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首页> 外文期刊>Journal of the American Water Resources Association >ESTIMATING CROP WATER USE VIA REMOTE SENSING TECHNIQUES VS. CONVENTIONAL METHODS IN THE SOUTH PLATTE RIVER BASIN, COLORADO
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ESTIMATING CROP WATER USE VIA REMOTE SENSING TECHNIQUES VS. CONVENTIONAL METHODS IN THE SOUTH PLATTE RIVER BASIN, COLORADO

机译：通过遥感技术估算作物用水量。科罗拉多州南普拉特河流域的常规方法

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摘要

We compared two methods of estimating crop water consumption to assess whether remote sensing techniques provide consumptive use (CU) estimates commensurate with conventional methods. Using available historical satellite and meteorological data, we applied Mapping EvapoTranspiration at high Resolution using Internalized Calibration (METRIC) to 317,455 ha in the South Platte basin, in northeastern Colorado, for the 2001 irrigation season. We then compared these derived CU estimates with values calculated by using the Colorado Water Conservation Board's South Platte Decision Support System StateCU model. Evaluating the data by irrigation ditch service area, we disaggregated the output to allow for comparison by service area size, crop type, irrigation method, water supply source, and water availability. We concluded that METRIC is a suitable alternative to StateCU in the South Platte basin and could help to identify areas with inhibited crop growth or deficit irrigation practices. In addition, METRIC could be used as a complement to StateCU to refine StateCU model parameters, allowing for more accurate estimates of crop water shortages and groundwater recharge associated with irrigation delivery and application.
机译：我们比较了两种估算作物耗水量的方法，以评估遥感技术是否提供与常规方法相当的消费量（CU）估算。利用可用的历史卫星和气象数据，我们在2001年灌溉季节的科罗拉多州南普拉特盆地中，使用内部校准（METRIC）对高分辨率的蒸发蒸腾量进行了测绘，测绘了317,455公顷。然后，我们将这些导出的CU估计值与通过使用科罗拉多州水利保护局的南普拉特决策支持系统StateCU模型计算出的值进行比较。通过对灌溉沟渠服务区的数据进行评估，我们对输出进行了分类，以便根据服务区面积，作物类型，灌溉方法，供水源和可用水量进行比较。我们得出的结论是，METRIC是南普拉特盆地中StateCU的合适替代品，可以帮助确定作物生长受阻或灌溉不足的地区。此外，METRIC可以作为StateCU的补充来完善StateCU模型参数，从而可以更准确地估算与灌溉输送和应用相关的农作物缺水和地下水补给。

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