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| 深圳城市绿地土壤孔隙状况与水分特征研究 | |
| 引用本文： | 张波,史正军,张朝,卢瑛.深圳城市绿地土壤孔隙状况与水分特征研究[J].中国农学通报,2012,28(4):299-304. |
| 作者姓名： | 张波 史正军 张朝 卢瑛 |
| 作者单位： | 1. 广州市华农大园林建设有限公司,广州,510642 2. 深圳市仙湖植物园,广东深圳,518004 3. 华南农业大学资源环境学院,广州,510642 |
| 基金项目： | 广东省科技计划项目“不同土地利用方式对土壤质量的影响及低产土壤生态调控”（20108020311008）：深圳市科技计划项目“深圳城市绿地土壤生态退化机理及生态恢复技术研究”（SXF200646415）. |
| 摘 要： | 为了了解深受人为活动强烈影响的城市绿地的土壤物理特性，为充分发挥其增进植物生长、涵养水源和保护城市生态环境等功能提供管理依据，以深圳城市绿地土壤为研究对象，调查分析了土壤容重、孔隙状况、土壤水分常数和水分入渗特征等物理特性。结果表明：深圳城市绿地土壤的容重较高，平均值为1.56 g/cm3。土壤总孔隙度、毛管孔隙度、通气孔隙度较小，平均值分别为41.06%、39.78%、1.27%。土壤水分入渗率变幅很大，土壤初始入渗率为0~8.47 mm/min，稳定入渗率为0~5.90 mm/min。城市公园绿地、道路绿地土壤的容重显著高于城郊菜地土壤，而土壤孔隙度、最大持水量、毛管持水量和田间持水量显著低于城郊菜地土壤；表层0~10 cm的土壤容重、最大持水量、毛管持水量和田间持水量显著低于10~20 cm土壤，土壤孔隙度显著高于10~20 cm土壤。城市绿地土壤容重与孔隙度、田间持水量、最大持水量、初始入渗率及稳定入渗率均呈显著的负相关。 |
| 关 键 词： | 土壤孔隙状况 土壤水分特征 城市绿地 深圳市 |
| 收稿时间： | 2011/10/9 0:00:00 |
| 修稿时间： | 2011/12/7 0:00:00 |
Study on Soil Porosity and Water Characteristics of Urban Green Space in Shenzhen City |
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| Zhang Bo , Shi Zhengjun , Zhang Chao , Lu Ying.Study on Soil Porosity and Water Characteristics of Urban Green Space in Shenzhen City[J].Chinese Agricultural Science Bulletin,2012,28(4):299-304. | |
| Authors: | Zhang Bo Shi Zhengjun Zhang Chao Lu Ying |
| Institution: | 1Guangzhou SCA U Landscape Construction Co., Ltd, Guangzhou 510642; 2Shenzhen Fairy Lake Botanical Garden, Shenzhen Guangdong 518004; 3College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642) |
| Abstract: | AbstIn order to understand the physical properties of strongly and give guidance for exerting its functions for promoting plant human-affected soil in urban green space, growth, conserving water resources and protecting urban eco-environment. Soil bulk density, porosity status, water parameters and water infiltration characteristic for urban green space in Shenzhen City were determined. The results indicated that the bulk density of urban green space soil in Shenzhen City was high, with an average of 1.56 g/cm^3. The soil total porosity, capillary porosity and aeration porosity were low, 41.06%, 39.78% and 1.27%, respectively. Significant variation of soil infiltration rate was observed in the initial infiltration rate （0-8.47 mm/min） and the final infiltration rate （0-5.90 mm/min）, which were related to compaction of urban soil. Soil bulk density in urban park and roadside greenbelt were significantly higher than those of vegetable garden in suburb, but the soil porosity, maximum water-holding capacity, capillary moisture capacity and field moisture capacity were significantly lower than those of vegetable garden. The soil bulk density and water parameters in 0-10 cm depth were significantly higher than those in 10-20 cm depth, however, soil porosity showed different trend. There were significantly negative correlations between soil bulk density and soil porosity, field moisturecapacity, maximum water-holding capacity, the initial infiltration rate and the final infiltration rate. |
| Keywords: | soil porosity soil water characteristics urban green space Shenzhen City |
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