猫儿山自然保护区3种森林类型土壤养分垂直分布特征  

Vertical distribution characteristics of three forest types' soil properties on Mao'er Mountain Biosphere Reserve

作　　者：邓小军[1,2,3] 曹继钊[1,2,3] 宋贤冲[1,2,3] 唐健[1,2,3] 陈风帆[1,2,3] 

机构地区：[1]广西优良用材林资源培育重点实验室,南宁530003 [2]广西壮族自治区林业科学研究院,南宁530003 [3]国家林业局中南速生材繁育实验室,南宁530003

出　　处：《生态科学》2014年第6期1129-1134,共6页Ecological Science

基　　金：林业公益性行业科研专项(201204101-11);广西优良用材林资源培育重点实验室自主课题资助项目(14-A-02-01);广西优良用材林资源培育重点实验室开放课题(12A0405;14B0202);广西林科院基本科研业务费项目(林科201411号)

摘　　要：为了探讨不同森林类型对土壤养分的影响,研究广西猫儿山自然保护区不同森林类型土壤养分垂直分布规律。结果表明:3种森林类型土壤p H值毛竹>杉木>水青冈变化值在4.10—5.32之间,随着土层的加深升高;3种森林类型土壤有机质含量在10.69—149.39 g?kg–1之间水青冈>杉木>毛竹,随着土层的加深递减;不同森林类型土壤全量N、全量P、速效N、速效K的含量随着土层加深呈下降趋势,且水青冈各层次土壤高于杉木和毛竹;水青冈和毛竹土壤速效P含量随着土层的加深而呈递减趋势,杉木土壤速效P随着土层的加深呈现不规律变化;土壤全量K平均含量杉木>毛竹>水青冈,随着土层的加深而升高。3种森林类型不同层次土壤有机质与土壤全N、速效N、速效K呈显著线性正相关,相关系数r≥0.901。In order to discuss the effects of different forest types on soil properties, 3 types of forest of Fagus longipetiolata, Chinese fir, Phyllostachys heterocycla in Mao＇er Mountain Biosphere Reserve of Guangxi Province were chosen to study the vertical distribution of soil properties. The result showed that pH values of 3 types forest lands were 4.10-5.32 and ranked as F. longipetiolata 〉 Chinese fir 〉 P. heterocycla; the vertical distribution of pH values increased with soil depth. Total N, total P, available N, available K contents of different forest lands decreased with soil depth; all levels of soils ofP. heterocycla were greater than Chinese fir and F. longipetiolata. Available P content of P. heterocycla and E longipetiolata showed a decreasing trend; available P of Chinese fir showed irregular changed with soil depth. The average soil total K concentrations of 3 types forest lands were Chinese fir 〉 P. heterocycla 〉 F. longipetiolata. Total K content increased with soil depth in the same forest land. Soil total N, available N, available K of different layers in 3 types of forest lands had a positively linear correlation with the soil organic matter content （r 〉 0.901）.

关 键 词：土壤性质 猫儿山 垂直分布 

分 类 号：S718.55[农业科学—林学]