Wyniki wyszukiwania - BazTech

Ograniczanie wyników

Powiadomienia systemowe

Sesja wygasła!

Znaleziono wyników: 2

Liczba wyników na stronie

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: małe rzeki

Sortuj według:

Ogranicz wyniki do:

The effect of maintenance works to physical and chemical conditions of small rivers in agricultural areas

Brysiewicz Adam, Czerniejewski Przemysław, Bonisławska Małgorzata, Dąbrowski Jarosław

Ecological Chemistry and Engineering. S

2022

Vol. 29, nr 1

39--49

Abiotic and biotic bounty of riparian waters may be affected by inadequate maintenance works. Improper planning and execution of maintenance works cause changes to hydrological and hydrochemical condition of water in small rivers, affecting biocenose of riverbeds by modifying the taxonomic composition of organisms inhabiting the regulated river section. Five (5) rivers were subject to studies - Plonia, Mysla, Tywa, Rurzyca, and Wardynka (Odra river basin), which were monitored before and after maintenance works consisting in desilting, mowing and removal of aquatic plants. This study examined hydrological (mean depth and width of small rivers, speed and flow), physical and chemical parameter of water (temperature, pH, O2, N-NO3, N-NH4, P-PO4) before and after dredging of selected rivers. Obtained results and resulting statistical analysis demonstrated increase in hydrological indices - depth, width, speed and flow. Among other physical and chemical properties that significantly increased following completion of maintenance works, were O2 and NH4. NO3 concentration and temperature dropped, but not statistically significant. Changes in hydrological and hydrochemical properties of waters caused by maintenance works may affect biodiversity of the regulated river sections, including changes in composition of ichthyofauna species.

Wykorzystanie walorów krajobrazowych cieków w małych miastach regionu łódzkiego

Agajew M., Wycichowska B.

Przestrzeń i Forma

2015

nr 23/2

209--224

Artykuł analizuje sposób zagospodarowania terenów dolin małych rzek w celu wykorzystania atrakcyjności tych obszarów. Pozytywny wpływ rzek lub zbiorników wodnych na krajobraz miasta jest niezaprzeczalny, szczególnie, gdy dotyczy dużych rzek w skali kraju, dających możliwość obcowania z walorami zarówno estetycznymi, krajobrazowymi jak i przyrodniczymi. Natomiast w przypadku małych cieków, ich potencjał jest nie dostatecznie wykorzystany.

The paper concerns the development of areas of small river valleys in order to use their attractiveness. A positive influence of rivers or water reservoirs on the town landscape is indisputable; it concerns especially the biggest rivers in the country which give opportunities to enjoy and take advantage of the landscape, aesthetic and natural values. However, in a case of small watercourses, their potential is not sufficiently used.