珠三角城间生态缓冲区生态服务功能及影响因素  

Ecological Service Function of Intercity Ecological Buffer Zone in Pearl River Delta and Its Influencing Factors

作　　者：夏丹丹 章驰 李毓琦 赵庆[1] Xia Dandan;Zhang Chi;Li Yuqi;Zhao Qing(Guangdong Academy of Forestry/Guangdong Provincial Key Laboratory of Silviculture Protection and Utilization,Guangzhou 510520,China)

机构地区：[1]广东省林业科学研究院/广东省森林培育与保护利用重点实验室,广州510520

出　　处：《中国城市林业》2023年第5期88-94,共7页Journal of Chinese Urban Forestry

基　　金：广东省林业科技创新项目(2021KJCX009,2022KJCX009)。

摘　　要：城间生态缓冲区具有净化污染、降低生态危害的作用,是森林城市群的特色指标之一。以珠三角森林城市群为例,选定典型城间生态缓冲区为试验区域,基于实地调查和林分清查,分析城间生态缓冲区森林生态服务功能及其影响因素。结果表明:1)珠三角城间生态缓冲区具有降低温度、消减颗粒物(PM_(2.5)、PM_(10))、丰富负氧离子等生态服务功能。2)城间生态缓冲区降温效应与平均胸径、平均树高存在显著(P<0.05)正相关;PM_(2.5)和PM_(10)消减效应与LAI呈不显著(P>0.05)正相关;丰富负氧离子能力与平均胸径、平均树高极显著(P<0.01)正相关,与郁闭度显著(P<0.05)正相关。综上可知,城间生态缓冲区所具备的生态服务功能与平均胸径、平均树高指标密切相关,因此,城间生态缓冲区建设宜种植树体高大、树冠茂盛的林木。The intercity ecological buffer zone has the functions of purifying pollution and reducing ecological hazards,which is one of the characteristic indicators of forest city agglomeration.Taking the Pearl River Delta urban agglomeration as an example,the study selects the typical intercity ecological buffer zones as the experimental area to analyze the forest ecological services and function and their influencing factors based on the data from field survey and stand inventory.The results show that:1) Intercity ecological buffer zones can provide ecological services such as reducing temperature,reducing PM_(2.5) and PM_(10),and increasing negative oxygen ions;2) Temperature reduction effects of intercity ecological buffer zone are significantly positively correlated with average DBH and average tree height(P<0.05);PM_(2.5) and PM_(10) reduction effects are not significantly positively correlated with LAI(P<0.05);the ability to increase negative oxygen ions is significantly positively correlated with average DBH and average tree height(P<0.01) and crown density(P<0.05).In conclusion,the ecological services and functions of the intercity ecological buffer zones are closely related to the average DBH and average tree height.Therefore,tall trees and trees with large crown are appropriate to be planted in the intercity ecological buffer zones.

关 键 词：珠三角城市群 城间生态缓冲区 生态服务 

分 类 号：S731.2[农业科学—林学]