摘要
以大兴安岭地区3个不同纬度地区的兴安落叶松为研究对象,建立不同纬度兴安落叶松年轮宽度年表;探索1967—2005年间,不同纬度气候因子变化规律,对气候因子和年轮宽度年表进行相关性分析。结果表明:1967—2005年间,大兴安岭不同纬度地区温度均显著上升,降水量未呈现出显著性变化;1927—2007年间,高纬度兴安落叶松树木径向生长显著增加,与此相反,中纬度和低纬度地区兴安落叶松径向生长变化不明显;温度是影响兴安落叶松径向生长的主要因子,降水变化对兴安落叶松径向生长的影响较小;高纬度地区气候变暖后,降水量的下降抑制了该地区兴安落叶松的径向生长。
We used Larix gmelinii at three different latitudes in Daxing＇an Montains to build the chronology tree-ring width at different latitudes,explored the change regulation of climate factor at different latitude in 1967-2005,and then conducted a correlation analysis between climate factor and tree-ring width.The temperature showed a significant increasing trend at different latitudes in Daxing＇an Montains in 1967-2005,but the precipitation did not show a significant change at all latitudes.The standard chronology of high latitude showed the significant increasing trend of trees growth in 1927-2007,the growth of mid-latitudes and low latitudes area did not change significantly over the entire time.The temperature was the main factor affecting tree growth than precipitation.With the increase of climate warming,the tree ring growth was suppressed by reduced precipitation in high latitude region.
出处
《东北林业大学学报》
CAS
CSCD
北大核心
2015年第3期10-13,22,共5页
Journal of Northeast Forestry University
关键词
兴安落叶松
径向生长
气候变化
温度
降水量
Larix gmelinii
Width gorth
Climate change
Temperature
Precipitation
