气候变化领域集成服务门户(CCPortal): Generalized model for plantation production of Eucalyptus grandis and hybrids for genotype-site-management applications

CCPortal

DOI	10.1016/j.foreco.2020.118164
	Generalized model for plantation production of Eucalyptus grandis and hybrids for genotype-site-management applications
	Smethurst P.J.; Valadares R.V.; Huth N.I.; Almeida A.C.; Elli E.F.; Neves J.C.L.
发表日期	2020
ISSN	0378-1127
卷号	469
英文摘要	The use of process-based modelling of wood production in forest plantation has increased in recent decades amongst researchers and forest companies. Although, such models are used by several plantation researchers and managers, improved options and sensitivity to soil characteristics, genotype, and management options are desirable. A new generation of forest productivity modelling needs to extend previous capabilities and incorporate modern software engineering technologies. Our objective was to develop and evaluate an Agricultural Production Systems sIMulator (APSIM) Next Generation model for simulating the growth of Eucalyptus grandis and hybrids with or of E. globulus and E. urophyylla. The model simulates stem, canopy and root development, resource capture and use (light, water, N), and C and N allocation as mediated by climate, soil, genotype physiological characteristics and management. Tree dimensions (stem diameter, height, volume) are calculated as empirical functions of above-ground biomass. Datasets used for model calibration or independent evaluation were from diverse conditions in Australia (5 sites) and Brazil (13 sites), and at several of these sites there were treatments for fertilizer, irrigation or genotype. For the calibration and evaluation datasets, model performance was very good for above-ground biomass (Nash Sutcliffe Efficiency, NSE = 0.96 and 0.84 respectively). Notwithstanding this general performance, and as an example, local calibration improved performance in one of the independent test datasets, suggesting that applications of the model for specific sites or clones may benefit from parameterization to local conditions. Simulation of management for weed cover, N fertilizer and genotype are also demonstrated. As the model performed well and has high flexibility, it warrants consideration by forest plantation managers and researchers for knowledge synthesis and operational productivity predictions of Eucalyptus and other plantation genotypes. © 2020
关键词	Agricultural robots Climate models Fertilizers Forestry Managers Productivity Software engineering Above ground biomass Agricultural production system Empirical functions Forest productivity Knowledge synthesis Physiological characteristics Process-based modelling Soil characteristics Physiological models aboveground biomass dicotyledon fertilizer application forest management genotype growth hybrid plantation forestry Calibration Eucalyptus Grandis Fertilizers Forestry Management Performance Production Productivity Australia Brazil Eucalyptus Eucalyptus globulus Eucalyptus grandis
语种	英语
来源机构	Forest Ecology and Management
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/132779
推荐引用方式 GB/T 7714	Smethurst P.J.,Valadares R.V.,Huth N.I.,et al. Generalized model for plantation production of Eucalyptus grandis and hybrids for genotype-site-management applications[J]. Forest Ecology and Management,2020,469.
APA	Smethurst P.J.,Valadares R.V.,Huth N.I.,Almeida A.C.,Elli E.F.,&Neves J.C.L..(2020).Generalized model for plantation production of Eucalyptus grandis and hybrids for genotype-site-management applications.,469.
MLA	Smethurst P.J.,et al."Generalized model for plantation production of Eucalyptus grandis and hybrids for genotype-site-management applications".469(2020).