摘要
依据造林树种的生物学特性,采用科学培育模式改善种间关系和生境条件以提高森林资源利用效率,是提升混交林生产力的有效途径之一。本研究评价了混交林生产力的两类估测方法,分析了种间竞争和互补效应影响混交林生产力的内在机制,并从外在因素出发,阐明了林内生长空间和生境因子如何调控混交林生产力,探讨了树种组成、林分密度、立地质量等对混交林生产力的影响过程,以及林分发育过程中生产力的整体变化规律。最后,在明晰影响混交林生产力形成的内在机制和生境要素的基础上,围绕当前混交林培育模式构建所亟需解决的关键科学问题,提出了今后混交林生产力提升的研究方向:完善生产力估算体系;建立长期的混交林样地;加强多种培育措施的综合效应研究;强化混交林的生长发育进程研究。
One of the effective ways to improve the productivity of mixed forests is enhancing resource use efficiency based on the biological characteristics of afforestation tree species.Resource use efficiency is affected by tree species interactions and environmental conditions through applying appropriate cultivation patterns.In this study,we evaluated two estimating methods for the productivity of mixed forest,analyzed the internal mechanism of interspecific tree competition and complementary effects on mixed forest productivity,clarified external factors of growth space and habitat factors control over productivity of mixed forest,discussed the effects of tree species composition,stand density and site quality on productivity,and illustrated the productivity trajectory during the development of mixed forests.Finally,based on the knowledge of the internal mechanism and habitat factors affecting the formation of mixed forest productivity,we focused on the key scientific issues that urgently need to be solved in the construction of the current mixed forests cultivation patterns,and put forward future research directions,including improving the productivity estimation system,establishing long-term mixed forest observation field,enhancing the research on the comprehensive effect of various cultivation measures,and reinforcing research of the growth and development dynamics in mixed forests.
作者
尹再芳
孙洪刚
谭梓峰
刘威
YIN Zaifang;SUN Honggang;TAN Zifeng;LIU Wei(Research Institute of Subtropical Forestry,Chinese Academy of Forestry,Hangzhou 311400,China;Nanjing Forestry University,Nanjing 210037,China;Hunan Mount Paradise Scenic Spot Management Office,Changning 421500,Hunan,China)
出处
《应用生态学报》
CAS
CSCD
北大核心
2023年第11期3135-3143,共9页
Chinese Journal of Applied Ecology
基金
国家重点研发计划项目(2021YFD2201303-03)资助。
关键词
混交林
森林生产力
种间相互作用
互补作用
环境因素
培育措施
mixed forest
forest productivity
interspecific interaction
complementarity
environmental factor
cultivation measure.
