摘要
通过对杉木人工林采伐后更新造林不同类型林分的调查研究,对比分析其生长量及趋势变化,旨在探究不同清山处理方式下,南方地区杉木人工林更新模式。调查点设在赣州市崇义林业股份有限公司高坌林场,在炼山和不炼山(捡带)两种清山方式处理下,分别设置类型Ⅰ杉木人工林更新杉木纯林(炼山)、类型Ⅱ杉木人工林更新杉木纯林(不炼山)、类型Ⅲ杉木人工林更新木荷纯林(炼山)、类型Ⅳ杉木人工林更新木荷纯林(不炼山)、类型Ⅴ杉木人工林更新荷杉混交林(炼山)5种更新造林模式。采用随机样圆地为标准地调查,对杉木人工林更新造林不同类型林分立木生长量、材积、直径生长规律进行调查。造林9~13 a林分,不炼山清山方式后更新造林各类型林分立木生长量均比炼山清山方式后更新造林林分立木生长量好;不同造林类型林分在树高、胸径、冠幅及材积生长量上都有一定差异;造林9 a的类型Ⅴ林分杉木树高生长量较造林11 a类型Ⅰ林分杉木树高生长量高出0.58 m;造林9 a的类型Ⅴ林分木荷的胸径和冠幅生长量要好于造林13 a类型Ⅲ林分木荷的胸径和冠幅生长量,分别高出0.40 cm、0.26 m;类型Ⅴ林分内,杉木材积为0.0546 m^3,木荷材积为0.0381 m^3;造林9 a的类型Ⅴ林分木荷材积生长量略高于造林13 a类型Ⅲ林分木荷材积生长量,但差异不显著。类型Ⅴ中,木荷直径年平均生长量呈递增趋势,前10 a内均比杉木直径生长好,第10年后,木荷直径年均生长放缓,木荷直径连年生长量在前7 a均呈现持续增长的趋势,显著区别于其他4个类型,在第7年时达到最大,为1.17 cm;杉木直径连年生长量从第9年开始持续增长,第11年左右达到最大值,为1.45 cm。杉木人工林采伐杉木后,不炼山(捡带)清山方式处理下造林林分生长显著好于炼山清山方式;类型Ⅴ杉木人工林更新荷杉混交林是较好的杉木人工�
Based on the investigation and analysis of the different types of reforestation in Cunninghamia lanceolata plantation and analyzing the growth and the change of the growth rate, in order to explore the afforestation model of C. lanceolata plantation under different soil preparation treatment in the south of China. The investigation set up the 5 kinds of afforestation model that typeⅠ-C. lanceolata plantations updating C. lanceolata pure forests in controlled burning, type Ⅱ-C. lanceolata plantations updating C. lanceolata pure forests without controlled burning, type Ⅲ-C. lanceolata plantations updating Schima superba pure forests in controlled burning, type Ⅳ-C. lanceolata plantations updating S. superba pure forests without controlled burning, type Ⅴ-C. lanceolata plantations updating mixed forests of S. superba and C. lanceolata in controlled burning after cutting in Gaoben forest farm of Chongyi Forestry Co., LTD. in Ganzhou City, Jiangxi Province. Investigate the growth, volume, diameter growth regularity by random sample to circle as the standard. Each type of stand growth in controlled burning was better than that no controlled burning under afforestation 9～13 years stand. There are differences in the growth of height, DBH, crown and volume. That the height of C. lanceolata in type Ⅴ which afforestation of 9 years was0.58 m more than type Ⅲ which afforestation of 11 years. That the diameter and crown of S. superba in type Ⅴ which afforestation of 9 years was 0.40 cm and 0.26 m more than type Ⅲ which afforestation of 13 years, respectively. The volume growth of C. lanceolata was 0.0546 m～3 and S. superba was 0.0381 m～3 in type Ⅴ. That the volume of S. superba in type Ⅴwhich afforestation of 9 years was slightly higher than the type Ⅲ which afforestation of 13 years. But the differences were not significant. In type Ⅴ, the annual diameter growth of S. superba had reverse tendency and it was better than C.lanceolata while it growth decelerated 10 years later. There was a growin
作者
欧斌
王建皓
朱江华
刘华新
李畅
欧述荣
Ou Bin Wang Jianhao Zhu Jianghua Liu Huaxin Li Chang Ou Shurong(Jiangxi Environmental Engineering Vocational College, Ganzhou Jiangxi 341000, China Chongyi Forestry Co., Ltd., Chongyi Jiangxi 341500, China Ganzhou City Senyuan Seienee and Teehnology Seedlings Field, Anyuan Jiangxi 342100, China)
出处
《南方林业科学》
2017年第4期32-36,共5页
South China Forestry Science
基金
江西省赣州市科技项目"杉木主伐更新研究"(项目编号:200101)
关键词
杉木人工林
木荷
人工林更新
造林方式
Cunninghamia lanceolata plantation
Schima superba
plantation update
forestation ways
