Effects of some watershed characteristics on water yield in the West Black Sea Region of northern Turkey

This paper presents the effect of some watershed characteristics on water yield based on two-year measurements (2015-2016) realized at 29 watersheds. Although, there are several factors affecting the runoffs, we tried to eliminate some and focused on watershed characteristics by choosing the watersh...

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Autores principales:	Zengin,Hayati, Özcan,Mehmet, Degermenci,Ahmet Salih, Citgez,Tarik
Lenguaje:	English
Publicado:	Universidad Austral de Chile, Facultad de Ciencias Forestales 2017
Materias:	watershed size form factor water yield regression model Turkey
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-92002017000300005
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spelling	oai:scielo:S0717-920020170003000052018-03-01Effects of some watershed characteristics on water yield in the West Black Sea Region of northern TurkeyZengin,HayatiÖzcan,MehmetDegermenci,Ahmet SalihCitgez,Tarik watershed size form factor water yield regression model Turkey This paper presents the effect of some watershed characteristics on water yield based on two-year measurements (2015-2016) realized at 29 watersheds. Although, there are several factors affecting the runoffs, we tried to eliminate some and focused on watershed characteristics by choosing the watersheds as near as to each other in the same hydro-climatic zone. These are relatively small watersheds (8.6-449.3 ha) at the mountainous and forested areas around Düzce city, Turkey. Elevation of most watersheds, which is effective on precipitation, is above 1,000 m and covered by snow in winter. Regression models between water yield or runoff coefficient based on water yield/precipitation ratio and some watershed characteristics can be important to estimate the amount of water and manage the forest for its hydrologic function. In this study, the effect of watershed area, form factor, mean slope, drainage density, elevation, circularity and elongation ratios on water yield and runoff coefficient was analyzed by multiple linear regression analyses. While there is not a significant relation between runoff coefficient and watershed characteristics, we constructed a significant regression model for estimating water yield depending on watershed characteristics. Watershed size, elevation, form factor and elongation ratios are found as effective variables on water yield. When other variables (ratio of circularity, mean slope, drainage density) were added, adjusted R² and significance of the model was decreased. Results showed that some watershed characteristics have a significant effect on water yield, and equations based on these characteristics can be used in forest management or policy making in determining the priority of watersheds for water production.info:eu-repo/semantics/openAccessUniversidad Austral de Chile, Facultad de Ciencias ForestalesBosque (Valdivia) v.38 n.3 20172017-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-92002017000300005en10.4067/S0717-92002017000300005
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	watershed size form factor water yield regression model Turkey
spellingShingle	watershed size form factor water yield regression model Turkey Zengin,Hayati Özcan,Mehmet Degermenci,Ahmet Salih Citgez,Tarik Effects of some watershed characteristics on water yield in the West Black Sea Region of northern Turkey
description	This paper presents the effect of some watershed characteristics on water yield based on two-year measurements (2015-2016) realized at 29 watersheds. Although, there are several factors affecting the runoffs, we tried to eliminate some and focused on watershed characteristics by choosing the watersheds as near as to each other in the same hydro-climatic zone. These are relatively small watersheds (8.6-449.3 ha) at the mountainous and forested areas around Düzce city, Turkey. Elevation of most watersheds, which is effective on precipitation, is above 1,000 m and covered by snow in winter. Regression models between water yield or runoff coefficient based on water yield/precipitation ratio and some watershed characteristics can be important to estimate the amount of water and manage the forest for its hydrologic function. In this study, the effect of watershed area, form factor, mean slope, drainage density, elevation, circularity and elongation ratios on water yield and runoff coefficient was analyzed by multiple linear regression analyses. While there is not a significant relation between runoff coefficient and watershed characteristics, we constructed a significant regression model for estimating water yield depending on watershed characteristics. Watershed size, elevation, form factor and elongation ratios are found as effective variables on water yield. When other variables (ratio of circularity, mean slope, drainage density) were added, adjusted R² and significance of the model was decreased. Results showed that some watershed characteristics have a significant effect on water yield, and equations based on these characteristics can be used in forest management or policy making in determining the priority of watersheds for water production.
author	Zengin,Hayati Özcan,Mehmet Degermenci,Ahmet Salih Citgez,Tarik
author_facet	Zengin,Hayati Özcan,Mehmet Degermenci,Ahmet Salih Citgez,Tarik
author_sort	Zengin,Hayati
title	Effects of some watershed characteristics on water yield in the West Black Sea Region of northern Turkey
title_short	Effects of some watershed characteristics on water yield in the West Black Sea Region of northern Turkey
title_full	Effects of some watershed characteristics on water yield in the West Black Sea Region of northern Turkey
title_fullStr	Effects of some watershed characteristics on water yield in the West Black Sea Region of northern Turkey
title_full_unstemmed	Effects of some watershed characteristics on water yield in the West Black Sea Region of northern Turkey
title_sort	effects of some watershed characteristics on water yield in the west black sea region of northern turkey
publisher	Universidad Austral de Chile, Facultad de Ciencias Forestales
publishDate	2017
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-92002017000300005
work_keys_str_mv	AT zenginhayati effectsofsomewatershedcharacteristicsonwateryieldinthewestblacksearegionofnorthernturkey AT ozcanmehmet effectsofsomewatershedcharacteristicsonwateryieldinthewestblacksearegionofnorthernturkey AT degermenciahmetsalih effectsofsomewatershedcharacteristicsonwateryieldinthewestblacksearegionofnorthernturkey AT citgeztarik effectsofsomewatershedcharacteristicsonwateryieldinthewestblacksearegionofnorthernturkey
_version_	1718444234934059008

Effects of some watershed characteristics on water yield in the West Black Sea Region of northern Turkey

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