Chin J Plan Ecolo ›› 2016, Vol. 40 ›› Issue (1): 24-35.DOI: 10.17521/cjpe.2015.0216
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YU Jian1,2, XU Qian-Qian3, LIU Wen-Hui4, LUO Chun-Wang1, YANG Jun-Long5, LI Jun-Qing1, LIU Qi-Jing1,*
Online:
2016-01-31
Published:
2016-01-28
Contact:
Qi-Jing LIU
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# Co-first authors
YU Jian,XU Qian-Qian,LIU Wen-Hui,LUO Chun-Wang,YANG Jun-Long,LI Jun-Qing,LIU Qi-Jing. Response of radial growth to climate change for Larix olgensis along an altitudinal gradient on the eastern slope of Changbai Mountain, Northeast China[J]. Chin J Plan Ecolo, 2016, 40(1): 24-35.
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URL: https://www.plant-ecology.com/EN/10.17521/cjpe.2015.0216
采样点 Sampling sites | 海拔 Altitude (m) | 纬度 Latitude (N) | 经度 Longitude (E) | 样芯数 Number of cores | 时间长度 Time span (a) |
---|---|---|---|---|---|
低海拔 Low altitude | 1 448 | 42.07° | 128.26° | 107 | 273 |
高海拔林线内 Upper altitude below timberline | 1 931 | 42.06° | 128.08° | 81 | 131 |
高海拔林线外 Upper altitude above timberline | 1 990 | 42.01° | 128.09° | 51 | 108 |
Table 1 Description of sampling sites
采样点 Sampling sites | 海拔 Altitude (m) | 纬度 Latitude (N) | 经度 Longitude (E) | 样芯数 Number of cores | 时间长度 Time span (a) |
---|---|---|---|---|---|
低海拔 Low altitude | 1 448 | 42.07° | 128.26° | 107 | 273 |
高海拔林线内 Upper altitude below timberline | 1 931 | 42.06° | 128.08° | 81 | 131 |
高海拔林线外 Upper altitude above timberline | 1 990 | 42.01° | 128.09° | 51 | 108 |
统计特征 Statistic characters | 低海拔 Low altitude | 高海拔林线内 Upper altitude below timberline | 高海拔林线外 Upper altitude above timberline |
---|---|---|---|
公共区间 Common intervals | 1882-2010 | 1946-2006 | 1969-2008 |
平均值 Mean | 0.997 | 0.974 | 0.954 |
平均敏感度 Mean sensitivity | 0.19 | 0.28 | 0.29 |
标准偏差 Standard deviation | 0.18 | 0.24 | 0.24 |
一阶自相关 First order autocorrelation | 0.10 | -0.01 | -0.06 |
树间相关系数 Correlation between trees | 0.42 | 0.57 | 0.54 |
信噪比 Signal-to-noise ratio | 30.90 | 40.28 | 28.89 |
样本总体代表性 Expressed population signal | 0.97 | 0.98 | 0.97 |
第一主成分方差解释量 Variation in first eigenvector (%) | 44.19 | 58.30 | 56.07 |
Table 2 Statistics of ring-width chronologies and common interval analysis
统计特征 Statistic characters | 低海拔 Low altitude | 高海拔林线内 Upper altitude below timberline | 高海拔林线外 Upper altitude above timberline |
---|---|---|---|
公共区间 Common intervals | 1882-2010 | 1946-2006 | 1969-2008 |
平均值 Mean | 0.997 | 0.974 | 0.954 |
平均敏感度 Mean sensitivity | 0.19 | 0.28 | 0.29 |
标准偏差 Standard deviation | 0.18 | 0.24 | 0.24 |
一阶自相关 First order autocorrelation | 0.10 | -0.01 | -0.06 |
树间相关系数 Correlation between trees | 0.42 | 0.57 | 0.54 |
信噪比 Signal-to-noise ratio | 30.90 | 40.28 | 28.89 |
样本总体代表性 Expressed population signal | 0.97 | 0.98 | 0.97 |
第一主成分方差解释量 Variation in first eigenvector (%) | 44.19 | 58.30 | 56.07 |
低海拔 Low altitude | 高海拔林线内 Upper altitude below timberline | 高海拔林线外 Upper altitude above timberline | |
---|---|---|---|
低海拔 Low altitude | 1 | ||
高海拔林线内 Upper altitude below timberline | 0.595 0* | 1 | |
高海拔林线外 Upper altitude above timberline | 0.543 1 | 0.889 4** | 1 |
Table 3 Correlation coefficients of residual chronology of Larix olgensis
低海拔 Low altitude | 高海拔林线内 Upper altitude below timberline | 高海拔林线外 Upper altitude above timberline | |
---|---|---|---|
低海拔 Low altitude | 1 | ||
高海拔林线内 Upper altitude below timberline | 0.595 0* | 1 | |
高海拔林线外 Upper altitude above timberline | 0.543 1 | 0.889 4** | 1 |
Fig. 3 Correlation analysis of residual chronology for Larix olgensis in relation to monthly climatic factors in different elevations. *, p < 0.05; C, data of current year; P, data of previous year.
Fig. 4 Response function analysis of residual chronology for Larix olgensis in relation to monthly climate factors at different elevations. *, p < 0.05; C, data of current year; P, data of previous year.
Fig. 5 Redundancy analysis calculated for residual chronologies of Larix olgensis at different elevations (dash vectors) and monthly meteorological elements (solid vectors) for the period 1959-2009. Only significant climate factors are shown. The longer the vector the more important is the climate factor. The correlation between the variables is illustrated by the cosine of the angle between the two vectors. Vectors pointing nearly the same direction indicate a high positive correlation, while the opposite directions have a high negative correlation, whereas vectors perpendicular to each other represent near-zero correlation. PDSI, Palmer drought severity index.
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