Investigation of hydro-climate parameters trend changes in Miankaleh Wetland, Mazandaran

Solaimani, Karim; Alavi, Seyedhossien; Shokrian, Fatemeh; Mokhtarpour, Esmaeil

doi:10.22034/hyd.2023.57490.1702

Document Type : پژوهشی

Authors

¹ Professor, Remote Sensing Centre, Sari Agricultural Sciences and Natural Resources University

² M.Sc. Student, Dept. of Watershed Management, Sari Agricultural Sciences and Natural Resources University,

³ Assistant Prof. Dept. of Watershed Management, Sari Agricultural Sciences and Natural Resources University,

⁴ Deputy Technical and Watershed Management Department of Natural Resources of Mazandaran-Sari province,

https://doi.org/10.22034/hyd.2023.57490.1702

Abstract

This study investigated the trend of hydroclimate parameters of the Miankaleh wetland using the Mann-Kendall test and Sen slope estimator. Temperature, precipitation, and evaporation parameters were used from the synoptic stations . Also, the discharge data were used from the hydrometric stations of Khalil Mahalleh, Tazeh Abad, Baghoo, and Vatana stations. The results of the Mann-Kendall test showed that the temperature in the Dashte-Naz station in spring and summer seasons has a significant increasing trend with 95% confidence and a significant decreasing trend in winter. Also, there is an increasing trend in Hashem Abad station, with a 95% confidence level in the spring and autumn seasons. Precipitation in Dashte-Naz station with a 95% confidence level has a decreasing and increasing trend, respectively. The most frequent trend changes in Dubai are related to Vatana station, which has a decreasing trend on an annual scale. Evaporation in Dashte-Naz station has a decreasing trend in the autumn and winter seasons and has an increasing trend in spring. Also, in Hashem Abad station, the evaporation rate in autumn has a decreasing trend. The Sen slope estimator method results showed that precipitation in Dashte-Naz station in December was -2.983, and on the annual scale, it is related to Hashem Abad station with -6.283. The highest monthly positive trend line slope of all parameters is related to August precipitation in Dashte- Naz station with a value of 3.20, and the highest annual scale is related to evaporation in Hashem Abad station with a value of 2.157.

Keywords

Main Subjects

watershed

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Investigation of hydro-climate parameters trend changes in Miankaleh Wetland, Mazandaran

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Volume 10, Issue 37 - Serial Number 37January 2024Pages 119-98

Volume 10, Issue 37 - Serial Number 37
January 2024
Pages 119-98