Response of radial growth Chinese pine (Pinus tabulaeformis)to climate factors in Wanxian Mountain of He'nan Province
Tree-ring width standard chronology was developed by using the tree-ring cores of Chinese pine ( Pinus tabulaeformis) from Wanxian Mountain in south Taihang Mountain ranges, northern He'nan Province. Tree growth showed significantly negatively correlations with mean temperature in current June based on response function analyses. Radial growth patterns showed significantly positive correlations with precipitation in previous September and current May and the current spring ( March-May). To sum up, precipitation in current May or the current spring ( March-May) and temperature in current June are main affecting factors to the radial growth of Chinese pine (Pinus tabulaeformis) of the study region. As the PDSI is a direct measure of soil moisture availability, we analyzed correlations of tree rings with monthly PDSI data. All correlations were higher and significant at the 95% confidence level, relative to the correlations with temperature and precipitation. The PDSI-tree growth correlation peaks in May (0. 614) , followed by the correlations in April ( r = 0. 607) and April-May ( r = 0. 604) , and higher correlation in spring ( r = 0. 591) , these shows that combinations of temperature and precipitation are main limiting factors to radial growth of Chinese pine in the study region. The response results indicated similar climate-growth relationships for Chinese pine in northern China, particularly for the temperature of the early growing season. Moreover, the influence of precipitation and PDSI to Chinese pine had obviously advancing in schedule with the loess plateau and other northern China. This indicated potential linkages between different position of the Chinese pine growth and the summer monsoon advancement.
国家科技期刊平台
NSTL
万方数据
维普
