中国土壤与肥料Issue(6)：23-29,7.DOI:10.11838/sfsc.1673-6257.24567
色季拉山急尖长苞冷杉林倒木分解对土壤养分的影响
Effects of decomposition of fallen wood on soil nutrients in Abies georgei var.smithii forest in Sejila mountain
摘要
Abstract
The primary forest of Abies georgei var.smithii was taken as the research object,and the soil nutrient content of different decomposition levels and the underlying soil were sampled,and the dynamics of understory nutrient and its effects on soil nutrient were analyzed.The results showed that:(1)With the deepening of decomposition degree of fallen wood,the contents of total organic carbon,total potassium,cellulose and pH value in the underlying soil decreased,while the contents of total phosphorus,calcium,magnesium and total nitrogen increased,and the changes of sodium and lignin were not obvious;(2)The contents of soil organic matter,available potassium,total nitrogen and available nitrogen decreased significantly with the deepening of the soil layer under fallen wood,while the contents of total potassium,total phosphorus and available phosphorus had no significant change with the deepening of the soil layer under fallen wood,while the soil pH value showed an increasing trend.In conclusion,the decomposition of fallen fir forest in Sejila mountain plays an important role in the maintenance of soil nutrients.It is suggested that the management and protection of fallen fir resources in forest should be further strengthened in future forest management.关键词
土壤养分/倒木/分解等级/急尖长苞冷杉林/色季拉山Key words
soil nutrient/fallen wood/decomposition grade/Abies georgei var.smithii forest/Sejila mountain引用本文复制引用
赵迎霞,任毅华,赵国庆,周彭浩,贾玉琪..色季拉山急尖长苞冷杉林倒木分解对土壤养分的影响[J].中国土壤与肥料,2025,(6):23-29,7.基金项目
国家自然科学基金面上项目(32371651) （32371651）
西藏高原森林生态教育部重点实验室研究生创新计划项目(XZA-JYBSYS-2023-21). （XZA-JYBSYS-2023-21）
