YU Fa-zhan,LI Bao-jie,YOU Hai-mei,et al.Study on Spatial-Temporal Changes on Undergrowth the Plantation Soil Bulk Density and Soil Porosity of Quanshan Nature Reserve in Xuzhou[J].Research of Soil and Water Conservation,2007,14(06):164-166.
徐州泉山自然保护区人工林下土壤容重与孔隙度时空变化研究
- Title:
- Study on Spatial-Temporal Changes on Undergrowth the Plantation Soil Bulk Density and Soil Porosity of Quanshan Nature Reserve in Xuzhou
- Keywords:
- the plantation; soil bulk density; soil porosity; spatial-temporal change; Quanshan Nature Reserve in Xuzhou
- 分类号:
- S152.5
- 摘要:
- 通过对设于泉山自然保护区人工侧柏林与刺槐林4块测试样地的土壤容重进行测定，同时与裸地进行对比，结果表明，该保护区人工林下土壤容重与孔隙度随时间无确定的变化规律；而在人工林下土壤空间结构变化规律明显：不管在任何时间段，均表现出土壤容重随土层深度增加而逐渐增大，土壤孔隙度随土层深度增加而逐渐减小的规律，并且侧柏林改变土壤容重的作用大于刺槐林。另外，该土壤容重均小于裸地，人工林通过腐殖质作用能够降低土壤容重，使其土壤通透性及保肥能力较好。
- Abstract:
- The soil bulk density in four sampling areas in Platycladus orientalis plantation forests and Robinia pseudoacacia forest of Quanshan Nature Reserve in Xuzhou are determined and compared with that in bare area.The results show that there’s no rule of the variation between undergrowth soil bulk density and soil porosity and the depth; while the rule of the variation of undergrowth soil spatial structure is clear.Regardless at what time the soil bulk density gets larger with the soil gets deeper while the soil porosity gets smaller with the soil gets deeper, besides, the effects of Platycladus orientalis plantation forests is larger than that of Robinia pseudoacacia forest.Besides, the soil bulk density of park greenery plot soil is larger than that of bare area and the soil bulk density gets smaller by the humus of plantation, which makes the penetration and retentivity fertilizer get better.
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备注/Memo
收稿日期:2006-11-20。
基金项目:徐州师范大学科研基金资助项目（04XLB23）
作者简介:于法展（1972- ），男，硕士，主要从事土壤生态与环境研究。