分析影响蒸发转化区域划分的因素
Mostafa Sadeghzadeh1, Jalal Shiri2,3, Sepideh Karimi1,4
1Department of Water Engineering; Faculty of Agriculture, University of Tabriz, Tabriz, Iran.
概括
参考蒸发转化 (ETo) 对水资源管理和农业至关重要. 这项研究发现,ETo在伊朗各地逐渐增加,具体方法显示可靠的空间和时间模式.
科学领域:
- 水文学和气候学
- 农业科学 农业科学
背景情况:
- 参考蒸发转化 (ETo) 对于水资源规划,作物生产和了解气候变化影响至关重要.
- 精确估计ETo需要可靠的空间和时间评估.
研究的目的:
- 通过340个气象站的数据,分析伊朗ETo的空间和时间模式.
- 评估ETo估计和分类的不同方法.
主要方法:
- 用于不确定性评估的积理论和用于时间趋势分析的修改Kendall测试.
- 常规最小平方 (OLS) 用于空间建模和合用于时空分类.
- 修改后的Hargreaves (MHGR) 和MODIS方法与粮农组织Penman-Monteith (FPM-56) 标准进行比较.
主要成果:
- OLS方法有效地模拟了空间ET与气候参数的关系 (R2 = 0.985).
- 使用指数变量图的合证明是季节性和年度ETo分类的最佳方法.
- MHGR和MODIS的方法与FPM-56非常相匹配,表明伊朗各地ETo的逐渐增加.
结论:
- 这项研究成功地建模和分类了伊朗的ETo模式.
- 根据数据的可用性,MHGR和MODIS被验证为伊朗ETo估计的合适替代方案.
- 调查结果突显出ETo的显著增长趋势,这与区域水资源管理和农业规划有关.
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