伏牛山森林植被资源对气候变化的响应分析

Analysis of the Response of Forest Vegetation Resources to Climate Change in Funiu Mountain

利用伏牛山地区国家基本气候观测站卢氏站1991—2020年的气象和林业部门的观测资料,进行伏牛山森林植被资源对气候变化的响应分析。结果表明,伏牛山森林植被生长季始期主要集中在3—4月份,生长季末期主要集中在9—10月份,生长季长度主要集中在5—7月份。伏牛山森林植被生长季始期提前,生长季末期推迟,生长季长度呈延长趋势。伏牛山森林植被生长季始期受2月和3月份平均气温影响最大,即春季气温升高导致生长季始期提前,其中:3月份平均气温升高对生长季始期提前的影响最大。降水对生长季始期影响作用具有较大的时间和空间差异。植被生长季末期主要受9月份降水和平均气温的影响,9月份气温升高或者降水增加都能导致生长季结束期推迟。

Using meteorological data from Lushi Station,a national basic climate observation station in the Funiu Mountain region,from 1991 to 2020,and observation data from forestry departments,the response of forest vegetation resources to climate change in Funiu Mountain was analyzed.The results showed that the beginning of the forest vegetation growth season in Funiu Mountain was mainly in March and April,the end of the growth season was mainly in September and October,and the growth season was mainly from May to July.From the analysis of temperature and precipitation data from Lushi Station in the past 30 years,it can be seen that the beginning of the forest vegetation growth season in Funiu Mountain is earlier,the end of the growth season is delayed,and the length of the growth season shows an extended growing trend.The growth season of forest vegetation in Funiu Mountain is most affected by the average temperature in February and March,that is,the increase in spring temperature leads to an earlier start of the growth season,with the increase in average temperature in March having the greatest impact on the earlier start of the growth season.The impact of precipitation on the beginning of the growth season has significant temporal and spatial differences.The end of the vegetation growth season is mainly affected by precipitation and average temperature in September,and an increase in temperature or precipitation in September can lead to a delay in the end period.