Towards understanding the role of ectomycorrhizal fungi in forest phosphorus cycling : a modelling approach

被引：12
作者：
Bortier, Michiel F. [1 ]
Andivia, Enrique [2 ]
Genon, Jose G. [3 ]
Grebenc, Tine [4 ]
Deckmyn, Gaby [1 ]
机构：
[1] Univ Antwerp, Ctr Excellence PLECO Plant & Vegetat Ecol, Dept Biol, Univ Pl 1, B-2610 Antwerp, Belgium
[2] Univ Alcala, Forest Ecol & Restorat Grp, Dept Ciencias Vida, Apdo 20,Campus Univ, Madrid 28805, Spain
[3] Catholic Univ Louvain, Earth & Life Inst Environm Sci, Croix Sud 2 L7-05-09, B-1348 Louvain La Neuve, Belgium
[4] Slovenian Forestry Inst, Vecna Pot 2, SI-1000 Ljubljana, Slovenia
来源：
CENTRAL EUROPEAN FORESTRY JOURNAL | 2018年 / 64卷 / 02期
关键词：
nutrient cycling; mechanistic model; pine forest; ectomycorrhizal fungi; phosphorus;
D O I：
10.1515/forj-2017-0037
中图分类号：
S7 [林业];
学科分类号：
0829 ; 0907 ;
摘要：
Many studies have shown the importance of ectomycorrhizal fungi (EM) in forests both for nutrient availability and for carbon (C) and nutrient cycling in the soil. Yet so far they are not incorporated in forest ecosystem growth and yield models. Recent research suggests phosphorus (P) shortage could be a major constraints to forest productivity in the future. For a realistic simulation of future forest ecosystem functioning, inclusion of detailed soil P cycling and the trees-EM interaction is necessary. We developed a full ecosystem P model that simulates P uptake by roots and EM, allocation within trees, physiological deficiency effects on C assimilation and allocation, release through litter decomposition, coupled with water, C and nitrogen (N) fluxes accounted for in the mechanistic forest stand model ANAFORE. Our results confirm the importance of incorporating EM in forest ecosystem models and suggest that the lack of incorporation of P in models may result in an under- or overestimation of forest growth. This new model has the potential of being used to assess the response of trees and/or stands to nutrient availability under different climate and management scenarios. With the current parameterization it is functional as a scientific research tool to investigate hypotheses.
引用
收藏
页码：79 / 95
页数：17
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