• 研究报告 •

### 不同纬度阔叶红松林红松径向生长对气候因子的响应

1. (1东北林业大学森林植物生态学教育部重点实验室, 哈尔滨 150040; 2齐齐哈尔大学, 黑龙江齐齐哈尔 161006)
• 出版日期:2016-05-18

### Response of  radial growth of Pinus koraiensis in broad-leaved Korean pine forests with different latitudes to climatical factors.

LIU Min1,2, MAO Zi-jun1*, LI Yue2, SUN Tao1, LI Xing-huan1, HUANG Wei1, LIU Rui-peng1, LI Yuan-hao2#br#

1. (1Ministry of Education Key Laboratory of Forest Plant Ecology, Northeast Forestry University, Harbin 150040, China; 2Qiqihar University, Qiqihar 161006, Heilongjiang, China）.
• Online:2016-05-18

Abstract: To reveal the radial growth trends of Pinus koraiensis and the  differences in their responses to climate factors among different latitudes, and to assess the dynamic characteristics, adaptability and sensitivity of P. koraiensis under the influence of climate change, dendrochronological techniques were used to study the relationships between the climatic variables and the radial growth of P. koraiensis in broadleaved Korean pine forests with different latitudes. The results showed that there were differences in the responses of the radial growth of P. koraiensis in four different latitudes to local climatic factors. In Baishilazi Nature Reserve, the southernmost sample plot, the radial growth of P. koraiensis was significantly positively correlated to the average relative humidity but significantly negatively correlated to the average maximum temperature of growing season. In low altitude of Changbai Mountain Nature Reserve, the intermediate sample plot, it was significantly positively correlated with precipitation, average relative humidity and PDSI, and significantly negatively correlated with the average maximum temperature in growing season. In Liangshui Nature Reserve, the intermediate sample plot, significantly positive correlations occurred for average relative humidity and PDSI in growing season, while significantly negative correlations occurred for the average temperature and the average maximum temperature in growing season. Nevertheless, in Shengshan Nature Reserve, the northernmost sample plot, it was positively correlated to the temperature factors of most months. The climatic variables in June of current year were the main factors limiting the radial growth of P. koraiensis in all latitudes, and the average maximum temperature in June of current year was highly negatively correlated with radial growth for P. koraiensis measured at all sites. In recent four decades, with the rising of temperature, the radial growth of P. koraiensis decreased significantly in the southernmost point, increased significantly in the northernmost point, and did not change significantly in middle latitudes. The distribution area of P. koraiensis would be reduced if the temperature increased and precipitation remained unchanged in the future.