LIU Ming-zhi,XU Jian-ping,LI Chou,et al.Study on Physical Properties and Nitrogen of Soil Under Phyllostachys pubescens Stand in Jinyun Mountain in Chongqing[J].Northern Horticulture,2014,38(18):177-180.
重庆缙云山楠竹林土壤水分物理性质和氮素研究
- Title:
- Study on Physical Properties and Nitrogen of Soil Under Phyllostachys pubescens Stand in Jinyun Mountain in Chongqing
- 文章编号:
- 1001-0009（2014）18-0177-04
- Keywords:
- Jinyun mountain in Chongqing; Phyllostachys pubescens stand; soil; water; physical and chemical properties; nitrogen
- 分类号:
- S 665.1
- 文献标志码:
- A
- 摘要:
- 以重庆缙云山国家级自然保护区的楠竹林为研究对象，并以广泛分布的常绿阔叶林作为对照，对楠竹林和常绿阔叶林内土壤第1层表土（A）0～5 cm，第2层（B）20～30 cm，第3层（C）50～60 cm的土壤容重等土壤水分物理性质、全氮、有效氮进行了测定。结果表明：随着土层深度、土壤容重的增加，阔叶林的第2、3层高于楠竹林；土壤孔隙度随着土层的增加而减小，楠竹林土壤孔隙度高于阔叶林；土壤毛管持水力、田间持水力、自然含水量阔叶林的表层大于楠竹林，楠竹林的第2、3层高于阔叶林；楠竹林的土壤质地较阔叶林疏松多孔，渗水、保水效果好；土壤全氮、有效性氮随土层的增加而减小，阔叶林表土层稍高于楠竹林，楠竹林第2、3层高于阔叶林。
- Abstract:
- Taking the soil layer in Phyllostachys pubescens stand in Jinyun Mountain in Chongqing as study object and taking broad-leaved forest which was widely distributed in Jinyun Mountain as reference.Soil bulk density，soil porosity，holding water capacity，total nitrogen and valid nitrogen were studied in the first surface(A) 0～5 cm，the second layer(B) 20～30 cm，and the third layer(C) 50～60 cm.The results showed that with increasing of soil layer，soil bulk density increased，but the second and the third layer were higher in broad-leaved stand than that in Phyllostachys pubescens stand.With increasing of soil layer，soil porosity deceased，soil porosity in Phyllostachys pubescens stand was higher than that in broad-leaved forest.Soil water holding capacity，field water holding capacity，and natural water content in broad-leaved forest were greater than their in Phyllostachys pubescens stand，while the second and the third layer in bamboo stand were higher than that in broad-leaved forest.Soil texture in bamboo forest were looser，more porous and more permeable than that in the broad-leaved forest，the effect of water preserve on Phyllostachys pubescens stand was slightly higher than that in broad-leaved forest， soil total nitrogen，available nitrogen decreased as the soil increased，total nitrogen，available nitrogen in broad-leaved forest were slightly higher than that in bamboo forest，the second and third layer in bamboo forest were higher than that in broad-leaved forest.
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备注/Memo
第一作者简介：刘明智（1969-），男，湖南绥宁人，博士研究生，副教授，现主要从事生态学和植物学等研究工作。E-mail:lmzbright@yahoo.com.cn.
基金项目：中国-欧盟生物多样性资助项目；国家自然科学基金资助项目（31070474）。
收稿日期：2014-05-20