Development and use of a framework for characterising computer models of silvoarable economics
Development and use of a framework for characterising computer models of silvoarable economics
复制标题
开发和使用表征可持续经济计算机模型的框架
DOI：
10.1007/s10457-004-5545-0
复制
发表时间：
2004
影响因子：
2.2
通讯作者：
C. Dupraz
中科院分区：
文献类型：
--
作者：
A. Graves;P. Burgess;F. Liagre;J. Terreaux;C. Dupraz
为一个题为“欧洲可耕作农林业”的项目审查了现有的可耕作经济学计算机模型，该项目旨在减少在欧洲引进和管理可耕作系统方面的不确定性。由于已发表的描述和比较这些模型的文献很少，因此开发了一个框架，然后用于描述五种计算机模型：POPMOD， ARBUSTRA，农林业地产模型，WaNuLCAS和农林业计算器。每个模型描述的关键特征是背景、建模的系统、经济分析的目标、经济观点、时空尺度、生物物理数据的生成和使用、模型平台和接口、输入要求和输出。每个模型都可以使用贴现成本效益分析，在一公顷水平上产生可耕、可耕或林业系统盈利能力的部分预算。虽然研究模型从普通农民的角度进行了分析，但为决策支持而开发的模型还包括从租户、佃农和合资企业参与者的角度进行评估。两个农场规模的模型，ARBUSTRA和农林业产业模型，也可以用来检查可耕系统对现有业务的可行性，并确定异质土地类型和分阶段种植的影响。该框架允许用户识别选择或开发特定模型的相关问题。
A review of existing computer models of silvoarable1 economics was undertaken for a project, entitled Silvoarable Agroforestry for Europe (SAFE), which aims to reduce uncertainty regarding the introduction and management of silvoarable systems in Europe. Because the published literature describing and comparing such models is sparse, a framework was developed and then used to characterise five computer models: POPMOD, ARBUSTRA, the Agroforestry Estate Model, WaNuLCAS, and the Agroforestry Calculator. Key characteristics described for each model were the background, systems modelled, objective of the economic analysis, economic viewpoint, spatial and temporal scales, generation and use of biophysical data, model platform and interface, and input requirements and outputs. Each of the models could produce a partial budget of the profitability of a silvoarable, arable, or forestry system at a one-hectare level using discounted cost–benefit analysis. Whilst the research models undertook the analysis from a viewpoint of a generic farmer, models developed for decision-support also included appraisals from the perspectives of tenants, share-croppers, and participants in a joint-venture. The two farm-scale models, ARBUSTRA and the Agroforestry Estate Model, could also be used to examine the feasibility of silvoarable systems on an existing business, and to determine the effects of heterogeneous land types and phased planting. The framework allows users to identify the pertinent issues for selecting or developing a particular model.