徐州城市绿地土壤肥力质量评价  

Fertility quality assessment of urban green space soils in Xuzhou city

作　　者：司志国[1,2] 彭志宏[2] 俞元春[1,3] 唐虹 俞小鹏[1] 白玉杰[1] 关庆伟[1] 

机构地区：[1]南京林业大学森林资源与环境学院,江苏南京210037 [2]河南职业技术学院,河南郑州450046 [3]中国科学院南京土壤研究所,土壤与农业可持续发展国家重点实验室,江苏南京210008 [4]徐州市市政园林局,江苏徐州221018

出　　处：《南京林业大学学报（自然科学版）》2013年第3期60-64,共5页Journal of Nanjing Forestry University：Natural Sciences Edition

基　　金：国家自然科学基金项目(31270664);土壤与农业可持续发展国家重点实验室(中国科学院南京土壤研究所)开放基金项目(Y052010006);高等学校博士学科点专项科研基金项目(20123204110004);徐州市国家生态园林城市创建项目(XCT2010-011);江苏省普通高校研究生科研创新计划项目(CXZZ12-0553);江苏高校优势学科建设工程资助项目(PAPD)

摘　　要：通过野外调查和室内分析相结合的方法,研究了徐州市域不同绿地类型下土壤的理化特性。结果表明:徐州城市绿地0～20 cm土层的土壤密度平均为1.25 g/cm3,≥20～40 cm的为1.33 g/cm3,60%以上的土壤密度偏大,对城市绿地植物的生长有一定影响;徐州城市绿地土壤总体呈碱性,pH在7.5～8.5的约占93%;土壤有机质、全氮和速效磷含量普遍较低,速效钾含量丰富。0～20 cm土壤综合肥力指数(P)大小依次为公园绿地(1.45)、防护绿地(1.42)、道路绿地(1.37)、生产绿地(1.18)、街头绿地(1.17)、附属绿地(1.07)。各个绿地类型0～20 cm土壤的肥沃程度均处于中等水平(1.0<P<1.5),在≥20～40 cm土层,防护绿地、公园绿地和街头绿地处于中等水平,其他3种绿地处于较差水平(P<1.0)。Physical and chemical properties of urban green space soils from different functional areas in Xuzhou city were studied by field investigation and laboratory analysis.The results showed that the average soil bulk density from 0 to 20 cm soil layer in Xuzhou city was 1.25 g/cm3,1.33 g/cm3 from 20 to 40 cm,and 60% of soil bulk density were too high,soil bulk density would affect on the growth of plants to some extent.The urban green space soils in Xuzhou were generally alkaline,93% of the soils pH varied from 7.5 to 8.5.Soil organic matter,total nitrogen and available phosphorus were low,available potassium was rich.Soil integrated fertility index（P） from 0 to 20cm varied in the order of park green space（1.45）,protective green space（1.42）,road green space（1.37）,production green space（1.18）,roadside green space（1.17） and attached green space（1.07）.Soil integrated fertility from 0 to 20 cm of all the functional areas was medium（1.0P1.5）.Soil integrated fertility from 20 to 40 cm of protective green space,park green space and roadside green space were medium,other three green space soil were lower（P1.0）.

关 键 词：城市绿地 土壤理化特性 土壤肥力 徐州市 

分 类 号：S714[农业科学—林学]