米槠天然更新林与人促更新林枯枝落叶层现存量及养分贮量  

Standing and Nutrient Storage of the Forest Floor Between Natural Regeneration and Artificial Regeneration Forest of Castanopsis carlesii

作　　者：黄建辉 刘源豪 杜旭龙 熊德成[2,3] 杨智杰 HUANG Jianhui;LIU Yuanhao;DU Xulong;Xiong Decheng;Yang Zhijie(Fujian Sanming Forestry School,Sanming 365000,Fujian,China;School of Geographical Sciences&School of Carbon Neuturality Future Technology,Fujian Normal University,Fuzhou 35007,China;Fujian Sanming Forest Ecosystem National Observation and Research Station,Sanming 365000,Fujian,China)

机构地区：[1]福建三明林业学校,福建三明365009 [2]福建师范大学地理科学学院、碳中和未来技术学院,福州350007 [3]福建三明森林生态系统国家野外科学观测研究站,福建三明365001

出　　处：《亚热带资源与环境学报》2024年第2期31-38,共8页Journal of Subtropical Resources and Environment

基　　金：国家自然科学基金重点项目(31130013)。

摘　　要：枯枝落叶层现存量及其养分特征研究对了解枯枝落叶层在森林生态系统碳和养分循环中的作用具有重要的意义。通过对中亚热带米槠天然更新林与人促更新林枯枝落叶层现存量和养分贮量进行研究发现:1)总现存量不受更新方式的影响,而叶现存量天然更新林显著高于人促更新林,天然更新林枝现存量显著小于人促更新林,其他组分不受更新方式影响。2)在未分解层,天然更新林的枝现存量显著高于人促更新林。在半分解层,天然更新林的叶现存量显著高于人促更新林,而人促更新林的枝现存量显著高于天然更新林。3)两个林分同一分解层叶的氮(N)、磷(P)浓度均显著高于枝,而碳(C)浓度则无显著差异。4)2个林分枯枝落叶层的碳氮磷贮量无显著差异。结果表明,天然更新林更有利于养分的维持和循环。因此在未来研究中应更加关注天然更新方式对生态系统养分循环的影响。The forest floor standing and its nutrient characteristics are important for understanding the role of litter in carbon and nutrient cycling in forest ecosystems.The forest floor standing and nutrient storage of litter layer in natural regeneration and artificial regeneration forest of Castanopsis carlesii were studied in this research.1)The total forest floor standing was not affected by the regeneration ways,and the forest floor standing of natural regeneration was higher than that of assisted natural regeneration,the forest floor standing of natural regeneration was lower than that of assisted natural regeneration,and other components were not affected by the way of regeneration.2)In the undecomposed layer,the existing leaf stock of natural regeneration was significantly higher than that of artificial regeneration.In the semi-decomposed layer,the existing leaf stock of the natural regeneration was significantly higher than that of artificial regeneration,while the existing branch stock of the artificial regeneration was significantly higher than that of natural regeneration.3)The nitrogen(N)and phosphorus(P)concentrations of leaves in the same decomposition layer of the two forests were significantly higher than the branches,but the carbon(C)concentration was not significantly different.4)There was no significant difference in carbon,nitrogen and phosphorus storage between the two stands.The results showed that natural regeneration forest was more beneficial to nutrient maintenance and cycling.Therefore,more attention should be paid to the effects of natural regeneration on nutrient cycling in future study.

关 键 词：枯枝落叶层 中亚热带 天然更新林 人促更新林 养分贮量 

分 类 号：Q948.11[生物学—植物学]