[1]朱娜,陈红林,张群,等. 秦岭南坡油松树轮碳稳定同位素对气候因子的响应[J].西北林学院学报,2019,34(3):21-27.[doi:10.3969/j.issn.1001-7461.2019.03.04]
　ZHU Na,CHEN Hong-lin,ZHANG Qun,et al. Responses of δ13C in Pinus tabuliformis Tree Rings to the Changes of Climatic Factors in the Qinling Mountains[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2019,34(3):21-27.[doi:10.3969/j.issn.1001-7461.2019.03.04]
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 秦岭南坡油松树轮碳稳定同位素对气候因子的响应()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第34卷
期数:
2019年第3期
页码:
21-27
栏目:
出版日期:
2019-05-31

文章信息/Info

Title:
 Responses of δ13C in Pinus tabuliformis Tree Rings to the Changes of Climatic Factors in the Qinling Mountains
文章编号:
1001-7461(2019)03-0021-07
作者:
 朱娜1; 陈红林1; 张群1; 林强2; 刘淑明1*
 (1.西北农林科技大学 理学院，陕西 杨陵 712100；2.青海省林业专用物资储备中心，青海 西宁 810000)
Author(s):
 ZHU Na1; CHEN Hong-lin1; ZHANG Qun1; LIN Qiang2; LIU Shu-ming1*
 （1.College of Science,Northwest A&F University,Yangling 712100,Shaanxi,China; 2.Qinghai Forestry Special Material Reserve Center,Xining 810000,Qinghai,China)
关键词:
 ; 秦岭; 油松; 碳稳定同位素（δ13C）; 气候因子; 树轮
Keywords:
 ; Qinling Mountains;  Pinus tabuliformis;  carbon stable isotopes (δ13C);  tree rings;  climatic factor
分类号:
S791.254
DOI:
10.3969/j.issn.1001-7461.2019.03.04
文献标志码:
A
摘要:
 根据树木年轮气候学原理，运用相关分析和多元回归分析方法，研究陕西秦岭南坡油松（Pinus tabuliformis）树轮碳稳定同位素（δ13C）对气候变化的响应。结果表明,树轮δ13C含有丰富的气候信息，低海拔(1 250 m)的油松δ13C与前一年的4月温度显著正相关（P＜0.05），与当年10月降水显著正相关（P＜0.05）；中海拔（1 450 m）的油松δ13C与当年2月温度显著正相关（P＜0.05），同时也与5月的极端高温显著正相关（P＜0.05）；高海拔（1 650 m）的油松δ13C与当年10月温度显著负相关（P＜0.05），与1月相关湿度显著正相关（P＜0.05）。1978、1990年夏、冬季气温的偏低和秋季气温偏高，7月温度低于8月,4-9月降水波动太大，这些反常的气候变化扰乱了油松正常的生理活动，破坏了油松的光合作用过程，造成δ13C值的异常降低。
Abstract:
 Based on the principles of dendroclimatology,responses of δ13C in Pinus tabuliformis tree rings to the changes of climatic factors in the south slope of the Qinling Mountains were examined by using the analyses of correlation and multiple regression.The results showed that sufficient climate information was retrieved from the δ13C data set of the tree rings.At low elevation (1 250 m),δ13C in P.tabuliformis was significantly and positively correlated with temperature in April of the previous year (P<0.05),and likewise with precipitation in October of the same year (P<0.05).At mid elevation (1 450 m),δ13C was not only positively correlated with temperature in February of the same year (P<0.05) but also with extreme high temperature in May (P<0.05).At high elevation (1 650 m),δ13C was negatively correlated with temperature in October the same year (P<0.05),and positively correlated with the relative humidity in January the same year (P<0.05).Since spring temperatures clearly impacted carbon uptake and fixation of P.tabuliformis,this tree species’ rings thus offered considerable potential for robustly inferring past climatic variability of the Qinling Mountains.

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备注/Memo

备注/Memo:
 收稿日期：2018-01-19修回日期：2019-03-14
基金项目：陕西省自然科学基础研究计划项目（2015JM4141）。
作者简介：朱娜，女，硕士在读，研究方向：植物资源与环境。E-mail:felicityzn@126.com
*通信作者：刘淑明，女，教授，研究方向：农林气象及干旱区。E-mail:liusm@nwsuaf.edu.cn
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