首页> 中文期刊> 《安徽农业科学》 >深圳大南山地区土壤性质及其生态效应分析

深圳大南山地区土壤性质及其生态效应分析

         

摘要

[Objective]The research aimed to provide important foundation for the construction and management of the dominant population- Sinosideroxylon pedunculatum community the Nanshan Park. [Method]The Cutting ring method was adopted to investigate the soil physical and chemical properties in Dananshan Area,Shenzhen City. [Result]The parent rock was quartz sandstone, and numerous gravels existed in the soil. The porosity was around 50%. The soil was loamy and acidic with a mean pH of 4.75. The average contents of organic matter (OM) ,total nitrogen (TN) ,available nitrogen (AN) and phosphorus (AP) were 12,48 g/kg,0.49 g/kg,84.20 mg/kg and 3,31 mg/kg, respectively. Their contents decreased with the increase of soil depth. Positive co-relations existed between OM and IN, AN and AP,and their correlation coefficients were 0.93,0.85 and 0,72,respectively. Real water storage in 0-60 cm soil layer was 688.94 t/hm2,and the largest water storage was 1 506.07 t/hm2,OM,AN and AP stored in 0-60 cm soil layer averaged at 63.31 t/hm2,720.30 kg/hm2 and 28.39 kg/hm2, respectively. [Conclusion] These soil physical and chemical properties made a foundation for the production of the dominant populations-Sinosideroxylon pedunculatum community in Nanshan Park,Shenzhen City.%[目的]为南山公园的优势种群一铁榄群落的建设和管理提供理论依据.[方法]采用环刀法,对深圳大南山土壤的理化性质现状进行取样调查.[结果]大南山土壤母岩为石英砂岩,土壤中多石砾.土壤孔隙度50%左右,质地为壤土.土壤呈强酸性,pH平均为4.75.土壤有机质、全氮、碱解氮和速效磷平均含量分别为12.48 g/kg、0.49 g/kg、84.20 mg/kg和3.31 mg/kg,在剖面中的含量均随土层加深而下降.土壤有机质和全氮、碱解氮、速效磷呈显著正相关关系,相关系数分别为0.93、0.85和0.72.0-60 cm土层现实贮水量为688.94 t/hm2,最大保水能力为1 506.07 t/hm2,有机质、速效氮、磷贮量分另为63.31 t/hm2、720.30 kg/hm2和28.39 kg/hm2.[结论]土壤理化性质现状为深圳大南山的优势种群——铁榄群落的产生奠定一定的基础.

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