不同抚育措施对思茅松人工林生长及林下土壤养分的影响研究  

Effects of Different Silvicultural Treatments on the Growth of Pinus kesiya var.langbianensis Plantations and Soil Nutrient Content

作　　者：柳德胜 LIU Desheng(Forest and Grassland Resources Monitoring and Management Station of Mojiang Hani Autonomous County,Mojiang 654800,Yunnan Province,China)

机构地区：[1]墨江哈尼族自治县森林和草原资源监测管理站,云南墨江654800

出　　处：《内蒙古林业调查设计》2025年第1期19-22,共4页Inner Mongolia Forestry Investigation and Design

摘　　要：为探讨不同抚育措施对思茅松(Pinus kesiya var. langbianensis)人工林生长和林下土壤养分的影响,确定最佳抚育方式,促进思茅松人工林的科学经营和可持续发展,在云南省普洱市墨江哈尼族自治县思茅松人工林内设置4种抚育处理方式,通过测定各处理组思茅松的树高、胸径、生物量,以及土壤有机碳、全氮、水解氮、全磷、有效磷、全钾和速效钾含量,分析各处理间的差异。结果表明:不同抚育措施对思茅松生长和土壤养分均有显著影响(P<0.05)。CK处理和T3处理的思茅松树高和生物量最高,但CK处理的胸径显著大于其他处理(P<0.05);在土壤养分方面,T3处理的全氮含量最高,T2处理的全磷和水解氮含量最高,CK处理和T3处理的速效钾含量最高。因此,在保证思茅松良好生长的同时,T3处理(清除林下草本,保留非目标乔木和灌木,每年抚育1次)能够维持较好的土壤养分状况,且操作成本较低,是更具实际应用价值和生态效益的抚育方式,值得推广应用。To explore the effects of different silvicultural treatments on the growth of Pinus kesiya var.langbianensis plantations and the nutrient content of the underlying soil,and to determine the optimal silvicultural method to promote the scientific management and sustainable development of Pinus kesiya var.langbianensis plantations,four silvicultural treatment methods were set up in the Pinus kesiya var.langbianensis plantations in Mojiang Hani Autonomous County,Pu'er City,Yunnan Province.The height,diameter at breast height(DBH),and biomass of Pinus kesiya var.langbianensis were measured,as well as the content of soil organic carbon,total nitrogen,hydrolyzable nitrogen,total phosphorus,available phosphorus,total potassium,and readily available potassium.The differences among the treatments were analyzed.The results showed that different silvicultural treatments significantly affected the growth of Pinus kesiya var.langbianensis and soil nutrient content(P<0.05).The CK and T3 treatments had the highest tree height and biomass of Pinus kesiya var.langbianensis,but the DBH of the CK treatment was significantly larger than the other treatments(P<0.05).In terms of soil nutrients,the T3 treatment had the highest total nitrogen content,the T2 treatment had the highest total phosphorus and hydrolyzable nitrogen content,and the CK and T3 treatments had the highest readily available potassium content.Therefore,while ensuring the good growth of Pinus kesiya var.langbianensis,the T3 treatment(removal of understory herbaceous plants,retention of non-target trees and shrubs,and silvicultural treatment once a year)can maintain a better soil nutrient status,with lower operational costs and greater practical application value and ecological benefits,making it worthy of promotion and application.

关 键 词：抚育措施 思茅松人工林 生长指标 林下土壤养分 

分 类 号：S714[农业科学—林学]