Determining of the Oak forests’ role on protecting water quality based on the service function in Tang-e Shool, Fars

Document Type : Research Article

Authors

1 Department of forestry and forest economy, faculty of natural resources, university of Tehran, Karaj, Iran

2 department of reclamation of arid region, faculty of natural resources, university of Tehran, Karaj

3 Department of forestry and forest economy, faculty of natural resources, university of Tehran, Karaj

4 Department of Agricultural Economics, Faculty of Agriculture, University of Shiraz, Shiraz

5 Department of forestry, Faculty of Natural Resources, University of Tehran, Karaj

6 Fars Agriculture and Natural Resources Researches Center, Shiraz

Abstract

Surface water is an important source for drinking water, which are under environmental and anthropogenic stresses. There are several evidences confirming that forest cover positively affects water quality. However, little quantitate information is available regarding the impacts of forest canopy cover on purification of drinking water quality in Iran. To achieve this, we selected several forested catchments with different ground canopy cover in Tang-e-Shool forest located in the Fars province and Water Quality Index (WQI) were measured by using physicochemical parameters. The production function of water quality service was also estimated by taking into account other characteristics of the forested micro catchments. Our results showed that the WQI in 30% crown cover is in a good quality scale. Also with an increase of 1% in the crown cover, WQI will improve by 0.8% and an increase of 1% in the area of the micro catchment causes a decline of 0.14 percent of WQI. Also, Aghajari Formation has a negative effect on WQI compare to Asmari. According to this study increasing the crown cover to protect water quality by up to 30%, will minimize treatment costs and the waters provided by these forests can be used for human drinking purposes.

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References

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Iranian journal of Ecohydrology
Volume 5, Issue 3
October 2018
Pages 843-853

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History

  • Receive Date: 22 December 2017
  • Revise Date: 13 February 2018
  • Accept Date: 12 May 2018

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