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基于OTC模拟的臭氧浓度升高对华山松生长的影响

刘常富1,刘辰1,何兴元2,阮亚男4,徐胜2,陈振举1,2,3**,彭俊杰2,李腾2   

  1. (1沈阳农业大学林学院, 沈阳 110866; 2中国科学院沈阳应用生态研究所森林与土壤生态国家重点实验室, 沈阳 110164; 3中国森林生态系统监测网络辽宁辽河平原森林生态系统定位研究站, 辽宁昌图 112500; 4辽宁大学生命科学院, 沈阳 110036)
  • 出版日期:2013-10-18 发布日期:2013-10-18

Effects of elevated ozone on Pinus armandii growth: A simulation study with open-top chamber.

LIU Chang-fu1, LIU Chen1, HE Xing-yuan2, RUAN Ya-nan4, XU Sheng2, CHEN Zhen-ju1,2,3, PENG Jun-jie2, LI Teng2   

  1. (1College of Forestry, Shenyang Agricultural University, Shenyang 110866, China; 2State Key Laboratory of Forest and Soil Ecology, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110164, China; 3Research Station of LiaoheRiver Plain Forest Ecosystem, Chinese Forest Ecosystem Research Network, Changtu 112500, Liaoning China; 4College of Life Science, Liaoning University, Shenyang 110036, China)
  • Online:2013-10-18 Published:2013-10-18

摘要:

利用树木年代学技术,以生长在开顶箱内的华山松为试材,研究高浓度臭氧条件下树木个体生长及典型森林生态系统的动态演变规律和适应机制.结果表明: 高浓度臭氧抑制了华山松茎节的生长, 茎节长度、直径年均生长量分别降低了35.0%和12.9%;年轮宽度生长量和年轮细胞数量分别降低11.5%和54.1%,但管胞直径的变化不明显.区域水平上,臭氧浓度的波动与当地植被生长变化(NDVI)显著相关.
 

Abstract: By using open-top chamber (OTC) and the techniques of dendrochronology, this paper studied the growth of Pinus armandii under elevated ozone, and explored the evolution dynamics and adaptation mechanisms of typical forest ecosystems to ozone enrichment. Elevated ozone inhibited the stem growth of P. armandii significantly, with the annual growth of the stem length and diameter reduced by 35.0% and 12.9%, respectively. The annual growth of treering width and the annual ring cells number decreased by 11.5% and 54.1%, respectively, but no significant change was observed in the diameter of tracheid. At regional scale, the fluctuation of ozone concentration showed significant correlation with the variation of local vegetation growth (NDVI).