摘要
【目的】探讨松材线虫Bursaphelenchus xylophlius病疫木采伐对马尾松人工纯林林分结构的影响,对松材线虫病入侵后的马尾松林分的经营管理有理论和实践价值。【方法】在浙江省杭州市临安区,分别选择松材线虫病危害及周边未受害的马尾松Pinus massoniana人工纯林设置样地并进行调查。【结果】疫木卫生伐12 a后的结果表明:与马尾松纯林相比较,卫生伐之后马尾松重要值显著下降,从100.00%降至38.41%;胸径结构由正态分布变为反J型曲线;树高结构由单层林变为复层林;林木大小个体差异显著增加,两级分化显著加剧;林木分布从均匀分布变为随机分布;林木竞争压力增加,6 cm径阶林木竞争压力最大。【结论】卫生伐促使受害马尾松纯林向混交林演替的速度加快,多个林分结构指标发生了重大变化,单层马尾松同龄纯林演替为复层马尾松落叶阔叶树混交异龄林。图2表4参18。
[Objective]This study aims to explore the effects of sanitation cutting of the diseased pine trees infected by Bursaphelenchus xylophlius on the stand structure of pure Pinus massoniana plantation and provide a reference for the management of P.massoniana invaded by B.xylophlius.[Method]Field plots were selected of both a pure P.massoniana plantation infected by B.xylophlius and its neighbouring plantation uninfected to be investigated in Lin’an,Zhejiang,China.[Result]After 12 years of sanitation cutting,compared with the uninfected pure P.massoniana plantation,it is shown that the importance values of P.massoniana significantly decreased from 100.00%to 38.41%.The stand diameter distribution followed an inverse J-shaped curve.In terms of height stricture,single storied stand changed into multi-storied stand.The individual size inequality significantly increased.The distribution pattern of trees changed from uniform distribution to random distribution.The competitive index of trees significantly increased,and that of trees at 6 cm diameter class was the highest.[Conclusion]The sanitation cutting accelerated the succession speed of the infected pure P.massoniana,with significant changes in several stand structure indicators and the single-storied even-aged pure P.massoniana stand succeeded by the mixed multi-storied uneven-aged P.massoniana and broad-leaved trees stand.[Ch,2 fig.4 tab.18 ref.]
作者
张华锋
陈思宇
刘刚
王懿祥
ZHANG Huafeng;CHEN Siyu;LIU Gang;WANG Yixiang(Agroforestry Technology Extension Center in Lin’an District,Hangzhou 311300,Zhejiang,China;State Key Laboratory of Subtropical Silviculture,Zhejiang A&F University,Hangzhou 311300,Zhejiang,China;Zhejiang Provincial Key Laboratory of Carbon Cycling in Forest Ecosystems and Carbon Sequestration,Zhejiang A&F University,Hangzhou 311300,Zhejiang,China;College of Environment and Resource,Zhejiang A&F University,Hangzhou 311300,Zhejiang,China;Zhejiang Forestry Fund Management Center,Hangzhou 310020,Zhejiang,China)
出处
《浙江农林大学学报》
CAS
CSCD
北大核心
2020年第4期745-751,共7页
Journal of Zhejiang A&F University
基金
国家自然科学基金资助项目(31770681)
浙江省自然科学基金资助项目(LY17C160006)。
关键词
森林生态学
马尾松人工纯林
松材线虫病
卫生伐
林分结构
forest ecology
pure Pinus massoniana plantation
pine wilt disease
sanitation thinning
stand structure
