| 赵永全，何彤慧，夏贵菊.不同管理方式对芦苇生长的影响研究[J].广东农业科学,2014,41(19):165-169 |
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不同管理方式对芦苇生长的影响研究 |
| Effects of different management approaches on Phragmites australis growth |
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| DOI： |
| 中文关键词: 湿地 芦苇 生物量 管理方式 火烧 |
| 英文关键词: wetland Phragmites australis biomass management approaches fire |
| 基金项目:国家自然科学基金（41361095） |
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| 摘要点击次数: 1718 |
| 全文下载次数: 676 |
| 中文摘要: |
| 通过定点观测及室内综合分析的方法，研究了芦苇在不同管理方式下的生长状况及光合特征。结果表明：（1）芦苇各生长指标之间具有紧密的关联，生物量、叶面积、株高、株径可以较好地反映芦苇的综合状况，即可以用来评价芦苇生长情况。密度增加是芦苇群落退化的重要表现之一。（2）适时适当的火烧处理可以起到积极的生态作用，促使芦苇在形态指标和生物量上都表现出优势，促使芦苇更早进入生长发育袁并且较早地进入生殖生长期。（3）收割处理可移除地表枯落物，使地上植被具有更多的生长空间去竞争水肥气热等资源，而对芦苇生长发育具有积极促进作用，而不同留茬高度对芦苇的生长无显著影响。（4）芦苇的盖度、株径、叶片个数、分节数和株高的变异系数均较小，表明它们作为芦苇的基本形态指标是较为稳定的，生态可塑性小；而芦苇种群密度的变异系数较大，表明密度不稳定，具有较大的生态可塑性。 |
| 英文摘要: |
| Study on the growth and photosynthetic characteristics of Phragmites australis under different management approaches were carried out by locating observation and indoor synthetic analysis. The results showed that different management approaches had different degree of influence on the growth of P. australis, the details were as follows: (1)There was strong correlation among the growth indicators of P. australis. Biomass, leaf-area, height and thick stem could represent complete information for P. australis, which meant that they could evaluate the growth of P. australis. Density increase was one of important symbols in P. communis community. (2) Fire could promote growth and development for P.australis in the spring before sprouting, because fire made soil to warm and to further thaw, those broke the dormancy of winter bud and germinated in finally. (3) It was good for growth of P. australis by harvest, because harvest would remove the surface of the litter so that there was more space to compete the water, fertilizer, gas, hot and the other resources for aboveground vegetation. (4) The variable coefficients of coverage, thick stem, leaf number, internode number and height were smaller, which showed they were stable, had low ecological plasticity, however, the variable coefficient of population density of P. australis was high, meant that it had high ecological plasticity. |
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