Effects of forest management on biomass stocks in Romanian beech forests

作     者：O.Bouriaud A.Don I.A.Janssens G.Marin E.-D.Schulze 

作者机构：Integrated Center for ResearchDevelopment and Innovation in Advanced MaterialsNanotechnologiesand Distributed Systems for Fabrication and ControlStefan cel Mare University720229 SuceavaRomania National Forest Inventory National Research Development Institute for Silviculture Voluntari Romania. vTIBraunschweigGermany Department of BiologyUniversity of AntwerpenUniversiteitsplein 12610 WilrijkBelgium Faculty of Silviculture and Forest EngineeringTransilvania University of BrasovStr. Sirul Beethovennr.1500123 BrasovRomania Max-Planck Institute for BiogeochemistryPO Box 10016407701 JenaGermany 

出 版 物：《Forest Ecosystems》 (森林生态系统（英文版）)

年 卷 期：2019年第6卷第3期

页      面：179-193页

核心收录：

学科分类：09[农学] 

基　　金：funding from the European Union Seventh Framework Program(FP7/2007–2013)under grant agreement n°244122 support by a grant of the Romanian National Authority for Scientific Research,CNCS-UEFISCDI,project number PN-II-IDPCE-2011-3-0781 support of the University of Antwerp Research Council through its Methusalem program 

主　　题：Forest management Forest productivity Biomass stocks National forest inventory 

摘      要：Background: Forest management aims at obtaining a sustainable production of wood to be harvested to generate products or energy. However, the quantitative influence of forest management and of removals by harvest on biomass stocks has rarely been analysed on a large scale based on measurements. Two hypotheses prevail: management induces a reduction of wood stocks due to cuttings, versus no impact because of increased growth of the remaining trees. Using data collected for 2840 permanent plots across Romania from the National Forest Inventory representing^2.5 Mha, we have tested to what extent different management types and treatments can influence the biomass stock and productivity of beech forests, and attempt to quantify these effects both on the short and long terms. Three main types of beech forest management are implemented in Romania with specific objectives: intensive wood production in production forests, protection of ecosystem services (e.g. watersheds, avalanche protection) in protection forests, and protection of the forest and its biodiversity in protected forests. Production forests encompass two treatments differing according to the stand regeneration method: the age class rotation management and the group shelterwood management. Results: We show that forest management had little influence on the biomass stocks at a given stand age. The highest stocks at stand age 100 were observed in production forests (the most intensively managed forests). Consequences of early cuttings were very short-termed because the increase in tree growth rapidly compensated for tree cuttings. The cumulated biomass of production forests exceeded that of protected and protection forests. Regarding the treatment, the group shelterwood forests had a markedly higher production over a full rotation period. The total amount of deadwood was primarily driven by the amount of standing deadwood, and no management effect was detected. Conclusions: Given the relatively low-intensity mana