水碳控制条件对闽楠叶片气孔特征和气体交换参数的影响

doi:10.16843/j.sswc.2019.03.001

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Abstract [Background] It is of great significance to study the changes of plant physiological parameters under climate change for soil and water conservation and vegetation restoration. Phoebe bournei is a unique and rare species in China. It needs to live in a place with better site conditions. Thus, how to adjust the relationship between transpiration and photosynthesis of P. bournei to adapt to changes in soil moisture and CO₂ concentration, under global climate change, is an urgent problem to be solved. In order to understand the underlining mechanisms of effects of CO₂ concentration and soil moisture on leaf stomatal traits and gas exchange parameters of Phoebe bournei, indoor simulated experiments were conducted.[Methods] Utilizing artificial incubators, 4 CO₂ concentrations (400, 500, 600, and 800×10^-6) and 2 soil moisture gradients (14%-16% (drought) and 25%-27% (field capacity)), a total of eight water-carbon control conditions were set to cultivate 5-year-old P. bournei for 4 months. The new leaves were collected to measure the indicators, including stomatal density, opening extent of stomatal, stomatal conductance, net photosynthetic rate, transpiration rate and intercellular CO₂ concentration. Meanwhile, water use efficiency was calculated.[Results] 1) The response of leaf stomatal density to CO₂ concentration was more sensitive than to soil moisture gradient. High CO₂ concentration resulted in the reduction of stomatal density of leaves in tip, middle and tail. The stomatal density was higher in field capacity than drought. The higher the CO₂ concentration was, the greater the difference of stoma density under different moisture gradient was. 2) The sensitivity of stomata opening extent to soil moisture response was higher than that of CO₂ concentration. Under the same soil moisture gradient, for every 100×10^-6 increase of CO₂ concentration, the proportion of pore opening decreased only about 2%-4%. With different soil moisture gradient, the range of stoma opening ratio was around 15%-50%. 3) CO₂ concentration had strong influences on the net photosynthetic reaction rate, transpiration rate and water use efficiency of Phoebe bournei. They showed exponential relationships with CO₂ concentration. Especially in field capacity, the response relationship was faster than under drought. However, the effects of soil moisture gradient on leaves gas exchange parameters were weaker.[Conclusions] The sensitivity of stomatal density and gas exchange parameters of Phoebe bournei to CO₂ concentration was higher than that to soil water. However, stomatal opening extent and conductance responded more strongly to soil moisture.

Key words： soil moisture CO₂ concentration stomatal conductance water use efficiency Phoebe bournei

Received: 20 August 2018

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S157.1

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	JIA Jianbo
	LIU Wenna
	WEN Shizhi
	WANG Zhongcheng

Cite this article:

JIA Jianbo,LIU Wenna,WEN Shizhi, et al. Effects of CO₂ concentration and soil moisture on leaf stomatal traits and gas exchange parameters of Phoebe bournei[J]. SSWC, 2019, 17(3): 1-7.

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http://journal12.magtechjournal.com/Jweb_stbc/EN/10.16843/j.sswc.2019.03.001 OR http://journal12.magtechjournal.com/Jweb_stbc/EN/Y2019/V17/I3/1

[1]	DAI A. Erratum:Drought under global warming:A review[J]. Wiley Interdisciplinary Reviews Climate Change, 2011, 2(1):45.
[2]	LOBELL D B,ROBERTS M J,SCHLENKER W,et al. Greater sensitivity to drought accompanies maize yield increase in the US Midwest[J]. Science,2014,344(6183):516.
[3]	GIMENO T E,CROUS K,COOKE J,et al. Conserved stomatal behavior under elevated CO2 and varying water availability in a mature woodland[J]. Functional Ecology,2016,30(5):700.
[4]	曹庆平,赵平,倪广艳,等. 华南荷木林冠层气孔导度对水汽压亏缺的响应[J]. 生态学杂志,2013,32(7):1770. CAO Qingping,ZHAO Ping,NI Guangyan,et al. Responses of canopy stomatal conductance of Schima superba stand to vapor pressure deficient in southern China[J].Chinese Journal of Ecology,2013,32(7):1770.
[5]	HETHERINGTON A M,WOODWARD F I. The role of stomata in sensing and driving environmental change[J].Nature, 2003,424(6951):901.
[6]	CASSON S A,HETHERINGTON A M. Environmental regulation of stomatal development[J]. Current Opinion in Plant Biology,2010,13(1):90.
[7]	LUOMALA E M,LAITINEN K,SUTINEN S,et al. Stomatal density,anatomy and nutrient concentrations of Scots pine needles are affected by elevated CO2 and temperature[J]. Plant Cell Environment, 2005, 28(6):733.
[8]	ZHAO N,MENG P,HE Y,et al. Interaction of CO2 concentrations and water stress in semiarid plants causes diverging response in instantaneous water use efficiency and carbon isotope composition[J]. Biogeosciences,2017,14(14):3431.
[9]	朱玉,黄磊,党承华,等. 高温对蓝莓叶片气孔特征和气体交换参数的影响[J]. 农业工程学报,2016,32(1):218. ZHU Yu,WANG Lei,DANG Chenghua,et al. Effects of high temperature on leaf stomatal traits and gas exchange parameters of blueberry[J]. Transactions of the CSAE,2016,32(1):218.
[10]	何雅冰. 北京山区典型树种不同CO2浓度下水分利用效率研究[D]. 北京:北京林业大学,2016:68. HE Yabing. Research about water use efficiency of the typical tree in Beijing under different CO2 concentration[D]. Beijing:Beijing forestry university,2016:68.
[11]	吴冰洁. 叶片生长过程中气孔发育状态对光合作用气孔限制和叶温调节的影响[D]. 北京:北京林业大学,2015:68. WU Bingjie. Effects of stomatal development on stomatal limitation of photosynthesis and leaf temperature during leaf growth[D]. Beijing:Beijing Forestry University,2015:68.
[12]	刘文娜,贾剑波,余新晓,等. 华北山区侧柏冠层气孔导度特征及其对环境因子的响应[J]. 应用生态学报,2017,28(10):2. LIU Wenna,JIA Jianbo,YU Xinxiao, et al. Characteristics of canopy stomatal conductance of Platycladus orientalis and its responses to environmental factors in the mountainous area of North China[J].Chinese Journal of Applied Ecology,2017,28(10):2.
[13]	ROGIERS S Y,HARD ⅡE W J,SMITH J P. Stomatal density of grapevine leaves (Vitis vinifera L.) responds to soil temperature and atmospheric carbon dioxide[J]. Australian Journal of Grape and Wine Research,2011,17(2):147.
[14]	徐文铎,齐淑艳,何兴元,等. 大气中CO2、O3浓度升高对银杏成年叶片气孔数量特征的影响[J]. 生态学杂志,2008,27(7):1059. XU Wenduo,QI Shuyan,HE Xingyuan,et al. Effects of elevated CO2 and O3 concentrations on quantitative characteristics of mature leaf stomata in Ginkgo biloba[J]. Chinese Journal of Ecology,2008,27(7):1059.
[15]	任昱,卢琦,吴波,等. 白刺叶片气孔特征对人工模拟降雨的响应[J]. 生态学报,2014,34(21):6101. REN Yu,LU Qi,WU Bo,et al. Response of leaf of Nitraria tangutorum Bobr stomata characteristics to artificial simulation of rainfall[J]. Acta Ecologica Sinica,2014,34(21):6101.
[16]	徐辉,李磊,李庆会,等. 大气CO2浓度与温度升高对茶树光合系统及品质成分的影响[J]. 南京农业大学学报,2016,39(4):550. XU Hui,LI Lei,LI Qinghui,et al. Effects of elevated atmospheric CO2 concentration and temperature on photosynthesis system and quality components in tea plant[J]. Journal of Nanjing Agricultural University,2016,39(4):550.
[17]	曹恭祥,郭中,季蒙,等. 玫瑰叶片光合参数的光响应和CO2响应研究[J]. 内蒙古林业科技,2016,42(4):10. CAO Gongxiang,GUO Zhong,JI Meng,et al. Responses of photosynthetic parameters of Rosa rugosa Thunb. to light and CO2 concentration[J]. Journal of Inner Mongolia Forestry Science & Technology,2016,42(4):10.
[18]	王荣荣,夏江宝,杨吉华,等. 贝壳砂生境酸枣叶片光合生理参数的水分响应特征[J]. 生态学报,2013,33(19):6088. WANG Rongrong,XIA Jiangbao,YANG Jihua,et al. Response characteristics of photosynthetic and physiological parameters in Ziziphus jujuba var. spinosus seedling leaves to soil water in sand habitat formed from seashells[J]. Acta Ecologica Sinica,2013,33(19):6088.