[1]彭舜磊,由文辉,王强,等.天童栲树冠层叶片碳同位素组成特征及与光合参数关系[J].水土保持研究,2016,23(03):274-277.
　PENG Shunlei,YOU Wenhui,WANG Qiang,et al.Characteristics of the Leaf Carbon Isotope in the Castanopsis fargesii Canopy and Their Relationship to Photosynthetic Parameters in the Tiantong Mountain[J].Research of Soil and Water Conservation,2016,23(03):274-277.
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天童栲树冠层叶片碳同位素组成特征及与光合参数关系

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 23 期数: 2016年03期 页码: 274-277 栏目: 出版日期: 2016-06-28
Title:
Characteristics of the Leaf Carbon Isotope in the Castanopsis fargesii Canopy and Their Relationship to Photosynthetic Parameters in the Tiantong Mountain
作者:
彭舜磊1,2, 由文辉1, 王强1, 蒋跃1, 余华光1
1. 平顶山学院 低山丘陵区生态修复重点实验室, 河南 平顶山 467000;
2. 华东师范大学 生态与环境科学学院, 上海 200241
Author(s):
PENG Shunlei1,2, YOU Wenhui1, WANG Qiang1, JIANG Yue1, YU Huaguang1
1. Key Laboratory of Ecological Restoration in the Hilly Area, Pingdingshan University, Pingdingshan, He’nan 467000, China;
2. School of Ecological and Environmental Sciences, East China Normal University, Shanghai 200241, China
关键词:
栲树; 冠层; 叶片稳定性碳同位素; 最大净光合速率; 叶片单位质量氮含量
Keywords:
Castanopsis fargesii; canopy; leaf carbon isotope; maximum assimilation rate (Amax); leaf nitrogen content per unit mass (Nmass)
分类号:
S718.5
摘要:
植物冠层叶片存在稳定性碳同位素贫化效应，反映了冠层光合能力的异质性。通过测试不同月份栲树冠层冠顶至冠下8 m叶片δ13C及叶片最大光合速率（Amax）和单位质量叶片氮含量（Nmass），分析了冠层叶片δ13C的时空分布特征及其与Amax和Nmass的相关关系，验证树高极限的水力限制假说。结果表明：不同月份和冠层高度对冠层叶片δ13C存在极为显著的影响（p < 0.01），从冠顶到冠下8 m叶片δ13C平均值的变化范围为-28.61‰～-31.67‰，冠层叶片δ13C随冠层高度降低呈线性极为显著减小（R2=0.727，p < 0.001）；冠层叶片δ13C随Amax和Nmass的增大而增大，呈极为显著的对数曲线关系（R2=0.514，R2=0.610，p < 0.000 1），不支持树高极限的水力限制假说。
Abstract:
Leaf carbon isotopic depletion exists in plant canopy, which indicates the photosynthetic heterogeneity of canopy. In order to study the temporal and spatial changes of leaf δ13C along canopy vertical gradient, and test whether the hypothesis of tree height limit from hydraulic limitation is true in the Castanopsis fargesii, the values of leaf δ13C, maximum assimilation rate (Amax), and leaf nitrogen content per unit mass (Nmass) were measured from crown to 8 m crown below in different months. The results showed that the different months and canopy heights significantly affected on canopy leaf δ13C (p < 0.01). The mean value of leaf δ13C ranged from -28.61‰ to -31.67‰ along canopy vertical gradients from crown to 8 m crown below, and significantly linearly decreased with the decrease of canopy heights (R2=0.727, p < 0.001). Canopy leaf δ13C significantly increased with the increase of Amax and Nmass (p < 0.000 1), and their relationship followed the logarithmic curve very well (R2=0.514 for Amax, and R2=0.610 for Nmass), which proved that the hypothesis of tree height limit from hydraulic limitation seems to be unlikely in the Castanopsis fargesii.

参考文献/References:

[1] 周兴佳,李崇舜,雷加强,等.塔克拉玛干沙漠南缘策勒县沙丘移动规律的初步研究[J].干旱区研究,1990(1):39-44.
[2] 张鹤年.新疆策勒县绿洲沙害的治理[J].中国沙漠,1990,10(3):68-73.
[3] 张鹤年.新疆策勒县流沙治理试验研究[J].干旱区研究,1988(3):1-8.
[4] 刘铭庭.新疆策勒县绿洲外围固沙植物带的建设[J].中国沙漠,1994,14(2):75-77.
[5] 谭芳,张岩,郭擎宇.古尔班通古特沙漠风沙运动规律及防沙治沙研究[J].科学中国人,2003(4):55-57.
[6] 凌裕泉,吴正,刘绍中,等.新月形沙丘形态的模拟实验研究[J].地理科学,1998,18(1):88-93.
[7] 李兰晓,苏世平,李金昌.流动沙丘的风蚀堆积特征对造林固沙的影响[J].水土保持通报,1994,14(7):37-44.
[8] 姚洪林,阎德仁,胡小龙,等.毛乌素沙地流动沙丘风蚀积沙规律研究[J].内蒙古林业科技,2001(1):3-9.
[9] 李生宇,雷加强,徐新文,等.草方格固沙带对垄间新月形沙丘形态和移动的影响[J].干旱区地理,2006,29(5):632-638.
[10] 朱震达,郭恒文,吴功成.塔克拉玛干沙漠西南地区绿洲附近沙丘移动的研究[J].地理学报,1964,30(1):35-50.
[11] 张鹤年.塔克拉玛干沙漠南缘-绿洲过渡带生态环境区综合治理技术与试验示范研究[J].干旱区研究,1995,12(4):1-9.
[12] 杨佐涛.戈壁与绿洲内的风向风速关系:以新疆策勒县为例[J].中国沙漠,1990,10(3):33-39.
[13] 钱亦兵,张希明,李晓明.塔克拉玛干沙漠南缘绿洲沙物质粒度特征[J].中国沙漠,1995,15(2):131-135.
[14] 毛东雷,雷加强,曾凡江,等.策勒绿洲-沙漠过渡带风沙活动强度的空间分布特征[J].水土保持学报,2013,27(2):13-19.
[15] 朱震达,吴正,李钜章,等.塔克拉玛干沙漠风沙地貌研究[J].科学通报,1966(13):620-624.

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备注/Memo

收稿日期:2015-05-25;改回日期:2015-06-09。
基金项目:高等学校博士学科点科研专项基金“台风暴雨对我国东部沿海常绿阔叶林水文过程的影响”（20090076110021）；中国博士后科学基金“台风对天童常绿阔叶林养分迁移的影响”（2014M561043）
作者简介:彭舜磊(1974-),男,河南驻马店人,博士,副教授,主要从事森林生态系统碳水循环研究。E-mail:pengshunlei@163.com
通讯作者:由文辉(1964-),男,山东龙口人,博士,教授,主要从事城市生态学和水域生态学研究。E-mail:youwenhui1964@126.com

更新日期/Last Update: 1900-01-01