浙江瑞安公益林群落结构及其与环境的相关性  

Vegetation Structure and Internal Relationship Between Distribution Patterns of Vegetation and Environment in Ecological Service Forest of Rui'an City in Zhejiang Province

作　　者：叶诺楠 沈娜娉[2] 商天其 高洪娣[3] 管杰然[1] 伊力塔[1] Nuonan Ye Naping Shen Tianqi Shang Hongdi Gao Jieran Guan Lita Yi(School of Forestry and Biotechnology, Zhejiang Agriculture and Forestry University, Lin＇an 311300, China The East China Institute of Forest Inventory and Planning of the State Forestry Administration, Hangzhou 310019, China Ecological Management Center, Forestry Department of Zhejiang Province, Hangzhou 310020, China)

机构地区：[1]浙江农林大学林业与生物技术学院,临安311300 [2]国家林业局华东林业调查规划设计院,杭州310019 [3]浙江省林业生态工程管理中心,杭州310020

出　　处：《植物学报》2017年第4期496-510,共15页Chinese Bulletin of Botany

基　　金：浙江省重点科技创新团队(No.2011R50027)

摘　　要：运用CCA排序、TWINSPAN等级分类、物种多样性以及种间联结等分析方法探讨了浙江省瑞安市公益林群落中地形因子对植物空间分布格局的影响以及主要优势物种的种间关系,以期解释公益林群落特征及其与环境因子的关系。结果表明,瑞安市公益林物种分布受海拔、坡度和坡向(总体上可解释69.1%的环境因子)的影响。运用TWINSPAN等级分类,在种-环境CCA排序结果的基础上将群落大致划分为13类群丛,其中以马尾松(Pinus massoniana)、杉木(Cunninghamia lanceolata)和柳杉(Cryptomeria fortunei)为优势种的群丛个数最多;群落的多样性水平总体较高,以马尾松、杉木和柳杉为优势种的群丛因其具有较好的地形条件而多样性最高;群落垂直层次的物种多样性由大到小依次为:灌木层>乔木层>草本层,同时3个垂直层次中主要优势种的正负关联比低(均小于2),其中乔木层优势种的正负关联比最高,说明研究区群落结构尚不稳定,但乔木层相对比较稳定。研究结果为研究区公益林管理提供理论支撑。With the construction of an ecological service forest（ESF） in Zhejiang province, the ESF has provided many ecological and social benefits to humans; thus, the number of studies about ESF has also increased. This study describes how to analyze the vegetation structure and the internal relationship between distribution patterns of vegetation and environment in 92 permanent sample plots of the ESF in Rui＇an city, Zhejiang province. The vegetation structure and the internal relationship between the distribution patterns of vegetation and environment were studied by using canonical correspondence analysis（CCA）, two-way indicator species analysis（TWINSPAN）, biodiversity and interspecies association.（1） The elevation, slop aspect and slop position were main environment factors in the community distribution.（2） Combined with the results of CCA, the 92 plots could be divided into 13 groups by TWINSPAN, and the associations of Pinus massoniana, Cunninghamia lanceolata and Cryptomeria fortunei were the most constructive species.（3） The diversity of vegetation was high, and the groups with P. massonian, C. lanceolata and C. fortunei as dominant species had higher diversity. The species diversities of different layers in the community were in the order of shrub layertree layerherb layer.（4） The stability of the community was not high（less than 2）, but the tree layer was relatively stable because the lower ratios of positive and negative association theoretically implied the instable vegetation structure. Therefore, the internal relationship between the distribution patterns of vegetation and environment and the dominant species association could be explained by a combination of all methods; these methods could provide a scientific foundation for the classification management of a regional ESF.

关 键 词：公益林 典范对应分析 二元指示种分析 多样性 种间联结 

分 类 号：S718.5[农业科学—林学]