کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10223343 | 1701024 | 2018 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Nitrate-N load reduction measured in a central Iowa restored oxbow
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
بوم شناسی، تکامل، رفتار و سامانه شناسی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
This short communication presents new data collected from a tile-fed oxbow site in north-central Iowa and reports on the quantification of NO3-N load reductions using a mass balance approach. Using improved monitoring equipment deployed at the site in 2017, including a continuously-reading nitrate sensor, a NO3-N budget for the oxbow was developed to estimate annual and monthly load reductions occurring in the reconstructed oxbow. Daily NO3-N input was primarily from two drainage tiles and concentrations in the oxbow ranged from <0.2 to 3.5â¯mg/l. Based on daily mass balance, the oxbow retained 42.3â¯kg of NO3-N, or 0.21â¯gâ¯Nâ¯mâ2â¯dâ1, and the NO3-N retention efficiency was 35.4%. Removal efficiencies in early spring and late summer and fall were much higher than late spring and early summer. Based on mass load reductions, the effectiveness of oxbows for N load reductions is greatest when oxbows receive greater N loads from tile drainage compared to N loads delivered from flood pulses.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ecological Engineering - Volume 124, 1 December 2018, Pages 19-22
Journal: Ecological Engineering - Volume 124, 1 December 2018, Pages 19-22
نویسندگان
Keith E. Schilling, Keegan Kult, Anthony Seemon, Karen Wilke, Christopher S. Jones,