[1]蔡苗,于德水,卢杰*. 色季拉山贡布红杉径向生长对气温及降水的分异响应[J].西北林学院学报,2024,39(1):117-124.[doi:10.3969/j.issn.1001-7461.2024.01.16]
　CAI Miao,YU De-shui,LU Jie*. Divergent Responses of Radial Growth of Larix kongboensis to Temperature and Precipitation in the Shergyla Mountain[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2024,39(1):117-124.[doi:10.3969/j.issn.1001-7461.2024.01.16]
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 色季拉山贡布红杉径向生长对气温及降水的分异响应()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第39卷
期数:
2024年第1期
页码:
117-124
栏目:
出版日期:
2024-01-31

文章信息/Info

Title:
 Divergent Responses of Radial Growth of Larix kongboensis to Temperature and Precipitation in the Shergyla Mountain
文章编号:
1001-7461(2024)01-0117-08
作者:
 蔡苗1; 2; 3; 4; 于德水1; 2; 3; 4; 卢杰1; 2; 3; 4*
 (1.西藏农牧学院 高原生态研究所，西藏 林芝 860000；2.西藏高原森林生态教育部重点实验室，西藏 林芝 860000；3.西藏林芝高山森林生态系统国家野外科学观测研究站，西藏 林芝 860000；4.西藏自治区高寒植被生态安全重点实验室，西藏 林芝 860000)
Author(s):
 CAI Miao1; 2; 3; 4; YU De-shui1; 2; 3; 4; LU Jie1; 2; 3; 4*
 (1.Institute of Tibet Plateau Ecology,Tibet Agricultural & Animal Husbandry University,Nyingchi 860000,Tibet,China; 2.Key Laboratory of Forest Ecology in Tibet Plateau,Tibet Agricultural & Animal Husbandry University/Ministry of Education,Nyingchi 860000,Tibet,China; 3.Nyingchi National Forest Ecosystem Observation & Research Station of Tibet,Nyingchi 860000,Tibet,China)
关键词:
 ; 贡布红杉; 年轮气候学; 树木年轮; 气候波动; 色季拉山
Keywords:
Larix kongboensis;  dendroclimatology;  tree-ring;  climatic fluctuation;  Shergyla Mountain
分类号:
S791.266
DOI:
10.3969/j.issn.1001-7461.2024.01.16
文献标志码:
A
摘要:
 受全球气候变暖的影响，高海拔地区出现了树木径向生长对气候变化的分异响应现象，但是当前西藏特有树种贡布红杉与气象因子之间的响应关系仍不确定。基于色季拉山贡布红杉树木样芯，探究贡布红杉径向生长与气候变化之间的响应联系，并分析影响贡布红杉径向生长的主要气候因子。利用Mann-Kendall突变检验、距平及累计距平确定气温的突变时间，结合TASP-WIN和ARSTAN程序，讨论贡布红杉径向生长在气温突变前后与平均气温、最高气温、最低气温、降水和湿度之间的响应联系。结果表明：1）在生长初期（2-4月）贡布红杉的径向生长与最高气温呈显著负相关，而在生长期（5-9月）其径向生长与相对湿度呈显著负相关。2）在气温发生突变后，贡布红杉径向生长与8月的平均气温由正相关转变为负相关，与9月的最低气温由负相关转变为正相关；3）在研究区域内贡布红杉径向生长的过程中对气候响应呈现分异，与外界环境之间存在的正相关关系或负相关关系可能会相互转变。当前研究区域内气温与贡布红杉径向生长之间的响应关系仍然显著，但降水及相对湿度与贡布红杉之间的响应关系明显增强；极端气温（最低气温和最高气温）对贡布红杉径向生长影响存在明显的分异。
Abstract:
 Due to the impact of global warming,the radial growth of trees in high-altitude areas has differentiated responses to climate change.However,the restrictive meteorological factors of the endemic tree species in Tibet are still uncertain.This study based on the tree-ring of Larix kongboensis in the Shergyla Mountain,the response relationship between radial growth and climate change was explored,and the main meteorological factors limiting radial growth of L.kongboensis were analyzed.Mann-Kendall test,anomaly,and cumulative anomaly were used to determine the time of abrupt change of temperature; combined with TASP-WIN and ARSTAN procedures,the response relationship between the radial growth of L.kongboensis and the average temperature,maximum temperature,minimum temperature,precipitation,and humidity before and after the abrupt change was discussed.The results indicated that 1) at the early stage (February to April),the radial growth of L.kongboensis had a significant negative correlation with the maximum temperature.In the growth period (May to September),the radial growth was significantly and negatively correlated with relative humidity.2) After the abrupt change of temperature,the radial growth changed from positive correlation to negative correlation with the average temperature in August,and from negative correlation to positive correlation with the minimum temperature in September.3) In the study area,the response to climate was different in the process of radial growth of L.kongboensis,and the mutual transformation occurred between "positive correlation" and "negative correlation".At present,the response relationship between temperature and the radial growth of L.kongboensis is still significant in the study area,but the response relationship between precipitation and relative humidity is significantly enhanced.The effect of extreme temperature (minimum and maximum temperature) on the radial growth of L.kongboensis is significantly different.

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备注/Memo

备注/Memo:
 收稿日期：2022-12-10修回日期：2023-03-28
基金项目：科技部国家野外科学研究观测站（生态系统）运行补助项目（2021-2025）;西藏高寒植被生态安全重点实验室研究生开放基金（STAQ-2021Y-3）。
第一作者：蔡苗。研究方向：森林生态学。E-mail：c187811411612@163.com
*通信作者：卢杰，教授，博士生导师。研究方向：森林生态学。E-mail：tibetlj@163.com
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