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首页> 外文会议>Proceedings of joint international agricultural conference (JIAC 2009) >Harvest Evaluation Model and System of Fast-Growing and High-Yield Poplar Plantation
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Harvest Evaluation Model and System of Fast-Growing and High-Yield Poplar Plantation

机译：杨树速生丰产林收获评价模型与系统。

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The paper is based on the research of forestry experts' systems funded by “National Tenth-Five-Year 863 Plan”. In the context of the collective forest rights system reforms, in order to enhance the technological support to the farmers in the fast-growing and high-yield poplar cultivation and to satisfy the actual needs of related enterprises, the study focuses on the fast-growing and high-yield poplar plantation harvest model and related decision-making criteria. Taking Populus tomentosa Carr as an example, by adopting the age -diameter at breast height growth model, diameter and tree height model, and the dual volume model based on Hebei Province's data, the age-volume produce model is constructed; by adopting market price of the non-discount method which is relatively easy for farmers, PNW (Present Net Worth) and Le (Land Expectation Value) calculation methods, the economic benefits evaluation model is established. By using the calculation results of these models as a decision-making benchmark, the growth model, evaluation model and an calculation example of Populus tomentosa Carr are obtained. Based on the above-mentioned studies, the components and functions, model base and model resolver algorithm of the system are designed, and the economic benefits forecast process is set. The results of the research is applied to the “National Eleventh-Five-Year Plan” funded program "The research and application of key technologies in fast-growing and high-yield plantation production and management process informatization ". And the application obtains a satisfied result. By using harvest evaluation system to conduct economic benefits analysis of poplar varieties, the farmers and the investors can predict future earnings, and to make decisions in reforestation.
机译：本文基于“国家“十五五”计划”资助的林业专家系统研究。在集体林权制度改革的背景下，为了增强对杨树快速生长，高产栽培的农民技术支持，满足相关企业的实际需要，本研究着眼于快速生长杨树人工林高产收获模型及相关决策标准。以毛白杨为例，采用胸径增长模型的年龄-直径，直径和树高模型，以及基于河北省数据的双重体积模型，建立了年龄-产量模型；通过采用对农民比较容易的无折扣方法的市场价格，PNW（当前净值）和Le（土地期望值）计算方法，建立了经济效益评价模型。通过将这些模型的计算结果作为决策基准，获得了毛白杨生长模型，评价模型和计算实例。在上述研究的基础上，设计了系统的组成和功能，模型库和模型解析器算法，并设定了经济效益预测过程。研究结果被应用于“国家“十一五”规划资助计划”“快速增长和高产人工林生产和经营过程信息化关键技术的研究与应用”。并获得满意的结果。通过使用收获评估系统对杨树品种进行经济效益分析，农民和投资者可以预测未来的收入，并在造林方面做出决策。

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