天目山柳杉树轮δ13C序列所反映的植物水分利用率对大气CO2浓度变化的生理响应

doi:10.13249/j.cnki.sgs.2008.05.698

地理科学 ›› 2008, Vol. 28 ›› Issue (5): 698-702.doi: 10.13249/j.cnki.sgs.2008.05.698

天目山柳杉树轮δ¹³C序列所反映的植物水分利用率对大气CO₂浓度变化的生理响应

赵兴云¹, 王建², 商志远², 王祖良³, 钱君龙⁴

1. 临沂师范学院地理与旅游系, 山东临沂276005;
2. 南京师范大学地理科学学院, 江苏南京210029;
3. 天目山自然保护区管理局, 浙江临安 311311;
4. 中国科学院南京地理与湖泊研究所湖泊沉积与环境开放实验室, 江苏南京210008

收稿日期:2007-10-29 修回日期:2008-02-11 出版日期:2008-09-20 发布日期:2008-09-20
作者简介:赵兴云(1962- ),女,山东沂源人,博士,教授,主要研究方向为树木年轮与气候变化。E-mail:synzxy@sina.com
基金资助:
国家自然科学基金项目(49771001)资助。

Foliage Physiological Response to Increase of Atmospheric CO₂ Concentration Reflected by δ¹³C Series of Tree Ring in Tianmu Mountains

ZHAO Xing-Yun¹, WANG Jian², SHANG Zhi-Yuan², WANG Zu-Liang³, QIAN Jun-Long⁴

1. Geography and Tourism Department of Linyi Teachers’ College, Linyi, Shandong 276005;
2. College of Geographical Science, Nanjing Normal University, Nanjing, Jiangsu 210097;
3. Administrative Bureau of Tianmu Mountain National Natural Protection District, Lin’an, Zhejiang 311311;
4. Lake Sediment and Environment Laboratory, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, Jiangsu 210008

Received:2007-10-29 Revised:2008-02-11 Online:2008-09-20 Published:2008-09-20

摘要/Abstract

摘要： 工业化以来,由于大量化石燃料CO₂排入大气,引起大气CO₂浓度的持续升高。研究表明,植物的光合作用、水分利用率及作物生物量等均对周围大气CO₂浓度的增加产生明显的正响应,而植物叶片的气孔导度及蒸腾速率对CO₂浓度增加产生负响应。对采自浙江西天目山地区的三株柳杉树盘交叉定年后,测定了三株树轮的δ¹³C年序列,并利用3株柳杉树轮δ¹³C序列探讨了天目山地区树木生长对大气CO₂浓度增加的生理响应——水分利用率的变化状况。结果是,三株树轮δ¹³C序列反映的水分利用率均是增加的,且增长趋势基本一致。研究结果反映了工业革命前后,树木生长对大气CO₂浓度增加所产生的明显正响应。

Abstract: The concentration of atmospheric CO₂ has been increased due to the CO₂ emission with mass fossil-fuel combustion since industrialization.Many studies indicate that the increasing concentration of atmospheric CO₂ is significantly positive correlation with the photosynthesis and water use efficiency and production of vegetable is negative correlation with the connectivity of foliage stoma and rate of transpiration.In this study, the annual series of δ¹³C of three Cryptomeria fortunei Hooibrenk ex Otto et Dietr (CF) tree disks collected from west Tianmu Mountains, based on cross-dating tree ring ages, were determined.We probe into the physiological response for trees’ growth to the increasing concentration of atmospheric CO₂ and moisture condition on the basis of the three δ¹³C series.The result illuminates that the water use efficiency are all increasing reflected by the three trees and the increasing trend is similar approximately.The result elucidates that the tree growth is significant positive with the increasing of atmospheric CO₂ concentration before and after the Industrial Revolution.

中图分类号:

S718.45

赵兴云, 王建, 商志远, 王祖良, 钱君龙. 天目山柳杉树轮δ¹³C序列所反映的植物水分利用率对大气CO₂浓度变化的生理响应[J]. 地理科学, 2008, 28(5): 698-702.

ZHAO Xing-Yun, WANG Jian, SHANG Zhi-Yuan, WANG Zu-Liang, QIAN Jun-Long. Foliage Physiological Response to Increase of Atmospheric CO₂ Concentration Reflected by δ¹³C Series of Tree Ring in Tianmu Mountains[J]. SCIENTIA GEOGRAPHICA SINICA, 2008, 28(5): 698-702.

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天目山柳杉树轮δ¹³C序列所反映的植物水分利用率对大气CO₂浓度变化的生理响应

Foliage Physiological Response to Increase of Atmospheric CO₂ Concentration Reflected by δ¹³C Series of Tree Ring in Tianmu Mountains

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