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秦岭北坡杨树人工林细根分布与土壤特性的关系
引用本文:燕辉,苏印泉,朱昱燕,张景群.秦岭北坡杨树人工林细根分布与土壤特性的关系[J].南京林业大学学报(自然科学版),2009,0(2).
作者姓名:燕辉  苏印泉  朱昱燕  张景群
作者单位:1. 西北农林科技大学林学院,陕西,杨凌,712100
2. 北京工商大学,北京市植物资源研究开发重点实验室,北京,100037
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:在秦岭山区北坡,对5年生杨树人工林细根表面积、细根体积、根长密度和细根生物量的垂直分布特征,以及这些根系参数与土壤理化特性的关系进行研究。结果表明:杨树人工林细根表面积、细根体积、根长密度和细根生物量基本上表现为随土壤深度增加而减少的趋势;各细根集中分布在0~20 cm土层中,其中0~10 cm土层中占40%左右,10~20 cm中集中了20%以上。土壤理化特性在0~80 cm土层中呈现各自的变化规律,土壤体积质量基本随土层加深而增加,土壤水分表现为变化不大的波动。土壤pH变动范围为6.14~6.71,且随土层加深呈波动变化趋势。土壤有机质、全氮、速效氮垂直变化趋势相似,随土层深度的增加而减少。在杨树人工林中,细根参数与多种土壤理化因子之间存在着不同程度的相关性,说明杨树人工林细根分布特征受土壤理化特性的影响,这反映了植物长期适应生境条件的有效策略。

关 键 词:杨树人工林  细根分布  土壤理化特性  秦岭北坡

Distribution characters of fine root of poplar plantation and its relation to properties of soil in the northern slope of Qinling Mountain
YAN Hui,SU Yin-quan,ZHU Yu-yan,ZHANG Jing-qun.Distribution characters of fine root of poplar plantation and its relation to properties of soil in the northern slope of Qinling Mountain[J].Journal of Nanjing Forestry University(Natural Sciences ),2009,0(2).
Authors:YAN Hui  SU Yin-quan  ZHU Yu-yan  ZHANG Jing-qun
Institution:1.College of Forestry Science, Northwest A&F University, Yangling 712100, China; 2.Beijing Key Lab of Plant Resource Research and Development, Beijing Technology and Business University, Beijing 100037, China
Abstract:The vertical distribution characteristic of fine root surface area,fine root volume,root lengthy density,and root biomass of 5-year-old poplar plantation forest,and their relationship with physic-chemical properties of soil in the northern slope of Qinling Mountain were studied.The results indicated that vertical distribution of fine root surface area,fine root volume,root lengthy density and root biomass of poplar forest are with the same trend as all of them decrease with the increase of soil depth.The fi...
Keywords:poplar plantation  distribution of fine root  physico-chemical properties of soil  the northern slope of Qinling Mountain  
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