Computational Ecology and Software, 2024, 14(2): 77-101
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Tracking the impact of climate factors on vegetation dynamics across the Alashan Plateau semi desert ecoregion

SeyedOmid Reza Shobairi1, Samira Hemmati Roudbari2, Qirghizbek Ayombekov1, Hadis Sadeghi3, BehnamAsghari Beirami4, MehranAlizadeh Pirbasti5
1Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China
2Department of Soil Science, Faculty of Agriculture, University of Zanjan, Iran
3Climate Research Institute, Atmospheric Science and Meteorological Research Center, Iran
4Department of Photogrammetry and Remote Sensing, K. N. Toosi University of Technology, Tehran, Iran
5Department of Remote Sensing, Hekmat Institute of Higher Education, Qom, Iran

Received 4 October 2023;Accepted 10 November 2023;Published online 20 November 2023;Published 1 June 2024

Several studies have demonstrated global climate change, which has happened worldwide; it significantly impacts terrestrial ecosystems. Studying vegetation phenology can provide insight into the impact of climate changes on ecosystems. Alashan Plateau Semi-Desert is located between the Tibetan Plateau and the Gobi Desert and has an arid continental climate. This area consists of highlands, and the sensitivity of natural vegetation to temperature and climate change is very high. This study aims to identify climate trends in forest cover indices using weather (meteorological) data from 1982 to 2019 across the Alashan Plateau Semi-Desert. Based on this, 13 variables that affect climate change were selected, and the possible effect of climate factors on vegetation indices was predicted using MATLAB. The results showed that over the past 38 years, three forest cover indices, LAI, FAPAR, and NDVI, decreased by about 6-10, 6-7, and 19-20 percent correspondingly, and it can be assumed that this decline is due to climate change. In general, it can be said that climate changeshave adverse effects in hot and dry regions and highlands. With the current climate change trends, such as increasing temperature and decreasing rainfall, reducing the dynamics of vegetation indices in these areas can be seen dramatically.

Keywords NDVI;LAI;FAPAR;climate drivers;ecoregions;Alashan Plateau.

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