基于OTC模拟的臭氧浓度升高对华山松生长的影响  

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

作　　者：刘常富[1] 刘辰[1] 何兴元[2] 阮亚男[3] 徐胜 陈振举[1,2,4] 彭俊杰[2] 李腾[2] 

机构地区：[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]辽宁大学生命科学院,沈阳110036 [4]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

出　　处：《应用生态学报》2013年第10期2731-2736,共6页Chinese Journal of Applied Ecology

基　　金：国家自然科学基金项目(31100327;41071035;31000225;41271066;31170573;31270518);沈阳农业大学"天柱山学者"计划项目;中国森林生态系统监测网络CFERN&GENE奖励计划项目;辽宁省建筑生态物理技术与评价重点实验室开放基金项目(JZ-200909)资助

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.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 inhibi- ted the stem growth of P. armandii significantly, with the annual growth of the stem length and di- ameter reduced by 35.0% and 12.9% , respectively. The annual growth of tree-ring width and the annual ring ceils 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）.

关 键 词：华山松 臭氧 径向结构 开顶箱 树木年代学 木本植物解剖学 

分 类 号：S791.241[农业科学—林木遗传育种]