湖北农业科学 ›› 2026, Vol. 65 ›› Issue (6): 117-123.doi: 10.14088/j.cnki.issn0439-8114.2026.06.019

• 园艺·特产 • 上一篇    下一篇

不同间伐经营模式对灰木莲林分生长量和土壤理化性质的影响

李大华1, 梁大熠2, 冯春生2, 曾莉2, 杨梅3, 罗华龙3, 魏国余1   

  1. 1.广西国有高峰林场,南宁 530001;
    2.广西大学林学院/广西高校亚热带人工林培育与利用重点实验室,南宁 530004;
    3.广西壮族自治区国有七坡林场,南宁 530225
  • 收稿日期:2026-03-06 出版日期:2026-06-25 发布日期:2026-06-26
  • 通讯作者: 魏国余(1979-),男,河北宽城人,正高级工程师,硕士,主要从事森林资源培育与林木育种研究工作,(电话)13737943265(电子信箱)426812353@qq.com。
  • 作者简介:李大年(1983-),男,广西防城港人,工程师,主要从事森林资源培育与林业经营管理,(电话)13457856608(电子信箱)858703070@qq.com。
  • 基金资助:
    广西自筹经费林业科技项目(2024GXZCLK20; 2025GXZCLK18)

Impacts of thinning management regimes on stand growth and soil physicochemical properties of Magnolia sumatrana

LI Da-hua1, LIANG Da-yi2, FENG Chun-sheng2, ZENG Li2, YANG Mei3, LUO Hua-long3, WEI Guo-yu1   

  1. 1. Guangxi Gaofeng State Owned Forest Farm, Nanning 530001, China;
    2. Guangxi Colleges and Universities Key Laboratory for Cultivation and Utilization of Subtropical Forest Plantation/School of Forestry,Guangxi University,Nanning 530004, China;
    3. Guangxi Zhuang Autonomous Region State-Owned Qipo Forest Farm, Nanning 530225, China
  • Received:2026-03-06 Published:2026-06-25 Online:2026-06-26

摘要: 为探究不同经营模式对灰木莲(Magnolia sumatrana)人工林生长与土壤理化特性的影响,本研究设置目标树经营(T1)、传统间伐经营(T2)和不间伐(CK)3种处理,测定林木胸径和树高生长量及土壤理化指标的变化。结果表明,T1和T2处理下林木胸径、树高、单株材积和蓄积量的生长量均高于CK,其中T2处理显著大于CK。各处理林分除土壤容重外,总孔隙度、毛管孔隙度、毛管持水量、有机碳、全氮、全磷和全钾含量均随着土壤层的加深而下降;T1处理的土壤容重最低,有机碳和全磷含量增加,总孔隙度、毛管孔隙度、毛管持水量、全氮及全钾含量均优于其他处理,反映出较好的土壤保水能力与肥力。相关性分析显示,胸径生长量与树高生长量呈显著正相关(P<0.05),与有机碳呈极显著正相关(P<0.01);树高生长量与土壤容重、全氮呈显著负相关(P<0.05),与有机碳、全磷呈极显著正相关(P<0.01);蓄积生长量与有机碳呈显著正相关(P<0.05)。主成分分析进一步验证T1处理在综合土壤质量效应上的优势。土壤质量指标综合评价结果显示各处理得分情况为T1>T2>CK。综上,目标树经营可有效改善土壤生态环境,促进灰木莲生长,是实现人工林高质量培育与可持续经营的优选模式。

关键词: 灰木莲(Magnolia sumatrana), 目标树经营, 传统间伐, 土壤理化性质, 林木生长

Abstract: To investigate the effects of different management models on the growth of Magnolia sumatrana plantations and the soil physicochemical properties, this study established three treatments: target tree management (T1), traditional thinning management (T2), and no thinning (CK). Tree diameter at breast height (DBH), tree height increment, and soil physicochemical indicators were measured. The results showed that, the growth increments of diameter at breast height (DBH), tree height, individual tree volume, and stand volume under T1 and T2 treatments were all higher than those under the CK treatment, with T2 significantly exceeding CK. Except for soil bulk density, total porosity, capillary porosity, capillary moisture capacity, organic carbon, total nitrogen, total phosphorus, and total potassium contents all decreased with increasing soil depth. The T1 treatment showed the lowest bulk density and higher contents of organic carbon and total phosphorus. It also exhibited superior performance in total porosity, capillary porosity, capillary moisture capacity, total nitrogen, and total potassium, indicating better water retention and fertility. Correlation analysis revealed a significant positive correlation between DBH and tree height growth(P<0.05), and a highly significant positive correlation between DBH growth and organic carbon(P<0.01). Tree height growth was significantly negatively correlated with bulk density and total nitrogen(P<0.05), and highly significantly positively correlated with organic carbon and total phosphorus(P<0.01). The stand volume growth was significantly positively correlated with soil organic carbon(P<0.05). Principal component analysis further confirmed the superiority of the T1 treatment in terms of overall soil quality. The comprehensive evaluation scores of soil quality indicators were T1>T2>CK. In conclusion, target tree management could effectively improve the soil ecological environment and promote the growth of Magnolia sumatrana, making it a preferred strategy for high-quality cultivation and sustainable management of plantations.

Key words: Magnolia sumatrana, target tree management, traditional thinning, soil physicochemical properties, tree growth

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