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林业科学 ›› 2020, Vol. 56 ›› Issue (12): 28-38.doi: 10.11707/j.1001-7488.20201204

• 论文与研究报告 • 上一篇    下一篇

横断山脉中部川滇冷杉和丽江云杉径向生长对气象因子的响应

于健1,2,陈佳佳1,周光2,3,刘国华1,王永平1,李俊清2,刘琪璟2,*   

  1. 1. 江苏农林职业技术学院风景园林学院 句容 212400
    2. 北京林业大学林学院 北京 100083
    3. 江西省林业科学院 南昌 330032
  • 收稿日期:2020-05-06 出版日期:2020-12-25 发布日期:2021-01-22
  • 通讯作者: 刘琪璟
  • 基金资助:
    江苏农林职业技术学院科技计划项目(2020kj005);江苏农林职业技术学院科技计划项目(2019kj012);国家自然科学基金项目(31670436)

Response of Radial Growth of Abies forrestii and Picea likiangensis to Climate Factors in the Central Hengduan Mountains, Southwest China

Jian Yu1,2,Jiajia Chen1,Guang Zhou2,3,Guohua Liu1,Yongping Wang1,Junqing Li2,Qijing Liu2,*   

  1. 1. School of Landscape Architecture, Jiangsu Vocational College of Agriculture and Forestry Jurong 212400
    2. College of Forestry, Beijing Forestry University Beijing 100083
    3. Jiangxi Academy of Forestry Nanchang 330032
  • Received:2020-05-06 Online:2020-12-25 Published:2021-01-22
  • Contact: Qijing Liu

摘要:

目的: 探讨横断山脉中部地区川滇冷杉和丽江云杉树木径向生长对气象因子的响应,以期为进一步重建我国西南地区气候变化历史提供基础数据,同时也为全球气候变化背景下川滇冷杉和丽江云杉的分布预测和保护研究提供理论参考。方法: 基于树轮气候学方法,获取云南省香格里拉县小中甸地区寒温带针叶林主要树种川滇冷杉和丽江云杉树轮宽度资料,分别建立标准年表,分析2个年表与气象因子的关系。结果: 2个树种对气象因子的响应存在差异,川滇冷杉较丽江云杉对气象因子的响应更加敏感,更适合用于树轮气候学研究;响应函数分析表明,气温对川滇冷杉径向生长的限制作用明显强于丽江云杉,川滇冷杉径向生长主要与上年11月和当年8月平均气温显著正相关(P < 0.05),与上年11月和当年4月最高气温显著正相关(P < 0.05),与上年5月最低气温显著正相关(P < 0.05),与当年3月降水量显著正相关(P < 0.05);空间相关分析揭示,川滇冷杉标准年表能在较大的地理范围空间反映上年11月最低气温变化,且在研究区域附近二者相关性最高;未来全球气候变暖将对上述2个树种径向生长产生促进作用。结论: 在横断山脉中部高海拔地区,气温是限制川滇冷杉和丽江云杉树木径向生长的主要气象因子,2个树种径向生长对气象因子的响应表现出一定差异。利用年轮研究2个树种的种群生长动态及其对气候变化的响应关系具有很大潜力。

关键词: 川滇冷杉, 丽江云杉, 横断山脉, 树轮宽度, 径向生长, 气候变化, 气候响应

Abstract:

Objective: The study was intended to explore the response of radial growth of Abies forrestii and Picea likiangensis to climate factors in the central Hengduan Mountains. In order to provide some basic data for further reconstruction of the history of climate change in Southwest China and to provide a theoretical basis for modelling species distribution and conservation of A. forrestii and P. likiangensis in the context of global climate change. Method: Based on dendroclimatological methods, we established standard chronologies of A. forrestii and P. likiangensis, which are dominant species in the Small Zhongdian area in Shangri-La County of Yunnan Province. Relationship between the two standard chronologies and climatic factors in the central Hengduan Mountains, Southwest China was analyzed. Result: The responses of the two tree species to climate factors were different, and A. forrestii was more sensitive, and hence more suitable for dendroclimatological studies; Response function coefficients indicated that air temperature had a significantly stronger restraining effect on A. forrestii than on P. likiangensis; The radial growth of A. forrestii positively correlated with the mean air temperatures in the previous November and current August (P < 0.05), positively correlated with the maximum air temperature in the previous November and current April (P < 0.05), positively correlated with the minimum air temperature in the previous May (P < 0.05), positively correlated with precipitation in the current March (P < 0.05); Spatial correlation analysis revealed that variations in standard chronology of A. forrestii could reflect the change of the minimum air temperature in the previous November, and the highest correlation with climate factors occurred in the vicinity of the study area; In the future, global warming will promote the radial growth of the two species; Meanwhile, the coupling effects of large-scale atmospheric-oceanic-land variability may affect the radial growth of A. forrestii and P. likiangensis in the central Hengduan Mountains. Conclusion: At the high altitudes in the middle of the central Hengduan Mountains, air temperature is the main climate factor limiting the radial growth of A. forrestii and P. likiangensis, and the response of radial growth of the two tree species to climate factors shows some differences, which also shows that it has great potential to study the population growth dynamics and its response to climate change by using tree-rings.

Key words: Abies forrestii, Picea likiangensis, Hengduan Mountains, tree-ring width, radial growth, climate change, climate response

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