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Influence of climatic factor of changes in forest fire danger and fire season length in Turkey
Environmental Monitoring and Assessment ( IF 3 ) Pub Date : 2021-01-03 , DOI: 10.1007/s10661-020-08800-6
Mertol Ertugrul , Tugrul Varol , Halil Baris Ozel , Mehmet Cetin , Hakan Sevik

In contrast to the expectations of an increase in annual fire activity and the severity of fire season due to climate change and large fires, which have been occurring in recent years, a downtrend has been identified in fire activity in many studies conducted for the whole of Europe in recent years. Similarly, in Turkey, according to the General Directorate of Forestry statistics, while there is an increase in the number of annual fires, the burnt area has a downtrend pattern. In this study, fire activity and climate data statistics for Turkey were examined along with the fire season length and severity. The results obtained conform with the studies conducted in places from Spain at the westernmost part of Mediterranean Europe to Israel at the easternmost part of the Mediterranean. Considering the changes in temperatures, temperature rise of 2 to 3 °C was detected at all stations in the study area. No decrease was observed in the average temperatures at any of the stations within the study period between 1940 and 2018. On the other hand, the precipitation trend varied according to the stations. Although there have been increases in precipitation in Fethiye, Isparta, and Marmaris since 1960, the decrease in precipitation by 132 mm in Afyon since 1970 and the decrease in precipitation by 137 mm in Bodrum since 1940 are attention-grabbing. These stations are followed by Izmir station with 66 mm and Cesme station with 37 mm of decrease, despite being smaller decreases. In the study, the long-term (1940–2018) data of the meteorological stations discussed within the study, the Canadian Fire Weather Index (FWI) and the Fine Fuel Moisture Code (FFMC) values were calculated. According to the FWI results used in determining the severity and length of fire season on the coastline of Turkey from the northern Aegean to Antalya, the likelihood of large fires decreased by about 52% in 2018 compared to 1970. This decrease in FWI value indicates that the fire severity is reduced. The specified decrease in fire severity also explains the reason of the decrease in the burnt area that occurred over the years in Turkey. No significant change was observed in the FFMC values indicating the possibility of human-induced fires between 1970 and 2018.



中文翻译:

气候因素对土耳其森林火灾危险性和火灾季节长度变化的影响

与近年来发生的由于气候变化和大火而导致的年度火灾活动增加以及火灾季节的严重性的预期相反,在整个2009年进行的许多研究中,火灾活动呈下降趋势。近年来的欧洲。同样,在土耳其,根据林业总局的统计数字,虽然每年发生的火灾数量有所增加,但被烧面积呈下降趋势。在这项研究中,检查了土耳其的火活动和气候数据统计,以及火季的长度和严重程度。获得的结果与从在地中海欧洲最西端的西班牙到地中海最东端的以色列的地方进行的研究一致。考虑到温度的变化,在研究区域的所有站点中,发现温度升高了2至3°C。在1940年至2018年的研究期内,任何一个站点的平均温度都没有下降。另一方面,降水趋势随站点的变化而变化。尽管费特希耶,伊斯巴达和马尔马里斯的降水量自1960年以来一直在增加,但阿菲永的降水量自1970年以来减少了132 mm,博德鲁姆的降水量却从1940年开始减少了137 mm。这些站之后是Izmir站(减少了66毫米),而Cesme站减少了37毫米,尽管减少幅度较小。在这项研究中,研究中讨论的气象站的长期(1940–2018)数据,计算了加拿大火灾天气指数(FWI)和精细燃料水分代码(FFMC)值。根据用于确定土耳其从爱琴海北部到安塔利亚的海岸线的火灾季节的严重程度和持续时间的FWI结果,与1970年相比,2018年大火的可能性降低了约52%。FWI值的下降表明:降低火灾严重性。特定的火灾严重程度降低还可以解释土耳其多年来发生的烧毁面积减少的原因。FFMC值未观察到显着变化,表明1970年至2018年之间人为引发火灾的可能性。与1970年相比,2018年大火的可能性降低了约52%。FWI值的降低表明火灾的严重性有所降低。特定的火灾严重程度降低还可以解释土耳其多年来发生的烧毁面积减少的原因。FFMC值未观察到显着变化,表明1970年至2018年之间人为引发火灾的可能性。与1970年相比,2018年大火的可能性降低了约52%。FWI值的降低表明火灾的严重性有所降低。特定的火灾严重程度降低还可以解释土耳其多年来发生的烧毁面积减少的原因。FFMC值未观察到显着变化,表明1970年至2018年之间人为引发火灾的可能性。

更新日期:2021-01-03
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