Disentangling the Relationship between Tree Biomass Yield and Tree Diversity in Mediterranean Mixed Forests

编号 010030004

推送时间 20210719

研究领域 森林生态 

年份 2021 

类型 期刊 

语种 英语

标题 Disentangling the Relationship between Tree Biomass Yield and Tree Diversity in Mediterranean Mixed Forests

来源期刊 forest

期 第300期

发表时间 20210627

关键词 modeling;  forest structure;  silviculture;  pine;  oaks;  juniper; 

摘要 Tree biomass and the diversity relationship in mixed forest have an impact on forest ecosystem services provisions. Tree biomass yield is driven by several aspects such as species identity, site condition, stand density, tree age and tree diversity expressed as species mingling and structural diversity. By comparing diverse degrees of tree mixtures in natural forests, we can gain insight into the ecosystem services provision level and dynamic. Two monitoring sites in the Castilian Northern Plateau (Spain) have been analyzed to disentangle the relationships between biodiversity levels and tree biomass yield. Two permanent one hectare (ha) squared plots were established at Llano de San Marugán and Valdepoza. In each plot, all individual trees were measured (diameter and height), georeferenced and its species identity defined. Tree species in the two sites were Pinus sylvestris, Pinus nigra, Pinus pinea, Quercus pyrenaica, Quercus ilex, Quercus faginea and Juniperus thurifera. From these datasets, ten diversity indices that fall in three categories (species richness indices, species compositional/mingling indices and vertical structural indices) were used as predictor variables to fit several candidate models. By merging the trees by site (without considering the species identity) selected models include individual tree basal area as an explanatory variable combining by addition or interaction with diversity indices. When species are analyzed independently, structural diversity impacts on biomass yield in combination (additive or multiplicative) with tree size is negative for Pinus nigra and positive for the other species. View Full-Text

服务人员 王璐

服务院士 蒋有绪

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