新疆伊犁南部山区树木径向生长对积雪变化的响应  

Response of Tree Radial Growth to Snow Cover Change in Southern Ili Mountains,Xinjiang

作　　者：杨蕾 秦莉[1] 刘可祥 张同文[1] 张瑞波[1] YANG Lei;QIN Li;LIU Kexiang;ZHANG Tongwen;ZHANG Ruibo(Institute of Desert Meteorology,China Meteorological Administration,Key Laboratory of Tree-ring Physical and Chemical Research,China Meteorological Administration,Xinjiang Laboratory for Tree-ring Ecology,Urumqi 830002,China)

机构地区：[1]中国气象局乌鲁木齐沙漠气象研究所,中国气象局树木年轮理化研究重点实验室,新疆树木年轮生态实验室,新疆乌鲁木齐830002

出　　处：《沙漠与绿洲气象》2022年第1期78-86,共9页Desert and Oasis Meteorology

基　　金：国家自然科学基金(41805130,41975110);新疆维吾尔自治区重点实验室开放课题(2019D04002);新疆维吾尔自治区区域协同创新专项(2021E01022);新疆维吾尔自治区天山青年计划(2020Q026);天山雪松计划(2019XS12);2022年气象行业标准制修订及标准预研究项目计划(B-2022-023)。

摘　　要：根据伊犁南部山区10个采样点的树轮宽度年表与气象资料的相关普查,研究发现,伊犁南部山区树木径向生长整体与气温响应不显著,生长季之前的降水对雪岭云杉径向生长有重要影响,尤其是冬季积雪。树木径向生长与主要积雪参数呈显著正相关关系。其中,伊犁地区西段QST、ZMC树轮年表与当年1、2月的最大积雪深度相关性最好,相关系数分别达到0.353(p<0.01,n=55)、0.393(p<0.01,n=55);在空间尺度上,树木径向生长对冬季降水和最大积雪深度的响应均表现出自西向东逐渐减弱的趋势。该研究从时空演变特征上分析了伊犁南部山区气候和积雪变化对树木径向生长的影响。We developed 10 tree-ring chronologies from mountain areas in southern Ili,Xinjiang,and analyzed the relationship between tree-ring width and meteorological data. The study showed that there was no significant correlation between the radial growth of Schrenk spruce(Picea schrenkiana Fisch.et Mey)and temperature. However,the precipitation before the growing season ha an important effect on the radial growth especially snowfall in winter. There was a significant positive correlation between the radial growth of Schrenk spruce and main snow parameters. And the maximum snow depth had a significant positive correlation with the QST and ZMC chronology in the western part of the study region in January and February,respectively,and the correlation coefficients were 0.353(p<0.01,n=55)and0.393(p<0.01,n=55). The response of tree radial growth to winter precipitation and maximum snow depth show a gradual decreasing trend from west to east in the spatial scale. The study comprehensively analyzed the spatiotemporal influence of climate and snow cover changes on the radial growth in the southern mountain areas of Ili.

关 键 词：伊犁南部山区 树木年轮 积雪变化 天山 雪岭云杉(Picea schrenkiana Fisch.et Mey) 

分 类 号：P343[天文地球—水文科学]