Economic evaluation of agroecosystem services of saffron in Khorasan Razavi province
2018
Surur Khorramdel | Parviz Rezvani Moghaddam | Afsaneh Amin Ghafori
Monetary valuation of agroecoystem services makes them attractive for the society and policy makers should pay more attention to conservation of these services. In this study, the economic value of services as well as negative environmental externalities of saffron fields were estimated in the Khorasan Razavi province during 2015. Information was extracted from questionnaires collected from 75 fields. Using these data, economic values (such as O<sub>2</sub> production, food, biodiversity and tourism) together with environmental externalities (including greenhouse gas emission and N and P leakage) were computed based on international value of dollar. Based on the results of the study, the mean values of the agroecosystem services of saffron field such as O<sub>2</sub> production, food, biodiversity and cultural services were estimated to be 54.21×10<sup>6</sup>, 266.84×10<sup>6</sup>, 60.24×10<sup>6</sup>, 29.6×10<sup>6</sup> and 10.58×10<sup>6</sup> Rls ha<sup>-1</sup>.y<sup>-1</sup>, respectively. The shares of these services were up to 39, 35, 19 and 7 percent of total value, respectively. The ranges of environmental externalities such as greenhouse gas emission and N and P leakage were estimated to be -18.54×10<sup>6</sup> to -8.18×10<sup>6</sup> and -5.18×10<sup>6</sup> to -4.07×10<sup>6</sup> Rls ha<sup>-1</sup>.y<sup>-1</sup>. The mean value of the total agroecosystem services of saffron fields excluding externalities, were estimated to be 136.57×10<sup>6</sup> Rls ha<sup>-1</sup> y<sup>-1</sup>.
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