| 韩宙，叶根生，詹惠玲，史正军，卢瑛.深圳儿童乐园土壤质量评价及改良对策[J].广东农业科学,2013,40(5):55-59 |
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深圳儿童乐园土壤质量评价及改良对策 |
| Soil quality assessment and ameliorating measures for urban green space in Shenzhen Children爷s Paradise Park |
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| DOI： |
| 中文关键词: 城市绿地 土壤质量评价 改良对策 深圳儿童乐园 |
| 英文关键词: urban green space soil quality assessment ameliorating measures Shenzhen Children’s Paradise Park |
| 基金项目:广东省科技计划项目（2010B020311008，2010B020402003） |
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| 中文摘要: |
| 城市绿地是城市生态系统的重要组成部分, 被称为城市的”肺“，对维持良好的城市环境具有重要作用。城市绿地土壤通过其支撑的植物、微生物和自身的功能, 美化和净化城市环境, 对城市的可持续发展具有重要意义。采集深圳市儿童乐园内绿地0~30cm、30~60cm土层土壤, 研究土壤容重、孔隙度、颗粒组成、阳离子交换量、pH值、电导率、有机质、氮、磷、钾、过氧化氢酶、脲酶活性等物理、化学和生物学特性。结果表明, 深圳儿童乐园绿地土壤质地类别均为壤质类, 土壤中石砾含量较高；表层(0~30cm) 土壤容重较大, 土壤孔隙度较低。土壤pH值较该区域自然土壤明显增高, 呈微酸性或中性；土壤CEC 平均值小于10.0cmol/kg，土壤保肥能力差。土壤有机质处于低或极低水平;土壤N、P严重缺乏; 土壤钾素处于中等或以上水平。土壤酶活性低，酶活性与土壤黏粒、有机质、N、K含量等呈现显著相关性。根据深圳市儿童乐园绿地土壤质量状况, 提出了改善土壤通气状况、增施有机肥料、合理施用化学肥料和加强土壤肥力质量监测等土壤管理的措施和建议。 |
| 英文摘要: |
| Urban green space is a very important part of urban ecosystem, usually called as urban “lung”, and plays key role for
maintaining high quality urban environment. Through the functions of its supporting plants and microorganisms and itself, the soil of urban green space can beautify and clean urban environment, and has great significance for urban sustainability. Soil samples with 0~30 cm and 30~60 cm depths of Shenzhen Children’s Park were collected, soil bulk density, porosity, particle size distribution, CEC, pH, EC, organic matter, N, P, K，catalase and urease activities were studied in this paper. The results indicated that the soil texture type was loamy, gravel content in soil was high. Surface soil (0~30 cm) had a high bulk density and low porosity. The soil pH values were distinctly high as compared with natural soils in this area, and were slightly acid or neutral. The average of CEC was less than 10.0 cmol/kg and soil has a low nutrient-keeping capacity. Soil organic matter was low or very low; soil N and P were serious deficiency; soil K was medium or over medium status. Soil enzyme activities were very low, and have significant correlations with clay, organic matter, N and K contents.According soil quality situation of urban green space in Shenzhen Children’s Paradise Park, some measures and suggestions including improving soil aeration, applying more organic manures, applying chemical fertilizers rationally and monitoring soil fertility quality were put forward for soil scientific management. |
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