Human beings are among the creatures that rely on the services provided by ecosystems. During the last several decades, the human beings have demanded to increase the use of these services and water production services are no exception. The human demand for water is increasing day by day and there is a great pressure on the supply of ecosystem water supply services. According to global reports, it is predicted that drought periods with heavy rains will be prolonged, which will lead to an uncertain future of water availability. Water production means the sum of the long-term average annual flow of rivers and the feeding of underground water tables by precipitation. Meanwhile, by increasing the production of organic matter, plants increase soil stability and rainwater retention. The amount of water production depends on the geographical and natural conditions of the region in terms of the amount of rainfall and human activities in terms of changes in the land uses in the region. Change of use through fragmentation and reduction of vegetation, industrialization and urbanization activities, the impact of climate change on this level cannot be ignored. In this research, using the Invest model, the impact of land use on the supply of this service was eva‎luated in Bagh Shadi protected area of Yazd province. The results at the level of use of the high amount of forest runoff production amounting to 117285 cubic meters per hectare indicated that this area has a large area so that more than 80% of the area has forest cover. At the same time, the type of cover and the rate of evaporation and transpiration also play an important role in this amount. In general, the less the cover or the less it is destroyed due to man-made activities, the more the runoff will increase suddenly. Considering that the population living in this area mainly lives and has an economy dependent on nature, with the loss of vegetation in the upstream and sloping pastures, most of the rainfall appears as runoff and puts the local people at risk of the consequences of floods to give

10/20/2022 12:00:00 AM

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