| 光照对芦苇生物生产力及光合能力的影响 |
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| 引用本文： | 连晓倩,陶长铸,郭昊澜,李娜娜,曹越,吴鹏飞.光照对芦苇生物生产力及光合能力的影响[J].中国农学通报,2022,38(20):47-52. |
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| 作者姓名： | 连晓倩 陶长铸 郭昊澜 李娜娜 曹越 吴鹏飞 |
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| 作者单位： | 1.福建农林大学林学院,福州 350002;2.南方红壤区水土保持国家林业和草原局重点实验室,福州 350002 |
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| 基金项目： | 国家科技支撑计划“强度侵蚀区退化生态系统修复关键技术的研发与集成”(2014BAD15B02)； |
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| 摘 要： | 为研究水陆交错带优良造林材料芦苇(Phragmites australis)对光照环境的响应规律,选择水岸不同光照生境分布的芦苇种群为对象,测定分析光照强度对芦苇生长、生物量积累及光合能力的影响规律。本试验在野外原位观测全光照和林冠遮荫条件下芦苇株高、地径、叶片SPAD值以及叶绿素荧光参数的基础上,采用全株收获法进行不同器官生物量的室内测定。结果表明：（1）林冠遮荫条件下,芦苇株高、叶片生物量和茎生物量比全光照条件下分别高30.95%,56.08%和84.37%;芦苇株高与地径和茎干重达到极显著正相关水平,分别为0.692、0.875。（2）种光照条件下的芦苇叶片的SPAD值存在显著差异;林冠遮荫条件下,芦苇叶片SPAD值大于全光照条件下25.98%。（3）林冠遮荫条件下显著促进了芦苇叶绿素荧光参数Fm与PSII最大光化学量子产量Fv/Fm的值,分别高达34.14%、10.73%。
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| 关 键 词： | 芦苇 生物量分配 叶绿素荧光参数 光照环境 |
| 收稿时间： | 2021-07-01 |
Effects of Light on Biological Productivity and Photosynthetic Capacity of Phragmites australis |
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| LIAN Xiaoqian,TAO Changzhu,GUO Haolan,LI Nana,CAO Yue,WU Pengfei.Effects of Light on Biological Productivity and Photosynthetic Capacity of Phragmites australis[J].Chinese Agricultural Science Bulletin,2022,38(20):47-52. |
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| Authors: | LIAN Xiaoqian TAO Changzhu GUO Haolan LI Nana CAO Yue WU Pengfei |
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| Institution: | 1.College of Forestry, Fujian Agriculture and Forestry University, Fuzhou 350002;2.Key Laboratory of State Forestry and Grassland Administration on Soil and Water Conservation of Red Soil Region in Southern China, Fuzhou 350002 |
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| Abstract: | Phragmites australis is an excellent afforestation material in aquatic-terrestrial ecotone. In order to study its response to different light environments, taking P. australis populations distributed in different light habitats along the waterfront as the objects, the effects of light intensity on the growth, biomass accumulation and photosynthetic capacity of P. australis were determined. In this experiment, based on the method of in-situ observation in field to measure plant height, ground diameter, leaf SPAD value and chlorophyll fluorescence parameters of P. australis under full light and canopy shading respectively, the biomass of different organs was determined by indoor test using the measure of whole plant harvest. The results show that: (1) under canopy shading, the plant height, leaf biomass and stem biomass of P. australis are higher than those under full light environment by 30.95%, 56.08% and 84.37%, respectively, the plant height of P. australis has significantly positive correlations with the diameter at root collar and stem dry weight, and the coefficients are 0.692 and 0.875, respectively; (2) there is significant difference of the SPAD value of P. australis leaves between the two light conditions, compared with that of the full light environment, the SPAD value of leaves under canopy shading is 25.98% higher; (3) canopy shading could significantly promote the value of chlorophyll fluorescence parameter Fm and the maximum photochemical quantum yield Fv/ Fm of PSII by 34.14% and 10.73%, respectively. |
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| Keywords: | Phragmites australis biomass allocation chlorophyll fluorescence parameters light environment |
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