Evaluation of climate change in northern Iran during the last four centuries by using dendroclimatology

Gholami, Vahid; Jolandan, Maryam Ahmadi; Torkaman, Javad

doi:10.1007/s11069-016-2667-4

Cited by 24 publications

(15 citation statements)

References 54 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In general, the increasing air temperature on one side and declining precipitation on the other side have caused a noticeable decrease in the I DM aridity index in Iran. The results of Tabari et al (2014), Gholami et al (2017) and Mianabadi et al (2019) are consistent with the ndings of this study regarding decreasing trends in the I DM aridity index in Iran.…”

Section: Trend Analysissupporting

confidence: 91%

Spatiotemporal analysis of air temperature indices, aridity conditions, and precipitation in Iran

Sadeqi

Kahya

2021

Theor Appl Climatol

View full text Add to dashboard Cite

Global warming has become a major threat to life on the earth, and recognizing its impacts can de nitely be useful in controlling and mitigating its adverse effects. In this study, time series variations in air temperature indices (frost days, T min , T max , T mean , T minmin , T maxmax , T soil-min ), De Martonne aridity index (I DM ) and total precipitation were investigated using a long-term meteorological data of 31 synoptic stations throughout Iran. The results indicated that more than 94% of the stations had increasing trend in T mean , in which about 70% were signi cant at the 0.05 level. The average increase in T min was calculated approximately 1.7 times higher than T max and also the increase in T minmin was about 2.5 times higher than T maxmax . Our ndings showed that, abrupt changes in T min and T max mostly observed in the 1990s were upward in 87% of all the stations. Increase in annual T mean at a rate of 0.3 ºC per decade and reduction of 5 mm per decade in total annual precipitation led to decrease in the I DM aridity index by 0.35 per decade in Iran. The intensity of air temperature increase was higher in tropical regions than in cold regions. Trend analysis in the partial series before and after a change point showed that the trends in T mean before the change point were negative, but turned to positive afterwards in some stations mostly located in the northwestern cold and mountainous regions of the country. Our results revealed that the climate in Iran, in general, has become warmer and drier in the past 60 years and continuation of the current global warming trend will exacerbate this problem in the future. HighlightsIran has become warmer and drier over the last six decades.Global warming has caused the average annual T min to experience three signi cant abrupt upward changes in their time series at some stations.The time series trend of some indices before the change point was different than their trend afterwards.The east coast of the Caspian Sea has shifted from Mediterranean region to semi-arid region due to climate change.Tropical regions were warmed more intense than cold regions.

show abstract

Section: Trend Analysissupporting

confidence: 91%

Spatiotemporal analysis of air temperature indices, aridity conditions, and precipitation in Iran

Sadeqi

Kahya

2021

Theor Appl Climatol

View full text Add to dashboard Cite

show abstract

“…Aridity Index (AI), which expresses the relationship between available moisture by precipitation and the capacity to compensate potential water demand, is another important variable in simulating past climatic data (GHOLAMI et al, 2017). In this study, although AI presented a correlation pattern similar to precipitation, we found that in certain months it better described the annual growth pulses, both positive and negative.…”

Section: Discussionmentioning

confidence: 69%

THE INFLUENCE OF COMPETITION IN THE GROWTH-CLIMATE RELATIONSHIP OF Pinus taeda: A CASE STUDY IN SOUTHERN BRAZIL

Schons

Costa

Finger

2019

View full text Add to dashboard Cite

Influência da competição na relação crescimento-clima de Pinus taeda: um estudo de caso no sul do Brasil. Entender como o clima afeta o crescimento das árvores é essencial para avaliar os impactos das mudanças climáticas nas florestas. Além disso, árvores em ambientes mais competitivos parecem responder ao clima de maneira diferente do que árvores em ambientes menos competitivos. Uma importante ferramenta para investigar as relações entre crescimento e ambiente é a datação dos anéis de crescimento. Este estudo teve como objetivo caracterizar os fatores climáticos que afetam o crescimento de Pinus taeda no sul do Brasil em dois tipos distintos de povoamentos: árvores de crescimento aberto e árvores sob competição. Nossa hipótese é que as árvores sob competição apresentam respostas mais vulneráveis à variabilidade climática do que as árvores de crescimento aberto. Foram usados trados de incremento para acessar o crescimento de longo prazo através dos anéis de crescimento. Correlação de Pearson foi aplicada para comparar o crescimento radial com dados climáticos mensais e anuais. As cronologias geradas para os dois ambientes apresentam padrões de crescimento similares ano a ano. No entanto, as árvores sob competição são mais sensíveis sob condições climáticas limitadas do que as árvores de crescimento aberto. A disponibilidade de água durante a atual primavera / verão foi a principal restrição climática para o crescimento de P. taeda na região, seguido por altas temperaturas durante o verão, provavelmente devido a restrições fotossintéticas. O artigo fornece informações adicionais sobre fatores climáticos que contribuem para modelos de crescimento e relata um importante campo de pesquisa, considerando o planejamento do manejo florestal no futuro.

show abstract

“…Unfortunately, the process of land use change and forest destruction is to be continued in northern Iran. Moreover, climate changes will affect the forest growth in the study area (Gholami et al 2017). Therefore, we will observe undesired conditions of the forest areas in northern Iran due to an increase in runoff generation and flood hazard.…”

Section: Discussionmentioning

confidence: 99%

The influence of deforestation and anthropogenic activities on runoff generation

Khaleghi¹

2017

J. For. Sci.

View full text Add to dashboard Cite

Khaleghi M.R. (2017): The influence of deforestation and anthropogenic activities on runoff generation. J. For. Sci., In recent decades, due to rapid human population increases and in its results, destructive effects of anthropogenic activities on natural resources have become a great challenge. Land use and vegetation are important factors in soil erosion and runoff generation. This study was performed to assess the effects of different amounts of forest cover on the control of runoff and soil loss in the Talar basin, which is located in Mazandaran province, using a runoffrainfall model, geographical information system (GIS) and remote sensing (RS) to determine the hydrologic effects of deforestation on the Talar watershed (north of Iran). A runoff-rainfall model has been presented using GIS (HECGeoHMS) and hydrologic model (HEC-HMS). Land use changes (deforestation) and anthropogenic activities (roads and impervious surfaces development) were evaluated using RS techniques and satellite images. We used the Soil Conservation Service and Curve Number methods for hydrograph simulation and runoff estimation, respectively. First, a model was performed and optimized. Afterward, the optimized model was evaluated by other six events of floods (model validation). According to the obtained results, the runoff generation potential has been increased in the Talar watershed due to deforestation during the last forty years. Land use changes cause an increase in runoff volume and flood peak discharge.

show abstract

Evaluation of climate change in northern Iran during the last four centuries by using dendroclimatology

Cited by 24 publications

References 54 publications

Spatiotemporal analysis of air temperature indices, aridity conditions, and precipitation in Iran

Spatiotemporal analysis of air temperature indices, aridity conditions, and precipitation in Iran

THE INFLUENCE OF COMPETITION IN THE GROWTH-CLIMATE RELATIONSHIP OF Pinus taeda: A CASE STUDY IN SOUTHERN BRAZIL

The influence of deforestation and anthropogenic activities on runoff generation

Contact Info

Product

Resources

About