[1]夏富娴,张小梅,陈刚,等.不同林分密度华山松人工林下土壤理化性质和微生物群落差异分析[J].江苏林业科技,2025,52(05):1-8.[doi:10.3969/j.issn.1001-7380.2025.05.001]
　Xia Fuxian,Zhang Xiaomei,Chen Gang,et al.Differences of soil physico-chemical properties and microbial communities under Pinus armandii plantation with different stand density[J].Journal of Jiangsu Forestry Science &Technology,2025,52(05):1-8.[doi:10.3969/j.issn.1001-7380.2025.05.001]
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不同林分密度华山松人工林下土壤理化性质和微生物群落差异分析

《江苏林业科技》[ISSN:1001-7380/CN:32-1236/S]

卷:
第52卷
期数:
2025年05期
页码:
1-8
栏目:
试验研究
出版日期:
2025-10-31

文章信息/Info

Title:
Differences of soil physico-chemical properties and microbial communities under Pinus armandii plantation with different stand density
文章编号:
1001-7380（2025）05-0001-08
作者:
夏富娴1; 张小梅1; 陈刚2; 邱琳香1; 且沙子杰1; 郑崇兰1*; 刘永安1; 宋建平1
1. 凉山彝族自治州林业草原科学研究院，四川 西昌 615000；
2. 四川农业大学林学院，四川 成都 611130
Author(s):
Xia Fuxian1;  Zhang Xiaomei1;  Chen Gang2;  Qiu Linxiang1; Qiesha Zijie1;  Zheng Chonglan1*;  Liu Yongan1;  Song Jianping1
1. Liangshan Academy of Forestry and Grassland, Xichang 615000，China;
2. Sichuan Agricultural University, Chengdu 611130，China
关键词:
林分密度; 宏基因组学; 华山松人工林; 土壤养分; 微生物群落
Keywords:
Stand density;  Metagenomics;  Pinus armandii plantation;  Soil nutrient;  Microbial community
分类号:
S154.3；S714.2；S791.24
DOI:
10.3969/j.issn.1001-7380.2025.05.001
文献标志码:
A
摘要:
为了解华山松人工林林分密度对土壤及其生态系统的影响规律，该研究以四川省凉山彝族自治州会东县马头山华山松人工林为研究对象，选取低密度（550—600株/hm2）、中密度（1 050—1 125株/hm2）、高密度（1 400—1 475 株/hm2）林分，研究林下0—20 cm土层土壤理化特性与微生物群落结构的演变特征。结果表明：（1）研究区土壤均呈酸性（pH值4.89—5.03）；高密度林分有机质（62.99 g/kg）、全氮（3.13 g/kg）、全磷（0.43 g/kg）及有效磷（3.14 mg/kg）的含量较低密度林分显著提升10.86%—51.50%；（2）土壤中，放线菌门、假单胞菌门、酸杆菌门和绿弯菌门为优势菌门，其中高密度林分放线菌门的相对丰度较中、低密度林分分别提升了0.39%和1.25%；（3）Alpha多样性分析显示，土壤微生物群落的Shannon指数、Simpson指数在各林分密度间差异不显著，高密度林分土壤微生物ACE指数和Chao1指数与低、中密度林分差异显著，表明随林分密度的增加，土壤微生物群落的丰富度有所增加，但优势微生物类群的主导地位未发生改变；（4）RDA分析提示，土壤pH、全磷、有机碳、速效钾和铵态氮是驱动菌群演替的关键环境因子。研究表明，适度提高华山松人工林林分密度，可显著优化土壤养分循环，提高土壤微生物群落以及放线菌门的相对丰富度。
Abstract:
To learn the effect of stand density on soil ecosystem in Pinus armandii plantation, this trial was conducted in the Matoushan area of Huidong County, Liangshan Yi Autonomous Prefecture, Sichuan Province. Three stand density gradients—low (550—600 plants/hm2), medium (1 050—1 125 plants/hm2), and high (1 400—1 475 plants/hm2)—were selected, with three 20 m × 20 m plots per gradient established to investigate soil physicochemical properties and microbial community structures in the 0—20 cm soil layer. Key findings included: (1) Soils were uniformly acidic (pH 4.89—5.03). The soil under high-density stand exhibited significant increases in organic matter (62.99 g/kg), total nitrogen (3.13 g/kg), total phosphorus (0.43 g/kg), and available phosphorus (3.14 mg/kg), with enhancement rates ranging from 10.86% to 51.50% compared with the one under low-density stand. (2) Pseudomonadota, Acidobacteriota, Chloroflexota, and Actinomycetota were the dominant phyla. The relative abundance of Actinomycetota in the soil under high-density stand increased by 0.39% and 1.25% in comparison with those under medium- and low-density stands, respectively. (3) As for soil microbial community, Alpha diversity analysis showed that Shannon index and Simpson index had no significant difference among stand densities, while ACE index and Chao1 index of soil microbes in high-density stand were significantly different from those in low-and medium-density stands, indicating that the richness of soil microbial community increased with the increase of stand density, but the position of dominant microbial groups did not change; (4) Redundancy analysis (RDA) revealed soil pH, total phosphorus, organic carbon, available potassium, and ammonium nitrogen as key environmental drivers of microbial community dynamics. This study highlights that moderate stand density elevation can enhance soil nutrient cycling, microbial richness and relative abundance of Actinomycetota in P. armandii plantation, which offers scientific guidance for sustainable P. armandii plantation management.

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备注/Memo

备注/Memo:
收稿日期：2025-08-21;修回日期：2025-09-03
基金项目：凉山州科技计划项目“‘碳汇’背景下的会东县华山松人工林质量提升研究”（23ZDYF0137）
作者简介：夏富娴（1994- )，女，云南曲靖人，硕士。主要研究方向为森林培育。E-mail:lemonxfx@163.com
*通信作者：郑崇兰（1989- )，女，四川西昌人，高级工程师，硕士。主要研究方向为森林培育。E-mail:274177008@qq.com
更新日期/Last Update: 2026-01-13