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Plant functional types (PFTs) is a system used by climatologists to classify plants according to their physical, phylogenetic and phenological characteristics as part of an overall effort to develop a vegetation model for use in land use studies and climate models.〔 〕 PFTs provide a finer level of modeling than biomes,〔 which represent gross areas such as desert, savannah, deciduous forest. In creating a PFT model, areas as small as 1|sqkm are modeled by defining the predominant plant type for that area, interpreted from satellite data〔 or other means. For each plant functional type, a number of key parameters are defined, such as fecundity, competitiveness, resorption (rate at which plant decays and returns nutrients to the soil after death), etc., are defined for each PFT; the value of each parameter is determined or inferred from observable characteristics such as plant height, leaf area, etc.〔 〕 Climatologists and ecologists struggle to determine which minimal set of plant characteristics best model the actual responses of the biosphere in response to climate changes.〔 ==See also== * Ecotone 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「plant functional type」の詳細全文を読む スポンサード リンク
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