Study on Characteristic of Rainfall Infiltration in TypicalFarmland Soil in the Lower Reach of Yangtze River

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Plateau Meteorology ›› 2008, Vol. 27 ›› Issue (增刊) : 175-182.

Study on Characteristic of Rainfall Infiltration in TypicalFarmland Soil in the Lower Reach of Yangtze River

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Abstract

The rainfall infiltration were simulated based on the principle of water balance introduced Smith′s infiltration model, by experimented data of artificial rainfallin typical farmland inYangtzeriver Delta region, to find the rule of soil rainfall infiltration. The results indicated the rainfall infiltration intensity by Smith′s model calculated was consistent with the experimental results, the correlation determination coefficient(R2) was >0.81, the standard error(SE)was ≤0.08 mm·min-1. The infiltration intensity in high flow period in farmland increases with rainfall intensity, with the decreases of the soil moisture, with the decrement of soil texture. The coefficientof rainfall infiltration was middle loam >heavy loam, lower soil moisture>higher soil moisture, less rainfall intensity>bigger rainfall intensity.

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YangtzeRiver Delta r / Typical soil on farm / Characteristicof rai

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. Study on Characteristic of Rainfall Infiltration in TypicalFarmland Soil in the Lower Reach of Yangtze River. Plateau Meteorology. 2008, 27(增刊): 175-182

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