| 基于系统动力学的黑河中游地区FAO Penman Monteith模型评价研究 |
| |
| 引用本文： | 梁友嘉,徐中民.基于系统动力学的黑河中游地区FAO Penman Monteith模型评价研究[J].草业科学,2011,28(1):18-26. |
| |
| 作者姓名： | 梁友嘉 徐中民 |
| |
| 摘 要： | 研究利用系统动力学软件STELLA构建FAO Penman Monteith模型，进行系统动力学建模与生态建模相结合的尝试。研究发现，实际太阳辐射模拟值与GIS空间插值结果基本吻合，变化趋势一致；潜在蒸散发量估算值与SEBS模型估算值接近，基于时间序列的变化趋势基本相同，较好地反映了逐日蒸散发量的时间异质性；敏感性分析发现潜在蒸散发量对反照率、回归常数、辐射系数和研究区纬度值（取值范围为37°39°）变化不敏感；系统动力学在分析复杂系统动态、模拟不同条件下系统因子之间相互作用以及响应过程中具有明显优势；STELLA本身强大的建模功能及友好图形界面在生态学及相关研究领域中有广阔前景；多学科方法、多时空尺度、多物理过程相耦合的研究将是以后该领域研究的重点和趋势之一。
|
| 关 键 词： | 黑河中游地区 系统动力学 FAO Penman Monteith模型 |
Estimation of FAO Penman Monteith model in the middle reaches of Heihe River based on System Dynamics |
| |
| LIANG You-Jia,XU Zhong-Min.Estimation of FAO Penman Monteith model in the middle reaches of Heihe River based on System Dynamics[J].Pratacultural Science,2011,28(1):18-26. |
| |
| Authors: | LIANG You-Jia XU Zhong-Min |
| |
| Abstract: | The system dynamics software STELLA was used to built a FAO Penman Monteith model and the system dynamics modeling and the ecological models was firstly combined in this study. This study showed that the simulation value of the actual solar radiation (Rs) was accord with the spatial interpolation by ArcGIS. The estimated value of potential evapotranspiration(ET0) was consistent with the simulated value of SEBS model, indicating that the evapotranspiration changes of time series reflected the heterogeneity of every day evapotranspiration. The sensitivity analysis of STELLA showed that ET0 was insensitive to alpha, As, Bs and area latitude (range from 37°-39°). This study suggested that the system dynamics change showed the great advantages in the analysis of complex systems dynamics and simulation interaction between the system factors and the response process under different conditions, that STELLA’s powerful features and good graphical interface could be applied in the ecology modeling and related research, and that the multidisciplinary approach, more temporal and spatial scale and multi phase coupling of physical processes would be the focus in this field and an important trend in the future. |
| |
| Keywords: | The middle reaches of Heihe River system dynamics FAO Penman Monteith model |
|
| 点击此处可从《草业科学》浏览原始摘要信息 |
| 点击此处可从《草业科学》下载免费的PDF全文 |
