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[1]LI Ming-yi,LIU Gang,XU Wen-nian,et al.Research on Adaptability of Leucanea leucocephala under Different Soil Moisture Conditions[J].Research of Soil and Water Conservation,2013,20(02):259-262,266.

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Research on Adaptability of Leucanea leucocephala under Different Soil Moisture Conditions

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 20 Number of periods: 2013 02 Page number: 259-262,266 Column: Public date: 2013-04-28

Title:: Research on Adaptability of Leucanea leucocephala under Different Soil Moisture Conditions

Author(s):: LI Ming-yi¹, LIU Gang^1,2,3, XU Wen-nian¹, ZHU Shun-bo¹, ZHAO Zi-chao¹, WU Bin¹; 1. Key Laboratory of Geological Hazards on Three Gorges Reservoir Area, Ministry of Education, China Three Gorges University, Yichang, Hubei 443002, China;
2. State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi 712100, China;
3. College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China

Keywords:: Three Gorges Reservoir Area; the hydro-fluctuation belt; water gradient; L. leucocephal; photosynthetic physiological characteristics

CLC:: Q945.11

DOI:: -

Abstract:: The regular pattern of soil moisture condition of the hydro-fluctuation belt in Three Gorges Reservoir Area was imitated, and changes in the number of adventitious root, chlorophyll content and photosynthetic physiological characteristics of L. leucocephala seedlings were investigated. Results showed that different water treatments could significantly influence the photosynthetic physiological characteristics of L. leucocephala seedlings. The growth indices of seedlings, such as plant height and the number of adventitious root, were significantly inhibited and the net photosynthetic rate (Pn), transpiration rate (Tr), stomatal conductance (Gs) and intercellular CO₂ concentration (Ci) also decreased significantly, showing a negative photosynthetic response to the flooding stress. But it was in contrast with a positive photosynthetic response to the water saturation and mild drought conditions, and the indices of seedlings comprehensively performed best. Therefore, L. leucocephala has relatively weak submergence-tolerant instinct but a strong draught tolerance, and is suitable for growing in the conditions of mild drought and water-saturated habitats, and L. leucocephala should be considered as the key plant in terms of vegetation restoration in the hydro-fluctuation belt of the Three Gorges Reservoir Area.

References:: [1] 陈国阶.三峡库区发展态势与问题[J].长江流域资源与环境.2003,12(2):107-112.
[2] 刁承泰,黄京鸿.三峡水库水位涨落带土地资源的初步研究[J].长江流域资源与环境,1999,8(1):75-80.
[3] 徐飞,郭卫华,王玉芳,等.济南市校园6个绿化树种光合荧光特征比较初探[J].山东大学学报,2007,42(5):86-94.
[4] 李昌晓,钟章成.三峡库区消落带土壤水分变化条件下池杉幼苗光合生理响应的模拟研究[J].水生生物学报,2005,29(6):712-716.
[5] 靖元孝,程惠青,彭建宗,等.水翁幼苗对淹水的反应初报[J].生态学报,2001,21(5):810-813.
[6] Kozlowski T T. Responses of woody plants to flooding and salinity[J]. Tree Physiology Monograph,1997(1):1-29.
[7] Drew M C. Sensing soil oxygen[J]. Plant, Cell and Environment,1990,13(3):681-693.
[8] 陈婷,曾波,叶小齐,等.水淹对野古草和秋华柳不定根形成的影响[J].安徽农业科学,2007,35(19):5703-5704.
[9] Kawase M, Whitmoger R E. Aerenchyma development in waterlogged plants[J]. American Journal of Botany,1980,67(1):18-22.
[10] 李芳兰,包维凯,吴宁.白刺花幼苗对不同程度干旱胁迫的形态[J].生态学报,2009,29(10):5406-5416.
[11] 利容千,王建波.植物逆境细胞及生理学[M].武汉:武汉大学出版社,2002.
[12] 许大全.光合作用气孔限制分析中的一些问题[J].植物生理学通讯,1997,33(4):241-244.
[13] Farquhar G D, Sharkey T D. Stomatal conductance and photosynthesis[J]. Ann. Rev. Plant Physiol,1982,3:317-345.

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