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Effects of vegetation cover and slope length on nitrogen and phosphorus loss from a sloping land under simulated rainfall

100%

Qian J. , Zhang L.-P. , Wang W.-Y. , Liu Q.

Polish Journal of Environmental Studies

2014

tom 23

nr 3

In order to evaluate the effects of different slope lengths (1, 2, 3, 4, and 5 m) and different vegetation coverage ratios (20%, 45%, 60%, and 90%) on the mechanisms of nutrient loss and runoff producing processes, we have conducted 14 simulated rainfall experiments. The results show that N and P loss are decided by the concentration and the runoff volume, but when the amounts of N and P in topsoil are small, their loss content mostly depends on runoff volume. Dissolved nitrogen is the main form in the nitrogen loss, while nitrate nitrogen is the main component in dissolved nitrogen, but the proportion in the total nitrogen gradually decreases with slope length increasing or with the increase of vegetation cover; the main form of phosphorus losses is particulate phosphorus, and the excessive sediment-bound nutrient loss released into water might cause secondary pollution of an aquatic environment.

Effect of land use on total phosphorus loss in selected locations

100%

Ciml J. , Pecenka J. , Moravcova J. , Lechner P. , Kalisek J.

Acta Scientiarum Polonorum. Formatio Circumiectus

2015

tom 14

nr 1

The study focuses on how land use in the selected location affects the amount of phosphorus in the watershed. Defines the basic concepts of this and related issues. The monitored value is total phosphorus and description of the measuring apparatus. The resulting data are arranged in tables and graphs and results are compared with standards of Czech norms (CSN) and other similar studies.

Przedmiotem pracy było zbadanie, jak wykorzystanie terenu w wybranej lokalizacji wpływa na ilość fosforu w dziale wodnym. Praca definiuje podstawowe pojęcia w tym i pokrewnych tematach. Opisuje monitorowaną ilość fosforu całkowitego oraz aparaturę pomiarową. Uzyskane wyniki są podane w formie tabel i wykresów w odniesieniu do standardów podawanych przez czeskie normy (CSN), a także przez inne podobne badania.

Prediction of storm-related sediment-associated contaminant loads in a watershed scale

84%

Noor H. , Fazli S. , Alibakhshi S. M.

International Journal of Ecohydrology and Hydrobiology

2012

tom 12

nr 3

Environmental constraints of phosphorus management in agriculture

84%

Leinweber P.

Nawozy i Nawożenie

2002