Soil suitability index identifies potential areas for groundwater banking on agriculturallands

Soil suitability index identifies potential areas for groundwater banking on agriculturallands
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土壤适宜性指数确定了农田地下水库的潜在区域

DOI：
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发表时间：
2015
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影响因子：
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通讯作者：
M. Walkinshaw
M. Walkinshaw
中科院分区：
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文献类型：
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作者：
A. O’Geen;M. B. Saal;H. Dahlke;D. Doll;R. Elkins;A. Fulton;G. Fogg;T. Harter;J. Hopmans;C. Ingels;F. Niederholzer;S. Solis;P. Verdegaal;M. Walkinshaw

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在许多农业地区，地下水的抽取长期超过自然补给 在加州。补充地下水的一种常见方法-当地表水可用时 - 是故意淹没一片开阔地，让水渗透到含水层。 然而，适合这种补给的开阔土地很少。农业洪水 休耕或休眠期的土地有可能增加地下水的补给 这是一个很大的问题，但这种方法还没有得到很好的研究。利用土壤、地形 和作物类型，我们开发了一个空间上明确的地下水适宜性指数 在加州的所有农业区的土地补给。我们确认了360万 全州范围内拥有大量农业用地，具有优秀或良好的地下水潜力 充电该指数提供了关于地下水 在农业用地上进行补给可能是可行的。各种各样的机构， 在实施这种做法之前，还必须解决基础设施和其他问题 广泛实施。
Groundwater pumping chronically exceeds natural recharge in many agricultural regions in California. A common method of recharging groundwater — when surface water is available — is to deliberately flood an open area, allowing water to percolate into an aquifer. However, open land suitable for this type of recharge is scarce. Flooding agricultural land during fallow or dormant periods has the potential to increase groundwater recharge substantially, but this approach has not been well studied. Using data on soils, topography and crop type, we developed a spatially explicit index of the suitability for groundwater recharge of land in all agricultural regions in California. We identified 3.6 million acres of agricultural land statewide as having Excellent or Good potential for groundwater recharge. The index provides preliminary guidance about the locations where groundwater recharge on agricultural land is likely to be feasible. A variety of institutional, infrastructure and other issues must also be addressed before this practice can be implemented widely.