【作者】 史正军； 卢瑛； 钟晓； 甘海华； 刘振良； 陆少雁；

【Author】 SHI Zheng-jun ,LU Ying,ZHONG Xiao ,GAN Hai-hua, LIU Zheng-liang(Shenzhen institute of landscape gardening, Shenzhen 518003,China; College of natural resources and environment science, south china agricultural university, Guangzhou 510642,China)

【机构】 深圳市园林科学研究所； 华南农业大学资源与环境学院；

【摘要】 本文对深圳市主要城市绿地土壤的做了较系统的取样调查,并对公园绿地和街道绿地两个不同土地利用类型土壤及不同剖面层有机质和养分状况做了比较分析。调查结果表明,公园绿地土壤有机质、氮含量等高于街道绿地土壤;同时有机质和氮均表现出明显的层次性分布;公园和街道绿地的土壤酸碱度均高于自然土壤和农业土壤;有机质含量与土壤全氮、全磷、碱解氮有着极显著的相关关系,说明土壤有机质在保持土壤氮磷养分及提高氮养分有效性方面有着重要贡献。本次调查表明,通过积极地人为干预,科学地土壤改良和施肥等措施可以在一定程度上恢复和提高土壤的肥力状况。更多还原

【Abstract】 The main urban soil of green space in Shenzhen city was sampled systematically in this paper to survey the organic matter and nutrients conditions of different horizon soils in park and streets green space. The results showed that the content of organic matter and total nitrogen is higher in park soil than streets and those in topsoils (0 - 20 cm) are higher than subsurface soils (20-40 cm). The distribution of organic matter and nitrogen are obviously hierarchical in different horizons. The pH of soil in parks and streets are higher than in natural or agricultural soils. The content of organic matter is correlated with the content of soil total nitrogen, total phosphorus, and available nitrogen, which is showed that soil organic matter have a critical function on holding soil nutrient such as nitrogen and phosphorus and on improving soil nitrogen availability. The conclusion suggests that soil fertility could be recovered and improved to some degree by scientific soil amelioration and fertilization.更多还原