From October 23 to 27, 2019, the 6th China Tree Ring Annual Conference was held in Xishuangbanna, Yunnan province, China. The conference was hosted by the Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences (CAS), and was co-organized by the IAWA, the Institute of Earth Environment of CAS, the Urumqi Desert Meteorological Institute of China Meteorological Administration (CMA), the Research Institute of Wood Industry of Chinese Academy of Forestry (CAF), Northeast Forestry University and Beijing Normal University. The theme of this annual conference is tree-ring, environment and tropical forest. It was divided into 8 sub-topics: 1) Tree rings and climate; 2) Tree rings and ecological environment; 3) Tree-ring chemistry and stable isotope; 4) Radial growth of trees, tree physiology and wood anatomy; 5) Shrubs and annual rings; 6) Tropical and subtropical tree rings; 7) Tree rings method and large-scale climate change integration; 8. Tree-rings interdisciplinary: records on stalagmites and lakes. The conference included two pre-conference training courses, 7 invited lectures, 115 oral presentations and 36 posters. A total of 324 participants attended the conference.
Yu Liu from the Institute of Earth Environment of CAS gave an invited lecture on “National demand for tree rings research”, Xuemei Shao from the Institute of Geographic Sciences and Natural Resources Research of CAS was invited to provide a lecture on “Is the strong volcanic eruption related to the narrowing of the tree-ring width in the northeastern Tibetan Plateau? ”, Bao Yang from the Research Institute of Cold and Arid Regions Environmental and Engineering of CAS gave an invited lecture on “Progress in east Asian temperature reconstruction in the past millennium”, Eryuan Liang from the Research Institute of Tibetan Plateau of CAS was invited to deliver a lecture on “Tree-line change pattern and its driving mechanism in the Qinghai-Tibet Plateau“, Kunfang Cao from Guangxi University provided an invited lecture on “The response of tropical and subtropical plants to climate change is related to physiological traits“, Hongyan Liu from Beijing University gave a lecture on “A comprehensive study from tree-ring ecology to stem function“, Achim Brauning from Erlangen-Nuremberg University, Germany was invited to provide a lecture on “Recent advances in tropical dendrochronology and the importance of tree-ring anatomy“.
Eryuan Liang and Yafang Yin co-organized the session of Radial growth of trees, tree physiology and wood anatomy. A total of 13 oral reports containing four presentations by IAWA members covered the recent progress on wood anatomy of tree growth. Yafang Yin gave a speech titled “Changes in wood cell walls: correlation of structure and performance”. Wanfeng Li from the Research Institute of Forestry of CAF provided a presentation of “Transcriptional regulation of cell cycle genes during the temperaturemodulated larch tree dormancy release and reactivation”. Shan Li from the Research Institute of Wood Industry of CAF gave a speech on “Influence of cambial age and axial height on the spatial patterns of xylem traits in Catalpa bungei, a ring porous tree species native to China”. Xiaoxia Li from the Research Institute of Tibetan Plateau of CAS gave a report of “The onset of xylogenesis in Smith fir is not related to the outer bark thickness”.
In this annual conference, the oral presentations and posters mainly included latest researches in dendrochronology as well as related disciplines, and received much more attention as well as interest from all participants. During the meeting, awards went to excellent scientists Jiangfeng Li, Yujiang Yuan and Xuemei Shao, and young researchers Keyan Fang and Xiuchen Wu. The conference promoted communication of scientists in the field of dendrochronology and its related subjects, such as ecology, and wood anatomy and was a great success.
Shan Li and Xin Li, China
Group photo of 6th China Tree Ring Annual Conference in Xishuangbanna, China, 2019.