森林与环境学报2025，Vol.45Issue(3)：235-245,11.DOI:10.13324/j.cnki.jfcf.202411001
华北落叶松纯林和混交林土壤细菌群落β多样性及其环境解释
Soil bacterial beta diversity and its environmental interpretation in pure and mixed stands of Larix principis-rupprechtii
摘要
Abstract
Larix principis-rupprechtii is the pioneer tree species for afforestation in the east-central Loess Plateau,China.Revealing the patterns of soil bacterial beta diversity in the stands of this species and its interpretation can provide theoretical support for biodiversity conservation and ecological management in mountain ecosystems.Illumina high-throughput sequencing was employed to investigate the bacterial beta diversity in surface(0-10 cm)and sub-surface(10-20 cm)soil layers of different stand types across six altitudinal gradients(1 720,1 850,1 950,2 050,2 150,and 2 250 m)in L.principis-rupprechtii forests in Lüliang Mountains.The results showed that stand types had stronger effect on soil bacterial beta diversity than altitude and soil depth.Soil bacterial beta diversity was higher in pure stands than in mixed stands(L.principis-rupprechtii-Betula platyphylla).Soil factors(alkaline-hydrolyzable nitrogen and total nitrogen)were the key factors influencing the soil bacterial beta diversity in pure stands,with the positive total and direct effect values both of 0.378,followed by soil layer depth.Soil factors(bulk density and total phosphorus)were the major factors influencing the soil bacterial beta diversity in mixed stands,followed by thickness of undecomposed litter layer,with total effect values of-0.890 and 0.353,respectively.关键词
华北落叶松/土壤细菌群落/β多样性/海拔/林分类型Key words
Larix principis-rupprechtii/soil bacterial community/beta diversity/altitude/stand type分类
林学引用本文复制引用
牛亚洁,李新,韩有志,梁文俊,王传旭,王卓..华北落叶松纯林和混交林土壤细菌群落β多样性及其环境解释[J].森林与环境学报,2025,45(3):235-245,11.基金项目
国家自然科学基金项目"基于森林空间结构的华北落叶松人工林种子萌发及幼苗成活机制研究"(3150030508) （3150030508）
山西省基础研究计划项目(自由探索类)"运城盐湖可培养嗜盐古菌的多样性及功能菌株筛选"(202203021211114) （自由探索类）
山西省科技创新人才团队"嗜盐微生物资源利用"(202204051001035) （202204051001035）
山西省高校科技创新项目"基于iCAMP零模型的运城盐湖湿地土壤微生物群落构建机制研究"(2024L337) （2024L337）
运城市科技计划面上项目"运城盐湖湿地土壤环境-微生物-植被互馈作用机制研究"(YCKJ-2024030) （YCKJ-2024030）
运城市科技计划社会发展类项目"运城盐湖极端生境微生物'暗物质'资源发掘与利用"(YCKJ-2024022). （YCKJ-2024022）
