التفاصيل البيبلوغرافية
| العنوان: |
Evaluation of BMPs in Flatland Watershed with Pumped Outlet. |
| المؤلفون: |
Shukla, Rituraj, Rudra, Ramesh, Daggupati, Prasad, Little, Colin, Khan, Alamgir, Goel, Pradeep, Prasher, Shiv |
| المصدر: |
Hydrology (2306-5338); Feb2024, Vol. 11 Issue 2, p22, 21p |
| مصطلحات موضوعية: |
CONSERVATION tillage, COVER crops, WINTER wheat, NO-tillage, SOIL moisture, WATERSHEDS |
| مصطلحات جغرافية: |
ONTARIO |
| مستخلص: |
The effectiveness of existing and potential best management practices (BMPs) to cropped lands in the Jeannette Creek watershed (Thames River basin, Ontario, Canada) in reducing P loads at its pumped outlets was assessed using the Soil and Water Assessment Tool (SWAT). Existing BMPs consisted of banded, incorporated, and variable phosphorus (P)-rate application, conservation tillage, cover crops, and vegetative buffer strips. Potential BMPs consisted of banded P application, no-till, and a cover crop following winter wheat. Two separately delineated sub-watersheds, J1 and J2, characterized by a flat topography and distinct pumped outlets, were selected for analysis. Despite challenges in delineation, the SWAT model was successfully set up to assess the impact of BMPs in reducing P loads in these sub-watersheds. Each BMP was systematically removed, and the resulting simulated P loads were compared with the baseline scenario. Compared to cover crops or vegetative buffer strips, the implementation of conservation tillage and no-till, along with altering the mode of P application, offered superior effectiveness in reducing the P load. On average, the annual reduction in total P (Ptot) loads under existing BMPs was 9.2% in J1 and 11.3% in J2, whereas, under potential BMPs, this reduction exceeded 60% in both watersheds. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
Complementary Index |