摘要
【目的】分析树种、起源和龄组对森林土壤性质的影响,从土壤物理结构和土壤养分等方面探讨区域尺度上杉木林和马尾松林的土壤特征,为森林可持续经营和立地质量精准评价提供理论依据。【方法】基于广东省全国森林资源清查土壤调查数据,采用方差分析、相关性分析、主成分分析等多元统计方法相结合,探究杉木林和马尾松林土壤因子在不同起源和不同龄组间的差异性及相关性。【结果】广东省马尾松林与杉木林不同树种之间森林土壤性质在有机质、全氮、全磷、碱解氮等9个指标差异显著,同一树种在天然林和人工林两种不同起源之间差异不显著,同一树种在幼龄林、中龄林、近熟林和成熟林不同龄组之间差异不显著。土壤各因子之间相关性较强,全氮、碱解氮、有效磷等土壤因子与平均胸径和平均树高之间呈显著正相关,树木生长对土壤养分具有促进作用。马尾松林土壤综合得分:不同起源为天然林<人工林;不同龄组为成熟林<中龄林<幼龄林<近熟林。杉木林土壤综合得分:不同起源为人工林<天然林,不同龄组为幼龄林<近熟林<中龄林<成熟林。【结论】杉木和马尾松不同树种之间差异显著,不同起源之间差异不显著,不同龄组之间差异不显著。马尾松人工林和杉木天然林的土壤质量较好,在不同龄组中马尾松近熟林和杉木成熟林土壤质量最好。所以,要根据不同树种、不同起源和不同龄组适地适树地进行森林可持续经营。
【Objective】To analyze the effects of tree species,origins and age groups on forest soil properties,and to explore the soil characteristics of Cunninghamia lanceolata forest and Pinus massoniana forest on regional scale from the aspects of soil physical structure and soil nutrients.The purpose of this paper is to provide a basis for the accurate evaluation of sustainable forest management and site quality.【Method】Based on the soil survey data of national forest resources inventory in Guangdong province,multivariate statistical methods such as variance analysis,correlation analysis and principal component analysis were combined.To explore the difference and correlation of soil factors between Cunninghamia lanceolata forest and Pinus massoniana forest in different origin and age groups.【Result】There were significant differences in 9 indexes of organic matter,total nitrogen,total phosphorus and alkali hydrolyzable nitrogen among different tree species between Pinus massoniana forest and Cunninghamia lanceolata forest in Guangdong province.There was no significant difference in the origin of the same tree species between natural forest and artificial forest.There was no significant difference in the same tree species among different age groups of young forest,middle-aged forest,near-mature forest and mature forest.There was a strong correlation between soil factors,such as total nitrogen,alkali hydrolyzable nitrogen and available phosphorus,and there was a significant positive correlation between total nitrogen,alkali hydrolyzable nitrogen,available phosphorus and average DBH and average tree height.Tree growth could promote soil nutrients.Soil comprehensive score of Pinus massoniana forest:different origins were natural forest<artificial forest;different age groups were mature forest<middle age forest<young forest<near mature forest.Soil comprehensive score of Cunninghamia lanceolata forest:different origins were artificial forest<natural forest,different age groups were young forest<near mature forest<middle age forest<mature forest.【Conclusion】There are significant differences in different tree species between Cunninghamia lanceolata and Pinus massoniana,but there is no significant difference in different origin,and there was no significant difference among different age groups.The soil quality of Pinus massoniana plantation and Cunninghamia lanceolata natural forest was better,and the soil quality of Pinus massoniana near mature forest and Cunninghamia lanceolata mature forest was the best in different age groups.Therefore,sustainable forest management should be carried out according to different tree species,different origins and different age groups.
作者
刘晓彤
李海奎
曹磊
LIU Xiaotong;LI Haikui;CAO Lei(Research Institute of Forest Resource Information Techniques,Chinese Academy of Forestry,Beijing 100091,China)
出处
《中南林业科技大学学报》
CAS
CSCD
北大核心
2020年第9期113-123,共11页
Journal of Central South University of Forestry & Technology
基金
国家自然科学基金项目(31770676)
中央级公益性科研院所基本科研业务费专项资金(CAFYBB2018ZB006)。
关键词
杉木
马尾松
土壤性质
方差分析
相关性分析
主成分分析
Cunninghamia lanceolata
Pinus massoniana
soil properties
analysis of variance
correlation analysis
principal component analysis
