Effectiveness Evaluation of Precipitation Enhancement for Water Storage
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Abstract:
By using of a nonrandomized experiment scheme and the data of rainfall and inflow of Gutian Reservoir between 1960 and 2007, the effectiveness evaluation method of precipitation enhancement effectiveness for water storage was studied based on the drainage area rainfall, inflow and runoff coefficients of the reservoir. After the reasonable precipitation enhancement operation over the Gutian Reservoir drainage area of 1350 km2, the precipitation of drainage area increased by 18.87%, with absolute value increased 22.4 mm, total rainfall 30.24 million m3, runoff coefficient of the reservoir 9.31%，inflow 29.95%，absolute increment 5.17 m3/s，the total inflow 13.59395 million m3. The precipitation enhancement operation improved the ecoenvironment, heightened soil moisture, and enhanced the runoff coefficient. The relative increment of inflow is larger than that of area rainfall. The economic benefit of waterstorage precipitation enhancement operation is larger than that of droughtresistant precipitation enhancement operation.
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Supported by:Beijing E-Tiller Technology Development Co., Ltd.
Supported by:Beijing E-Tiller Technology Development Co., Ltd.