长白山过渡带红松和鱼鳞云杉径向生长对气候因子的响应  

Response of Pinus koraiensis and Picea jezoensis var. komarovii to climate in the transition zone of Changbai Mountain,China

作　　者：高露双[1] 王晓明[1] 赵秀海[1] 

机构地区：[1]北京林业大学省部共建森林培育与保护教育部重点实验室,北京100083

出　　处：《植物生态学报》2011年第1期27-34,共8页Chinese Journal of Plant Ecology

基　　金：林业公益性行业科研专项基金(200904022和20100400204);国家"十一五"科技支撑项目(2006BAD03A0804)资助

摘　　要：利用树轮生态学方法,研究了长白山阔叶红松林和暗针叶林过渡带优势树种红松(Pinus koraiensis)和鱼鳞云杉(Picea jezoensis var.komarovii)的生长特征及其与气候因子的关系,以期揭示气候响应关系的种间差异性。结果表明,红松和鱼鳞云杉年平均径向生长量与生理年龄显著相关,红松先于鱼鳞云杉达到最大年生长量,且红松年平均生长速率显著高于鱼鳞云杉(p<0.001);红松和鱼鳞云杉对气候的响应存在差异,红松与7月份的月平均温度和降水显著正相关,而鱼鳞云杉与5月平均温度显著正相关,与5月降水显著负相关。响应面分析进一步证实,红松生长主要与生长季温度和降水相关,而生长季初期的降水是限制鱼鳞云杉生长的主要原因。全球变暖有利于红松径向生长,红松种群有向高海拔上升的可能。Aims Our objective was to reveal the climate sensitivity ofPinus koraiensis and Piceajezoensis var. komarovii. Methods We used dendroecological methods to analyze growth characteristics and responses to climate of Pinus koraiensis and Pieea jezoensis var, komarovii, dominant species in the transition of broad-leaved Korean pine forest and dark coniferous forest in Changbai Mountain, China, to reveal their climate sensitivity. Important findings Radial growth of both species was significantly correlated with the age. Maximum annual growth occurred earlier in Pinus koraiensis than Picea jezoensis var. komarovii. Annual growth rate was signifi- cantly higher in Pinus koraiensis than Picea jezoensis var. komarovii （p 〈 0.001）. Response to climate also dif- fered. Radial growth ofPinus koraiensis was significantly positively correlated with monthly mean temperature in July and precipitation in September （p 〈 0.05）. However, radial growth in Piceajezoensis var. komarovii was sig- nificantly positively related to monthly mean and maximum temperature in May and was negatively related to May precipitation. Results from response surface analysis suggested that radial growth was mainly controlled by the temperature and precipitation of the growing season, but precipitation during the early growing season was the most important factor for growth of Picea jezoensis var. komarovii. Global wanning will favor radial growth of Pinus koraiensis, and this species will be able to extend to higher elevation.

关 键 词：气候因子 树轮生态学 鱼鳞云杉 红松 

分 类 号：Q948[生物学—植物学]