Official reports indicate that the number of forest fires and areas affected by fire in Serbia is increasing. Changes in temperature and precipitation, important factors in fire behaviour, were determined by comparison between the standard climatological period (1961–1990) and the period 1981–2010. The study processed and compared the data from 26 meteorological stations on the territory of Serbia. In order to determine the risk of fires, values of the Lang precipitation factor and Ångström index are calculated. It is found that the mean values of temperature significantly increased during the second period at all stations in Serbia. The small values of the precipitation factor are recorded during summer, but also in the spring months. Research has shown that an increase in air temperature and reduction of precipitation in the examined period has a great influence of the possibility of fire occurrence. It is concluded that there is a higher fire danger risk during the summer months in Serbia. It is found that eastern and southern Serbia are particularly vulnerable to forest fires because of small values of the Lang precipitation factors.

中文翻译：

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气温和降水对塞尔维亚森林火灾风险的影响

官方报告显示，塞尔维亚森林火灾的数量和受火灾影响的地区正在增加。通过比较标准气候时期（1961-1990 年）和 1981-2010 年时期，确定了温度和降水的变化，这是火灾行为的重要因素。该研究处理并比较了塞尔维亚境内 26 个气象站的数据。为了确定火灾风险，计算了 Lang 降水因子和 Ångström 指数的值。发现塞尔维亚所有站点的温度平均值在第二阶段显着增加。降水因子的小值记录在夏季，但也记录在春季。研究表明，调查期间气温升高和降水减少对火灾发生的可能性有很大影响。得出的结论是，塞尔维亚夏季月份存在较高的火灾危险风险。研究发现，由于朗降水因子的值很小，塞尔维亚东部和南部特别容易受到森林火灾的影响。