城市绿地碳储量分布特征及其影响因素  

Distribution characteristics and influencing factors of carbon storage in urban green space

作　　者：邓亮 崔耀平[1,2] 唐晔 赵浩程 李万隆 孙亚茹 DENG Liang;CUI Yaoping;TANG Ye;ZHAO Haocheng;LI Wanlong;SUN Yaru(Key Laboratory of Geospatial Technology for the Middle and Lower Yellow River Regions,Ministry of Education,Henan University,Kaifeng,Henan 475004,China;The College of Geography and Environmental Science,Henan University,Kaifeng,Henan 475004,China)

机构地区：[1]河南大学黄河中下游数字地理技术教育部重点实验室,河南开封475004 [2]河南大学地理与环境学院,河南开封475004

出　　处：《森林与环境学报》2023年第3期319-328,共10页Journal of Forest and Environment

基　　金：国家自然科学基金项目“中国土地利用/覆被变化的气温反馈效应及机制研究”(42071415);河南省研究生教育改革与质量提升工程项目“遥感数字图像处理与云计算”(YJS2023JC22);河南省自然科学基金项目“植被生长变化的能量和温度反馈作用遥感模拟研究”(202300410049);2022年河南省社会科学规划决策咨询项目“河南生态系统碳汇能力提升研究”(2022JC45)。

摘　　要：为揭示城市绿地碳储量分布和群落结构特征,以开封4种类型城市绿地(公园绿地、防护绿地、广场绿地和附属绿地)为研究对象,利用野外样方调查和室内模拟相结合的方法,探究城市绿地植被和土壤碳密度的空间格局及其影响因素。结果表明,开封城市绿地的生态系统平均碳密度为17.57 kg·m^(-2),其中,植被平均碳密度为2.86~7.25 kg·m^(-2),且从公园绿地向附属绿地递减。土壤平均碳密度为8.74~18.72 kg·m^(-2),4种类型城市绿地的土壤平均碳密度差异显著(P<0.05),垂直上均随着土壤深度的增加而递减,且土壤碳密度是植被碳密度的1.88~3.17倍;研究区各树种的数量和空间分布均呈现不均匀特征;时间因素对城市绿地的植被和土壤碳密度影响显著(P<0.05),在城市绿地群落植被演变和土壤性质变异上起着重要的作用。材积密度、郁闭度和平均胸径对群落植被碳密度均有显著影响(P<0.05)。To determine the carbon storage distribution and community structure characteristics of urban green spaces,4 types of urban green space(park,protective,square and attached green space)in Kaifeng were used as the research objects.The spatial patterns and influencing factors of urban green space vegetation and soil carbon density were explored using a combination of field surveys and indoor simulations.The research results showed that the average carbon density of the urban green space in Kaifeng was 17.57 kg·m^(-2),of which the average carbon density of the vegetation was 2.86~7.25 kg·m^(-2)and decreased from pack green space to attached green space.The average soil carbon density was between 8.74 and 18.72 kg·m^(-2),and the average soil carbon densities of 4 types urban green spaces were significantly different(P<0.05).The soil carbon density decreased with increasing soil depth,and the soil carbon density was 1.88~3.17 times higher than the vegetation carbon density.The number and spatial distribution of various tree species in the study area were uneven.The time factor had a significant impact(P<0.05)on the vegetation and soil carbon density of urban green spaces,and played an important role in the evolution of urban green space community vegetation and soil property variation.Volume density,canopy density and average diameter at breast height all had significant effects on community vegetation carbon density(P<0.05).

关 键 词：碳储量 城市绿地 生态系统 生态碳汇 群落结构 

分 类 号：S718.56[农业科学—林学]