a"tree shrub grass"layered structure are greater than those with a"tree grass"double-layer structure;③when the planting density of trees is within the range of 100~600 plants/hm^(2),the average crown width and average breast height diameter of trees have a significant positive effect on the carbon sink efficiency of plant communities.However,when the average breast height diameter exceeds the range of 40 cm,the carbon sink effi-ciency of plant communities decreases,while the average plant height of the community has no significant effect on the carbon sink efficiency of plant communities;④within the same diameter range,planting density has a sig-nificant positive impact on the carbon sequestration efficiency of plant communities,and increasing the planting density of shrubs helps enhance the carbon sequestration capacity

关 键 词：滨水绿地 碳汇效益 植物群落 配置模式 NTBC 

分 类 号：S688[农业科学—观赏园艺]