华山松树木年轮对气候响应的模拟分析

MODELLING ANALYSIS OF HUASHAN PINE GROWTH RESPONSE TO CLIMATE

采用树木年轮生长模型，从细胞尺度对华山松在不同时期的树木生长状况，包括早材和晚材的细胞大小等年轮结构变化进行了模拟。所建立的细胞大小年表对气候的响应函数结果，揭示出华山松的生长主要受生长季中４～７月份以及滞后一年降水的影响，而温度只是在生长季节开始的４月份起限制作用。利用气候资料对华山松的细胞大小及变化趋势的模拟结果表明，它与实测值十分接近。

By employing the tree-growth model, the relationship between the cell size of treering and climate for Huashan pine from the Qinling Mts is studied. The cell sizes ofearly wood,late wood have been measured and modelled using the climate data for 37years。 The modelled cell sizes of Huashan pine and its evolution coincide greatly withthe observed one。 Response functions of the measured cell size chronologies to climateindicate that the growth of Huashan pine is mainly effected by the precipitation ofcurrent growing season from April to July and of the prior year. The effect oftemperature on cell size is shown only in April with a positive correlation。