SUNDIAL: A PC‐Based System for Simulating Nitrogen Dynamics in Arable Land
SUNDIAL: A PC‐Based System for Simulating Nitrogen Dynamics in Arable Land
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SUNDIAL：基于 PC 的耕地氮动态模拟系统
DOI：
10.2134/agronj1996.00021962008800010008x
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发表时间：
1996
期刊：
影响因子：
2.1
通讯作者：
T. Addiscott
中科院分区：
文献类型：
--
作者：
Jo U. Smith;N. Bradbury;T. Addiscott
SUNDIAL（Simulation of Nitrogen Dynamics In Arable Land）是一个用户友好的基于PC的Rothamsted氮周转模型版本。它包括一个菜单驱动的系统，允许农业顾问，即使只有最少的计算经验，输入特定领域或农场的细节，并模拟N的周转。所涉及的过程由一组参数化的零阶和一阶方程描述。增加一种新的作物参数计算工具，可以对新作物的粗略但即时的模拟进行瞬时参数估计，对SUNDIAL中使用的表达式进行图形可视化，将参数化表达式与实验测量进行比较，并通过将各个表达式拟合到测量数据或通过迭代地调整参数以改善模拟结果与土壤的拟合来进一步细化参数以及作物N和15 N测量。SUNDIAL中以图形形式显示各种输出的设施使其特别有助于研究不同管理策略对可耕地农业中氮循环的影响。图形工具包括资产负债表、图形图、饼图和流程图。
SUNDIAL (SimUlation of Nitrogen Dynamics In Arable Land) is a user-friendly, PC-based version of the Rothamsted Nitrogen Turnover Model. It comprises a menu-driven system that allows agricultural advisers, even with minimal computing experience, to enter details of a particular field or farm and simulate N turnover. The processes involved are described by a set of parameterized zero and first-order equations. The addition of a novel facility for calculating crop parameters enables instantaneous estimation of parameters for rough but immediate simulations of a new crop, graphical visualization of the expressions used in SUNDIAL, comparison of the parameterized expressions with experimental mesurements, and further refinement of parameters by fitting individual expressions to measured data or by iteratively adjusting parameters to improve the fit of simulated results to soil and crop N and 15 N measurements. The facilities in SUNDIAL for displaying the various outputs in graphical form make it particularly useful for examining the impact of different management strategies on the N cycle in arable agriculture. Graphical facilities include balance sheets, graphical plots, pie charts, and flow diagrams.