globalchange  > 气候变化与战略
DOI: 10.5194/gmd-13-905-2020
论文题名:
HETEROFOR 1.0: A spatially explicit model for exploring the response of structurally complex forests to uncertain future conditions-Part 1: Carbon fluxes and tree dimensional growth
作者: Jonard M.; André F.; De Coligny F.; De Wergifosse L.; Beudez N.; Davi H.; Ligot G.; Ponette Q.; Vincke C.
刊名: Geoscientific Model Development
ISSN: 1991959X
出版年: 2020
卷: 13, 期:3
语种: 英语
Scopus关键词: Fagus sylvatica ; Quercus petraea
英文摘要: Given the multiple abiotic and biotic stressors resulting from global changes, management systems and practices must be adapted in order to maintain and reinforce the resilience of forests. Among others, the transformation of monocultures into uneven-aged and mixed stands is an avenue to improve forest resilience. To explore the forest response to these new silvicultural practices under a changing environment, one needs models combining a processbased approach with a detailed spatial representation, which is quite rare. We therefore decided to develop our own model (HETEROFOR for HETEROgeneous FORest) according to a spatially explicit approach, describing individual tree growth based on resource sharing (light, water and nutrients). HETEROFOR was progressively elaborated within Capsis (Computer-Aided Projection for Strategies in Silviculture), a collaborative modelling platform devoted to tree growth and stand dynamics. This paper describes the carbon-related processes of HETEROFOR (photosynthesis, respiration, carbon allocation and tree dimensional growth) and evaluates the model performances for three broadleaved stands with different species compositions (Wallonia, Belgium). This first evaluation showed that HETEROFOR predicts well individual radial growth (Pearson's correlation of 0.83 and 0.63 for the European beech and sessile oak, respectively) and is able to reproduce size-growth relationships. We also noticed that the net to gross primary production (npp to GPP) ratio option for describing maintenance respiration provides better results than the temperature-dependent routine, while the process-based (Farquhar model) and empirical (radiation use efficiency) approaches perform similarly for photosynthesis. To illustrate how the model can be used to predict climate change impacts on forest ecosystems, we simulated the growth dynamics of the mixed stand driven by three IPCC climate scenarios. According to these simulations, the tree growth trends will be governed by the CO2 fertilization effect, with the increase in vegetation period length and the increase in water stress also playing a role but offsetting each other. © Author(s) 2020.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/158744
Appears in Collections:气候变化与战略

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作者单位: Earth and Life Institute, Université Catholique de Louvain, Louvain-la-Neuve, 1348, Belgium; AMAP, Univ Montpellier, CIRAD, CNRS, INRAE, IRD, Montpellier, 34000, France; Ecologie des Forêts Méditerranéennes (URFM), Institut National de la Recherche Pour l'Agriculture, l'Alimentation et l'Environnement (INRAE), Avignon, 84914, France; Gembloux Agro-Bio Tech, Université de Liège, Gembloux, 5030, Belgium

Recommended Citation:
Jonard M.,André F.,De Coligny F.,et al. HETEROFOR 1.0: A spatially explicit model for exploring the response of structurally complex forests to uncertain future conditions-Part 1: Carbon fluxes and tree dimensional growth[J]. Geoscientific Model Development,2020-01-01,13(3)
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