| 城市绿地不同植被群落对表层土壤入渗的影响 |
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| 引用本文： | 冯艳,谢栋博,陈军洲,董娜林,雷雅凯,贺丹.城市绿地不同植被群落对表层土壤入渗的影响[J].西北林学院学报,2021,36(3):267-272. |
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| 作者姓名： | 冯艳 谢栋博 陈军洲 董娜林 雷雅凯 贺丹 |
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| 作者单位： | （河南农业大学 风景园林与艺术学院，河南 郑州 450002） |
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| 摘 要： | 为探索郑州市城市不同植被群落对绿地表层土壤入渗的影响，以郑州市城区13种不同绿地表层土壤为对象，通过测定土壤物理性质及土壤饱和导水率，探讨了土壤物理性质对土壤入渗的影响。结果表明:1）不同绿地表层土壤的物理性质差别较大，乔灌草混合配置的绿地比单一种植的绿地理化性质更好，且土壤的物理理化性质易受到人为踩踏等因素的影响。2）不同绿地表层土壤水分入渗性能与持水能力差异显著，乔灌草混合配置的绿地比单一种植的绿地入渗性能和持水能力好，表现为较高的饱和导水率和田间持水量，其中银杏-麦冬配置的绿地饱和导水率最高，西府海棠-沿阶草配置的绿地饱和导水率最小；大叶黄杨单作绿地的田间持水能力最强，西府海棠-沿阶草配置的绿地田间持水能力最弱。3）土壤饱和导水率与总孔隙度呈极显著正相关关系，其中非毛管孔隙度与毛管孔隙度呈显著正相关关系。土壤饱和导水率与容重呈极显著负相关关系；田间持水量与土壤总孔隙度呈显著正相关。城市绿地建设采用乔灌草混合配置的形式，能有效提高绿地土壤的入渗能力和持水能力，降低城市内涝风险。
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| 关 键 词： | 城市绿地 土壤入渗 植被群落 饱和导水率 田间持水量 |
Effects of Different Vegetation Communities on Infiltration of Surface Soil in Urban Green Space |
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| FENG Yan,XIE Dong-bo,CHEN Jun-zhou,DONG Na-lin,LEI Ya-kai,HE Dan. Effects of Different Vegetation Communities on Infiltration of Surface Soil in Urban Green Space[J].Journal of Northwest Forestry University,2021,36(3):267-272. |
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| Authors: | FENG Yan XIE Dong-bo CHEN Jun-zhou DONG Na-lin LEI Ya-kai HE Dan |
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| Institution: | （College of Landscape Architecture,Henan Agricultural University,Zhengzhou 450002,Henan,China） |
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| Abstract: | In order to explore the influences of different vegetation communities on the surface soil infiltration in urban green spaces of Zhengzhou City,13 different green land surface soils were collected to measure the soil physical properties and saturated hydraulic conductivity and to discuss the effects of soil physical properties on soil infiltration.The results showed that 1) the physicochemical properties of the green space mixed with trees,shrubs and grasses were better than those with single planting green space.The physicochemical properties of the soil were easily affected by human trampling and other factors.2) The infiltration and water holding capacity of the surface soil of different vegetation communities were significantly different.The infiltration and water holding capacity of arbor,shrub and grass were better than those of single planting,which showed higher saturated water carrying capacity and field water holding capacity.Among them,the green space Ginkgo biloba-Ophiopogon japonicus had the highest saturated hydraulic conductivity,while Malus micromalus-Ophiopogon bodinieri had the lowest saturated hydraulic conductivity.The field capacity of Euonymus japonicus monoculture green space was the strongest,and the field capacity of M.micromalus-O.bodinieri was the weakest.3) Soil saturated hydraulic conductivity was positively correlated with total porosity,while non-capillary porosity was positively correlated with capillary porosity.Soil saturated hydraulic conductivity was negatively correlated with bulk density,and field capacity was positively correlated with soil total porosity.It was suggested that urban green space construction should adopt the mixed planting form with trees,shrubs and grass,which can effectively improve the infiltration capacity and water holding capacity of the green land soil and reduce the risk of urban waterlogging. |
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| Keywords: | urban green space soil infiltration vegetation community saturated hydraulic conductivity field capacity |
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