补植闽楠及渐伐措施对杉木纯林更新改造效应分析  

Effects of interplanting Phoebe bournei and shelterwood cutting on renewal and transformation of pure Cunninghamia lanceolata forest

作　　者：杨桦[1] 龙蔚[1] 骆昱春[1] 江斌 金洪平 Yang Hua;Long Wei;Luo Yuchun;Jiang Bin;Jin Hongping(Jiangxi Academy of Forestry,Nanchang Jiangxi 330013,China;Guanshan forest farm of Yongfeng,Yongfeng Jiangxi 331500,China)

机构地区：[1]江西省林业科学院,江西南昌330013 [2]永丰县官山林场,江西永丰331500

出　　处：《南方林业科学》2020年第6期14-17,73,共5页South China Forestry Science

基　　金：江西省林业科学院重点公益类项目(项目编号:2017510802)。

摘　　要：以吉水县芦溪岭林场杉木纯林为研究对象,采用补植闽楠与杉木渐伐的措施对杉木纯林进行更新改造,对林分生长与土壤进行调查分析。18 a的观测研究表明:试验林闽楠标准木树龄13 a,平均胸径为10.68 cm,树高6.02 m,闽楠的连年生长量受到二次渐伐措施的影响很大,两次渐伐都促进了胸径连年生长量大幅增长,第13年仍处于高速生长期。对土壤化学性质分析表明,林分更新后,除土壤有机质、全磷、速效钾降低外,土壤pH值、全氮、全钾、速效氮、速效磷增加,林地土壤肥力没有明显流失。Taking Cunninghamia lanceolata pure forest in Luxiling forest farm of Jishui as the research object,the measures of replanting Phoebe bournei and gradually cutting were adopted to renew and transform the stand,and the growth and soil of the stand were investigated and analyzed.The results of 18 years′observation showed that the standard tree age of Ph.bournei was 13 years old,the average DBH was 10.68 cm,and the height was 6.02 m.The successive annual growth of Ph.bournei was greatly affected by the gradual cutting.The two-step progressive logging promoted the annual growth of DBH greatly,and it was still in the high-speed growth period in the 13th year.The analysis of soil chemical properties showed that soil pH,TN,TK,AN and AP increased after forest regeneration,except for the decrease of SOM,TP and AK.There was no obvious loss of soil fertility.

关 键 词：杉木 闽楠 渐伐 更新改造 

分 类 号：S791.27[农业科学—林木遗传育种] S792.24[农业科学—林学]