摘要
选择生长在柴达木盆地东缘地区哈里哈图青海云杉生长上限的样本作为研究对象,通过TREE-RING生态机理模型,从树木的生理角度模拟了树木的生长。结果表明:(1)模型中调试的参数基本符合哈里哈图地区青海云杉的生长状况,模型达到了较好的拟合效果。细胞个数模拟序列和实测序列之间的相关系数达到0.51,通过了0.001显著性水平检验;轮宽指数中两者的相关系数达到0.46,通过了0.01显著性水平检验。(2)哈里哈图青海云杉生长平均开始于第129天,即5月9日;停止于第298天,即10月28日,生长期共169天,基本符合当地树木生长的实际起始时间。(3)通过宽、窄轮的形成分析发现,限制该地区树木生长的主要气候因子为树木生长前期的土壤湿度。本研究的开展为高原地区气候因子的重建提供了生理背景支持。
Using the upper line of Picea Crassifolia in Halihatu region,on the east edge of Qaidam Basin and TREE-RING Eco-Physiological model,the growth of the Picea Crassifolia is simulated and the physiological response mechanism is analyzed in this study.The obtained conclusions are as follows：（1） the simulated results are well and the correlation of cell number between the measured and the modeled is 0.51,which pass the significance level at 0.001;the correlation between the wide and narrow ring width is 0.46,and pass the significance level at 0.01.（2） The growth of Picea Crassifolia in Halihatu starts averagely in 129th day,that is on May 9;stops in 298th day,also on October 28.The vegetal periodie is altogether 169 days;（3） Through the analysis of wide and narrow rings formation,it is found that the main climate factor limiting tree growth in this area is the soil moisture condition in the early period of the growing season.
出处
《高原气象》
CSCD
北大核心
2010年第2期349-358,共10页
Plateau Meteorology
基金
国家自然科学基金项目(30300053)
中国科学院地理科学与资源研究所项目(CXIOG-A05-12)共同资助
