Water Management in Agriculture

Water Management in Agriculture

The Effect of Climate Change and Different Planting Dates on Spring Wheat Blue water footprint in the Qazvin Plain

Document Type : Original Article

Authors
fatemeh borzoo 1
Ramezani Etedali, Hadi 2
Abbas Kaviani 3
1 1MSC student, Water Science and Engineering Department, Faculty of Agricultural and Natural Resources, Imam Khomeini International University, Qazvin, Iran.
2 Assistant Professor, Department. of Water Engineering, Imam Khomeini International University., Ghazvin., Iran
3 2 Assoc. Professor, Water Science and Engineering Department, Faculty of Agricultural and Natural Resources, Imam Khomeini International University, Qazvin, Iran.
Abstract
This research was conducted in the period from 2021 to 2100 in order to generate climate data using two sources of information, DKRZ and LARS-WG. In the period from 1961 to 2020, the daily data of minimum temperature, maximum temperature, precipitation (mm per day) and hours of sunshine (number of hours in one day and night) were obtained from Qazvin synoptic station. Since the 20-year period was suitable for the subsequent stages of the data, the data of the period from 1991 to 2020 was selected as the basic data. According to the results obtained from the climate conditions LARS-WG model and DKRZ database under release scenarios 4.5 and 8.5 for the planting dates of February 4, February 20, March 21 and April 4, in each 4 future period the average blue water footprint will decrease compared to the base period. On the planting date of March 6, for the climatic conditions obtained from the DKRZ databases under scenario 8.5 for the periods of 2040-2021, 2041-2060 and 2061-2080, it predicts an increase in the footprint of blue water compared to the base period, and in the period of 2081-2100 in the scenarios 4.5 and 8.5 the average blue water footprint will decrease compared to its value in the base period. The LARS-WG model for the planting date of March 6 under scenarios 8.5 and 4.5 reports a reduction in the blue water footprint compared to the base value.
Keywords
blue water footprint
LARS-WG
planting data
spring wheat
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