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[1]李永霞,索郎拉措,杨小林*.急尖长苞冷杉叶片结构和光合特性对海拔高度的响应[J].厦门大学学报(自然科学版),2018,57(04):503-509.[doi:10.6043/j.issn.0438-0479.201712004]
　LI Yongxia,SUOLANG Lacuo,YANG Xiaolin*.Response of Leaf Structure and Photosynthetic Characteristics of Abies georgei var. smithii to Altitudes[J].Journal of Xiamen University(Natural Science),2018,57(04):503-509.[doi:10.6043/j.issn.0438-0479.201712004]
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《厦门大学学报（自然科学版）》[ISSN:0438-0479/CN:35-1070/N]

卷:
57卷
期数:
2018年04期
页码:
503-509
栏目:
研究论文
出版日期:
2018-07-31

文章信息/Info

Title:
Response of Leaf Structure and Photosynthetic Characteristics of Abies georgei var. smithii to Altitudes
文章编号:
0438-0479(2018)04-0503-07
作者:
李永霞; 索郎拉措; 杨小林*
西藏农牧学院资源与环境学院,西藏 林芝 860000
Author(s):
LI Yongxia; SUOLANG Lacuo; YANG Xiaolin*
College of Research and Environment,Tibet Agriculture and Animal Husbandry College,Linzhi 860000,China
关键词:
急尖长苞冷杉;  叶片结构;  光合作用日进程;  海拔高度
Keywords:
Abies georgei var. smithii;  leaf structure;  photosynthetic daily process;  altitude
分类号:
Q 945
DOI:
10.6043/j.issn.0438-0479.201712004
文献标志码:
A
摘要:
为探究急尖长苞冷杉(Abies georgei var. smithii)对不同海拔高度的响应机制,在急尖长苞冷杉集中分布区,按垂直高度100 m高差梯度进行采样,采用石蜡切片法及Li-6400光合测定系统对急尖长苞冷杉叶片结构与光合特性进行测定分析.结果表明:1)急尖长苞冷杉的叶片组织结构随海拔的变化表现出不同的形态特征,随着海拔的升高叶片扭曲变小,海拔4 100 m是叶片组织结构变化的拐点.2)在海拔3 800 m适生区,急尖长苞冷杉6—9月的光合作用日进程呈双峰曲线,高峰分别出现在10:00与16:00时,14:00时出现“午休”现象,随着气温的降低,10月光合作用日进程呈单峰曲线; 海拔4 300 m林线区6—10月的光合作用日进程均呈单峰曲线,12:00时出现最大值,与适生区10月的曲线表现类似.3)急尖长苞冷杉保持了较高的光能转化效率,净光合速率随着光照强度的增加而增加,这有利于光合作用产物的有效积累,为其在极端环境条件生长创造了有利条件.4)急尖长苞冷杉在林线区具有光饱和点较低、光补偿点较高的特点,表现出其对弱光照和低温环境的较强适应性.
Abstract:
In order to explore the response mechanism of Abies georgei var. smithii at different altitudes with the change of environment,sampling was carried out at a vertical height gradient of 100 m in the concentrated distribution area of A. georgei var. smithii,and the differences in leaf structure and photosynthetic characteristics at different altitudes were studied using paraffin method and Li-6400 photosynthesis system.Results showed as following:1)The leaf anatomical structure of A. georgei var. smithii changed and the twist of leaf became smaller with altitude increasing,and the elevation of 4 100 m was the inflection point of leaf anatomical structure. 2)The photosynthetic daily process in suitable growing area(an altitude of 3 800 m)showed a bimodal curve from June to September,with the peaks appearing at 10:00 and 16:00,and a midday depression at 14:00.As the temperature decreases,a single peak curve was shown in October.The photosynthetic daily process in timberline area(an altitude of 4 300 m)was a single peak curve from June to October with the maximum at 12:00,consistent with the curve for the suitable growing area in October. 3)The rapid growth of A. georgei var. smithii was maintained by a higher photoenergy conversion efficiency.The net photosynthetic rate increased with the increase of light intensity,which is beneficial to the effective accumulation of photosynthate and to create favorable conditions for its growth in extreme environmental conditions. 4)In timberline area the A. georgei var. smithii was characterized by a relatively low light saturation point and a relatively high light compensation point,indicating that it had strong adaptation to weak light and low temperature.

参考文献/References:

[1] 贺金生,陈伟烈,王勋陵.高山栎叶的形态结构及其与生态环境的关系[J].植物生态学报,1994,18(3):219-227.
[2] 李芳兰,包维楷.植物叶片形态解剖结构对环境变化的响应与适应[J].植物学通报,2005,22(增):118-127.
[3] 赵昱,刘占林.5种松树针叶解剖结构的数量分析[J].西北林学院学报,2010,25(2):19-24.
[4] 蔡永萍.植物生理学[M].北京:中国农业大学出版社,2004:61-62.
[5] 许大全,沈允钢.植物光合作用效率的日变化[J].植物生理学报,1997,23(4):410-416.
[6] 桑运荣,王传宽,郎广林,等.水曲柳的光合作用效率[J].东北林业大学学报,1999,27(2):15-18.
[7] 王爱民,刘志学,祖元刚.天然白桦种苗光合作用日进程[J].上海大学学报:英文版,2000,4(S1):202-205.
[8] 刘鸿雁,谷洪涛,唐志尧,等.中国东部暖温带高山林线乔木的光合作用及其与环境因子的关系[J].山地学报,2002,20(1):32-36.
[9] MA L,SUN X,KONG X,et al.Physiological,biochemical and proteomics analysis reveals the adaptation strategies of the alpine plant Potentilla saundersiana at altitude gradient of the Northwestern Tibetan Plateau[J].Journal of Proteomics,2015,112:63-82.
[10] 施征,白登忠,雷静品,等.高山植物对其环境的生理生态适应性研究进展[J].西北植物学报,2011,31(8):1711-1718.
[11] 蔡金桓,薛立.高山植物的光合生理特性研究进展[J].生态学杂志,2018,37(1):245-254.
[12] 列淦文,叶龙华,薛立.臭氧胁迫对植物主要生理功能的影响[J].生态学报,2014,34(2):294-306.
[13] 杨小林,崔国发,等.西藏色季拉山林线植物群落多样性格局及林线的稳定性[J].北京林业大学学报,2008,30(1):14-20.
[14] 王襄平,张玲,方精云.中国高山林线的分布高度与气候的关系[J].地理学报,2004,59(6):871-879.
[15] 杨小林.西藏色季拉山林线森林群落结构与植物多样性研究[D].北京:北京林业大学,2007:20.
[16] 张志良,瞿伟菁,李小方.植物生理学实验指导[M].北京:高等教育出版社,2009:12.
[17] 叶子飘,高峻.光响应和CO2响应新模型在丹参中的应用[J].西北农林科技大学学报(自然科学版),2009,37(1):129-134.
[18] FARQUHAR G D,SHARKEY T D.Stomatal conductance and photosynthesis[J].Annu Rev Plant Physiol Mol Biol,1982,33:317-345.
[19] 郑国琦,张磊,郑国保,等.不同灌水量对干旱区枸杞叶片结构、光合生理参数和产量的影响[J].应用生态学报,2010,2(11):2806-2813.
[20] 李宏林,徐当会,杜国祯.青藏高原高寒沼泽湿地在退化梯度上植物群落组成的改变对湿地水分状况的影响[J].植物生态学报,2012,36(5):403-410.
[21] 马元屾,王中生,余华,等.不同海拔梯度下黄山松与马尾松针叶形态·光合生理特性的研究[J].安徽农业科学,2012,29(10):14155-14158.
[22] 凌子然,王丹碧,张云燕,等.高山林线树木光合作用适应性研究进展[J].世界林业研究,2016,29(2):12-17.
[23] 施征,白登忠,雷静品,等.高山植物对其环境的生理生态适应性研究进展[J].西北植物学报,2011,31(8):1711-1718.

备注/Memo

备注/Memo:
收稿日期:2017-12-04 录用日期:2018-03-22
基金项目:西藏高原林业生态工程重点实验室资助项目
*通信作者:382965037@qq.com
引文格式:李永霞,索郎拉措,杨小林.急尖长苞冷杉叶片结构和光合特性对海拔高度的响应[J].厦门大学学报(自然科学版),2018,57(4):503-509.
Citation:LI Y X,SUOLANG L C,YANG X L.Response of leaf structure and photosynthetic characteristics of Abies georgei var. smithii to altitudes[J].J Xiamen Univ Nat Sci,2018,57(4):503-509.(in Chinese)
更新日期/Last Update: 1900-01-01