论文部分内容阅读
根据东北地区树种分布资料和233个气象站资料,利用Holdridge生命地带分类系统计算了东北地区50种主要树种的Holdridge生命地带分类系统的年生物温度(BT)、可能蒸散(APE)、年降水量(PREC)和可能蒸散率(PER)。构建了Holdridge指标与树种分布的纬度、经度和海拔高度的回归模型,定量的分析了东北地区树种分布的气候规律。综合年生物温度(BT)和可能蒸散率(PER)两个气候指标将50种主要树种划分为8个水热指标类群,分别为寒温耐旱型、寒温湿润型,寒温潮湿型,中温耐旱型,中温湿润型,中温潮湿型,暖温耐旱型和暖温湿润型。
Based on the tree species distribution data and 233 weather station data in Northeast China, the Holdridge life belt classification system was used to calculate the annual mean temperature (BT), possible evapotranspiration (APE), annual precipitation (PREC) and possible evapotranspiration (PER). A regression model of Holdridge index and tree species distribution in latitude, longitude and altitude was constructed to quantitatively analyze the climatic rule of tree species distribution in Northeast China. According to the two climatic indexes of integrated annual temperature (BT) and potential evapotranspiration (PER), the 50 main tree species were divided into 8 hydrothermal index groups, namely cold temperature and drought resistance type, cold temperature and humid type, cold and humid type, Medium temperature and drought-resistant type, temperature type, humidity type, warm temperature and drought type and warm temperature type.