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秦岭北坡几种人工林根系及土壤有机碳剖面分布特征的研究
引用本文:季志平,苏印泉,贺亮,赵广贤.秦岭北坡几种人工林根系及土壤有机碳剖面分布特征的研究[J].西北植物学报,2006,26(10):2155-2158.
作者姓名:季志平  苏印泉  贺亮  赵广贤
作者单位:1. 西北农林科技大学,林学院,陕西,杨陵,712100
2. 陕西省龙草坪林业局,陕西,武功,712200
基金项目:日元贷款陕西省植树造林生态环境监测项目
摘    要:对秦岭北坡浅山区刺槐、油松、侧柏人工林根系生物量、土壤有机碳含量以及土壤氮素进行了测定分析.结果表明,3种人工林之间的根系生物量存在差异,变异系数达到27.75%;土壤有机碳含量差异不明显,变异系数只有3.36%;在土壤剖面上,3种人工林根系生物量的垂直分布有明显差异,但土壤有机碳含量的层次变化基本一致,土壤有机碳主要集中在0~10 cm土层中,其含量超过0~60 cm土层总量的40%;3种人工林土壤全氮与土壤有机碳含量之间都呈显著的线性正相关.

关 键 词:秦岭北坡  人工林  土壤有机碳  根系生物量  土壤全氮
文章编号:1000-4025(2006)10-2155-04
收稿时间:2006-03-28
修稿时间:2006-03-282006-07-25

Root System and Organic Carbon Distributions in Soil Profiles of Several Plantations of Northern Slope of Qinling Mountains
JI Zhi-ping,SU Yin-quan,HE Liang,ZHAO Guang-xian.Root System and Organic Carbon Distributions in Soil Profiles of Several Plantations of Northern Slope of Qinling Mountains[J].Acta Botanica Boreali-Occidentalia Sinica,2006,26(10):2155-2158.
Authors:JI Zhi-ping  SU Yin-quan  HE Liang  ZHAO Guang-xian
Institution:1.College of Forestry Sciences, Northwest Sci-Tech University of Agriculture and Forestry, Yangling Shaanxi 712100, China; 2.Shaanxi Longcaoping Forestry Bureau, Wugong, Shaanxi 712200, China
Abstract:Root biomasses,soil organic carbon contents and soil carbon contents in Robinia pseudoacacia, Pinus tabulaeformis and Platycladus orientalis plantations in the northern slope of Qinling Mountain were investigated. It was shown that the three plantations differed in root biomass and the CV of their root biomasses reached 27.75%; They did not obviously differ in soil carbon content and the CV of their soil carbon contents was only 3.36%;They had significantly different root-biomass distributions a similar soil organic carbon distribution along their soil profiles and their soil organic carbon mainly concentrated in 0- 10 cm soil whose soil organic carbon made up 40% of the total soil organic carbon in 0-60 cm soil;In the three plantations the total soil nitrogen appeared to positively linearly correlate with soil organic carbon content.
Keywords:northern slope of Qinling Mountains  artificial forest  soil organic carbon  root biomass  total soil nitrogen
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