摘要
受作物本身生理机制以及近地层气象因子非线性、非平稳化随机变化的影响,参考作物腾发量在时间尺度上具有自相似性特点。基于此,以分形原理为理论框架,研究了参考作物腾发量时间尺度自相似结构,寻求了参考作物腾发量时间无标度区间。将此理论运用于韶山灌区,取得了满意结果,对解析参考作物腾发量时间规律具有重要理论和实际意义。
Influenced by crops＇ physiological mechanism and the unsteady, non-linear stochastic variation of meteorological factors, reference evapotranspiration is characterized by its stochasticism. This thesis, by means of the fractal theory, has researched into the temporal fractal features of reference evapotranspiration and concluded that on the temporal scale there exists a dimensionless interzone where the reference evapotranspiration has the feature of self-similarity. Finally, those theories are applied to Shaoshan Irrigation Areas and some satisfactory results are obtained, which facilitates a further analysis of the reference evapotranspiration evolutionary law.
出处
《灌溉排水学报》
CSCD
北大核心
2006年第5期9-13,共5页
Journal of Irrigation and Drainage
基金
国家"973"重点项目(2003CB415206)
中山大学青年教师科研启动基金
关键词
参考作物腾发量
时间尺度
分形特征
无标度区间
reference evapotranspiration
the temporal scale
fractal features
the dimensionless interzone
