Applicability and Sensitivity of Field Hydrology Modeling by the Soil Plant Air Water (SPAW) Model Under Changes in Soil Properties
نویسندگان
چکیده
Highlights Changes to soil properties and precipitation scenarios significantly affect the water balance in agro-hydrology. SPAW model is sensitive simulated runoff infiltration, but it has limitations responding compaction organic matter change. Increasing (1% 5%) did not or infiltration silty sandy loam soil. Low generates lower (%) higher infiltration. Abstract. Agricultural practices can change amount of generated from a landscape. Modeling results could be different than expected if web survey other commonly used remote sensing applications are as inputs without site verification. This study assessed applicability sensitivity Soil-Plant-Air-Water (SPAW) Model for simulating components various physical properties, cover crop, weather variables. Soil profiles 135 combinations were developed with three classes (sandy loam, silt clay), five levels (1%, 2%, 3%, 4%, 5%), (low, medium, high), topsoil layer thicknesses (7.6 cm, 11.4 15 cm). Also, crop treatments by modifying surface evapotranspiration during non-growing season. Finally, two regimes considered (Iowa City, IA, high Brookings, SD, low precipitation) simulate In total, 810 run, resulting over 300 million data points. confirmed that texture, bulk density, thickness (p<0.01) influence generation percentage based on criterion. Interestingly, had no significant response changing 1% 5%. simulation demonstrates estimations influenced due agricultural conservation (ACPs) or, conversely, events. Inputs models must account these changes rather relying only historical inputs. Keywords: practices, Conservation agriculture, Field hydrology, Infiltration, Runoff, SPAW.
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ژورنال
عنوان ژورنال: Journal of the ASABE
سال: 2023
ISSN: ['2769-3287', '2769-3295']
DOI: https://doi.org/10.13031/ja.15306