Application of the SEBAL method in water resources management in the Yellow River Delta of China
Application of the SEBAL method in water resources management in the Yellow River Delta of China
复制标题
SEBAL方法在中国黄河三角洲水资源管理中的应用
DOI：
10.5004/dwt.2010.1887
复制
发表时间：
2010-07
影响因子：
1.1
通讯作者：
Wei Jiahua
中科院分区：
文献类型：
--
作者：
Wang Xiaoyan;Zhang Changchun;Wei Jiahua
农田蒸散量是黄河三角洲地区水资源管理的重要指标，是农田灌溉用水的消耗量。由于地面能量平衡算法（SEBAL）方法需要较少的地面测量，并包括完整的能量平衡计算，该算法被用来估计蒸散作为一个组成部分的能量平衡在一个像素的基础上，在长三角。采用SEBAL方法，利用高级甚高分辨率辐射计和8幅覆盖长江三角洲的陆地卫星影像，估算了长江三角洲地区的日、月实际蒸散量（ETn）。通过从潜在蒸散量（ETp）中减去有效降水量，估算了灌溉地的作物净需水量（WRn）。结合数字作物图和WRn值，获得了长江三角洲地区的作物净需水量。灌溉作物的性能评估表明，水输送没有超过作物的需求，棉花和小麦的WRN小于灌溉需求。结果表明，SEBAL模型能够较准确地估算出长江流域的蒸散量a和蒸散量p，为长江流域水资源综合管理提供了重要的空间信息，为决策者制定合理的用水政策提供了依据。
Evapotranspiration (ET) from agricultural fields, a consumptive use of fresh water for irrigation, is an important factor in water resources management in the Yellow River Delta (YRD) of China. Because the Surface Energy Balance Algorithm for Land (SEBAL) methodology requires a less ground measurements and includes the complete energy balance calculation, the algorithm was used to estimate ET as a component of the energy balance on a pixel-by-pixel basis in the YRD. Advanced Very High Resolution Radiometer and eight Landsat images covering the YRD were used to estimate both daily and monthly actual ET (ET n ) with the SEBAL method. The net crop water requirements (WRn) for the irrigated land were also estimated by subtracting the effective precipitation from the potential evapotranspiration (ET p ). The volume of net crop water requirements was obtained for the YRD area jointly with the digital crop maps and WRn values. Assessment of the performance of irrigated crops revealed that water delivery did not exceed the crop requirements, and the WRn for cotton and wheat were smaller than the irrigation demand. The result confirmed that the SEBAL model can estimate the ET a and ET p with higher accuracy, which will be an important tool in integrated water resources management and can provide spatial information to help decision-makers improve the current water use policies in the YRD.
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DOI：
10.1023/a:1026507916353
发表时间：
2000-08
期刊：
Irrigation and Drainage Systems
影响因子：
--
作者：
M. G. Michael;W. Bastiaanssen
通讯作者：
M. G. Michael;W. Bastiaanssen
DOI：
--
发表时间：
1974
期刊：
--
影响因子：
--
作者：
M. G. Bos;J. Nugteren
通讯作者：
M. G. Bos;J. Nugteren
影响因子：
6.7
作者：
W. Bastiaanssen;L. Chandrapala
通讯作者：
W. Bastiaanssen;L. Chandrapala
影响因子：
6.7
作者：
K. Bandara
通讯作者：
K. Bandara
影响因子：
13.5
作者：
CHOUDHURY, BJ;AHMED, NU;DAUGHTRY, CST
通讯作者：
DAUGHTRY, CST