Surface runoff in Beasley Lake watershed: Effect of land management practices in a Lower Mississippi River Basin watershed
| Autor: | Martin A. Locke, Richard E. Lizotte, Lindsey M. W. Yasarer, Ronald L. Bingner, M. T. Moore |
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| Rok vydání: | 2020 |
| Předmět: |
Hydrology
geography geography.geographical_feature_category Watershed business.industry Drainage basin Land management Soil Science Row crop 04 agricultural and veterinary sciences 010501 environmental sciences 01 natural sciences Set-aside Agriculture 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Environmental science Conservation Reserve Program Surface runoff business Agronomy and Crop Science 0105 earth and related environmental sciences Nature and Landscape Conservation Water Science and Technology |
| Zdroj: | Journal of Soil and Water Conservation. 75:278-290 |
| ISSN: | 1941-3300 0022-4561 |
| DOI: | 10.2489/jswc.75.3.278 |
| Popis: | Several United States Department of Agriculture (USDA) conservation programs are promoting conversion of cropland to nonagricultural use, e.g., buffer establishment for wildlife habitat and Conservation Reserve Program (CRP). These areas set aside for nonagricultural use may serve as barriers to mitigate runoff within a watershed where agricultural activities are conducted. CRP and wildlife buffer areas were established in Beasley Lake watershed (BLW), Sunflower County, Mississippi, United States, in 2003 and 2006, respectively. The objectives of this study were to assess catchment runoff and runoff water quality through both measured data and model simulations from three scenarios of land management in BLW from 2011 to 2017: row crop with no edge-of-field buffer (Crop), row crop fields adjacent to wildlife buffers (CropBuff), and CRP. Measured data were collected at the field-scale from nine subcatchments. Median runoff from Crop sites was greater than that from CRP catchments (123 m3 ha−1 versus 39 m3 ha−1 across seasons and years). Median loads of suspended solid loads in runoff averaged 108 kg ha−1 for Crop compared to 42 kg ha−1 in CropBuff areas (across seasons and years). Similar trends were observed for median total Kjeldahl nitrogen (TKN) and total phosphorus (TP) loads in runoff: TKN 0.26, 0.18, and 0.07 kg ha−1; and TP 0.06, 0.06, and 0.02 kg ha−1 for Crop, CropBuff, and CRP, respectively. For both CRP and CropBuff, the proportion of soluble/fine particle ( |
| Databáze: | OpenAIRE |
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