Hydrologic Impacts due to Changes in Conveyance and Conversion from Flood to Sprinkler Irrigation Practices
Hydrologic Impacts due to Changes in Conveyance and Conversion from Flood to Sprinkler Irrigation Practices
复制标题
运输方式的变化和从洪水到喷灌做法的转换造成的水文影响
DOI：
10.1061/(asce)0733-9437(2004)130:3(192
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发表时间：
2004
期刊：
影响因子：
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通讯作者：
L. Pochop
中科院分区：
文献类型：
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作者：
B. Venn;Drew W. Johnson;L. Pochop
当从洪水灌溉方法改为喷灌方法时，灌溉效率的提高有据可查;然而，与这种变化相关的对流域的其他影响尚不清楚。灌溉和输水方式的改变对流域水文的影响是本研究的重点。为了改善怀俄明州西部盐河流域的水资源利用和输送效率，灌溉方式从20世纪60年代末开始从漫灌改为喷灌，到20世纪70年代中期完成。根据水平衡，盐河的流量平均每年增加65.62百万立方米。回流时间也受到转换为喷灌的影响。5月和6月的流量分别增加了34%和50%，而8月和9月分别减少了15%和14%。这些变化可能与地下水储存量的减少相吻合。然而，对地下水位随时间变化的分析尚无定论。表面处理
Improvements in irrigation efficiency are well documented when changing from flood to sprinkler irrigation methods; however, other impacts to the watershed associated with this change are not well known. The resulting impacts to a river basin hydrology when irrigation and conveyance methods are changed are the focus of this study. In an attempt to improve water application and conveyance efficiencies in the Salt River Basin of western Wyoming, irrigation practices were changed from flood irrigation to sprinkler irrigation beginning in the late 1960s, with completion by the mid-1970s. Based upon a water balance, flow in the Salt River increased an average of 65.62 MCM/year. Return flow timing was also impacted by the conversion to sprinkler irrigation. Flows increased 34% in May and 50% in June, while decreasing 15 and 14% in August and September. These changes may have coincided with decreases in groundwater storage. However, analysis of changes in groundwater levels with time was inconclusive. Surface wa...