【摘要】 为研究气候因子对不同海拔地区兴安落叶松(Larix gmelinii)径向生长的影响，根据大兴安岭地区平均海拔高度(573 m)和天然林线分布状况，依据树木年代学原理选取高海拔(850 m)、中海拔(485 m)、低海拔(290 m)3个海拔地区的树芯，建立落叶松树轮宽度标准化年表，使用Mann-Kendall检验和小波分析方法将树轮宽度指数(RWI)与气候因子进行相关分析、冗余分析、多元逐步回归分析。结果表明：兴安落叶松径向生长在3个海拔地区显示出不同的周期性变化，气候对不同海拔梯度落叶松径向生长的影响存在显著差异。其中，低海拔梯度落叶松径向生长与当年10月份月最高气温呈显著负相关，与上一年9月份降水量及标准化降水蒸散指数、当年10月份标准化降水蒸散指数呈显著正相关；中海拔梯度落叶松径向生长与上一年9月份月平均气温及月最高气温、当年6、7、9月份月最高气温呈显著负相关，与上一年8月份及9月份标准化降水蒸散指数、当年6月份降水量及标准化降水蒸散指数呈显著正相关；高海拔梯度落叶松径向生长与上一年8月份及当年5月份月平均气温、月最高气温呈显著正相关，与上一年6、8月份及当年5、6、8月份月最低气温呈显著正相关。温度和降水共同影响大兴安岭地区的树木生长，低温是高海拔地区落叶松径向生长的主要限制因子，降水是中、低海拔地区落叶松径向生长的主要限制因子。更多还原

【Abstract】 To investigate the effects of radial growth of Larix gmelinii at different elevation, according to the average altitude(573 m) and the distribution of natural forest lines in the Greater Khingan Mountaitns region, by using climatological method of dendrochronology, we sampled tree cores at high altitude(850 m), middle altitude(485 m) and low altitude(290 m) to establish the standard chronologies of L. gmelinii ring width. Using Mann-Kendall test and wavelet analysis were used to analyze the correlation and redundancy between tree ring width index(RWI) and correlation analysis, redundancy analysis(RDA) and multiple stepwise regression analysis. The radial growth of L. gmelinii showed significant different periodic changes in three different altitudes and the response to climate was obviously different. The low altitude had a significant negative correlation with the monthly maximum temperature in October of the current year, and a significant positive correlation with the precipitation in September of the Previous year, and SPEI of the current October. The middle altitude was negatively correlated with the monthly mean temperature, monthly maximum temperature in September of Previous year, and the maximum temperature in June, July and September of the Current year, and a significant positive correlation with SPEI in August and September of last year, and precipitation in June of Previous year. The high altitude has a significant positive correlation with the monthly mean temperature and monthly maximum temperature in August and May of Previous year, and a significant positive correlation with the monthly minimum temperature and temperature in June and August of Previous year and in May, June and August of the Current year. Both temperature and precipitation affect tree growth in the Greater Khingan Mountaitns, low temperature is the limiting factor for L. gmelinii growth in high altitude, and precipitation is the main limiting factors for L. gmelinii growth in middle and low altitude.更多还原