List of Articles Global warming

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  1 - The Effect of Climate Change on SoilOrganic Matter and Biological Activity
  Arash Mohammadzadeh Yaser Azimzadeh
  Climate change phenomenon is one of the most important global challenges for mankind in providing sufficient and healthy food for the ever-increasing world population. The leading factors of climate change, such as increasing temperature, changing precipitation patterns More

  Climate change phenomenon is one of the most important global challenges for mankind in providing sufficient and healthy food for the ever-increasing world population. The leading factors of climate change, such as increasing temperature, changing precipitation patterns, and increasing the frequency and intensity of weather events, affect soil characteristics, especially in the ecosystems of arid and semi-arid regions. These changes can directly affect the growth and production of crops. The amount of soil organic matter is one of the most important indicators of soil quality and health, which affects many physical, chemical and biological characteristics of soil and is directly and indirectly affected by climatic factors such as temperature and rainfall. On the other hand, the balance of input and output of organic carbon to the soil is effective on the amount of carbon dioxide in the atmosphere and thus on global warming and the climate change phenomenon. The results of many forecasts show that in arid and semi-arid regions, climate change will lead to an increase in temperature and a decrease in rainfall. Therefore, considering that the amount of organic matter in the soil decreases with the increase in temperature and decrease in humidity, it seems that the phenomenon of climate change will have adverse effects on the amount of soil organic matter and biological activity, and then on the production of crops in arid and semi-arid regions. Therefore, it is very important to use the necessary solutions to mitigate these adverse effects and adapt to the upcoming conditions. Mitigation refers to methods that lead to the reduction of greenhouse gas emissions, especially carbon dioxide; But the goal of adaptation is to mitigate the inevitable effects of climate change. Based on the results of various publications, compliance with the principles of the conservation agriculture system is considered one of the most important mitigation and adaptation solutions in dealing with the consequences of climate change in arid and semi-arid regions. Due to the fact that the climate change phenomenon is an inevitable event and its adverse effects and consequences in human life are felt more and more intense day by day, it is necessary for the management of soil resources to have the necessary foresight regarding the results of this phenomenon on the quality of the soil and the potential of producing agricultural products, especially in Arid and semi-arid areas should be considered. Manuscript profile
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  2 - Detection of the first frost of autumn and the last frost of spring with the climate change approach at Gorgan synoptic station
  Hossein Imani Pour Abdolreza Kashki mina firoozyazdi
  10.22034/aej.2019.672649
  Changes in the history of the first frost of autumn and the last frost in the spring could be a serious threat to gardeners and farmers. The purpose of this study is to know how this change will be in the future period (2015-2068) compared to the base period (1961-2014) More

  Changes in the history of the first frost of autumn and the last frost in the spring could be a serious threat to gardeners and farmers. The purpose of this study is to know how this change will be in the future period (2015-2068) compared to the base period (1961-2014) at Gorgan Station. For this purpose, daily data of the Gorgan Minimum Temperature Station was obtained at the observation period from the Golestan Meteorological Office. Then NCEP data, CanESM_RCP_26, RCP_45, RCP 85 were downloaded from Canada's Climate Change site, and using SDSM software, the minimum temperature data for the next period was generated for the three scenarios. Then, the date of the beginning and the end of the glacial to date of Julius was calculated and fitted with SMADA software with different statistical distributions and, using more suitable distributions, the probability of occurrence of freezing days was calculated. The results of this study indicate that the glacial period in the observation period is 75 days. it is also 46 days for the upcoming period in the optimistic scenario. It includes 39 days in the intermediate period and 31 days in the pessimistic scenario, which results in a significant decrease in the duration of the ice period and the increase of the period Growth of plants in the course of the future, which requires more vigilance of planners to deal with the destructive effects of climate change. Manuscript profile