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- Title
寒温带森林白桦径向生长的海拔差异及其气候响应 ----以奥克里堆山为例.
- Authors
吕朝阳; 贠瑞鑫; 吴 涛; 马艳军; 陈振举; 靳雨婷; 李俊霞
- Abstract
Climate change has profound impacts on the structure and function of forest ecosystem. Under the background of climate warming, the growth patterns and climate responses of different species in different environments determine the development and stability of ecosystems. Using the method of tree chronology with ring width data of Betula platyphylla in Oakley Mountain of Daxing' an Mountains, we examined the relationship between the growth climate response of the pioneer B. platyphylla in larch forest and temperature rise and altitudinal changes. The results showed that climate warming resulted in the differentiation on B. platyphylla in different altitude. The radial growth of B. platyphylla increased significantly at the low altitude area (1050 m), while there were little changes at the relatively high altitude area (1250 m). Before the time of rapid warming (1980), the radial growth of B. platyphylla on two altitude areas were significantly stressed by low temperature in winter (October to February). During the period of rapid warming (1981-2010), low temperature stress in winter did not affect tree growth, with the growing season (May to July) temperature becoming the main limiting factors to the radial growth of B. platyphylla at the relatively high altitude areas. The growth of B. platyphylla increased in the low altitude stands with favorable water and heat conditions. The distribution of B. platyphylla may generally spread to high altitude sites in the study area under climate warming.
- Subjects
IMPACT craters; GROWING season; CLIMATE change; LOW temperatures; ALTITUDES; TREE growth; TREE-rings; SOIL heating
- Publication
Yingyong Shengtai Xuebao, 2020, Vol 31, Issue 6, p1889
- ISSN
1001-9332
- Publication type
Article
- DOI
10.13287/j.1001-9332.202006.011