| 上海崇明东滩互花米草种子产量及其萌发对温度的响应 |
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| 引用本文： | 张利权,祝振昌,肖德荣.上海崇明东滩互花米草种子产量及其萌发对温度的响应[J].生态学报,2011,31(6):1574-1581. |
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| 作者姓名： | 张利权 祝振昌 肖德荣 |
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| 作者单位： | 华东师范大学河口海岸国家重点实验室,城市生态化过程与生态恢复上海市重点实验室,上海,200062 |
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| 基金项目： | 海洋公益性行业科研专项(200805080); 上海市科委重点科技项目(08231200702) |
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| 摘 要： | 外来物种互花米草通过快速的无性和有性繁殖,已在崇明东滩形成了大面积的单优势种群。研究了崇明东滩互花米草入侵区种子产量及温度对其萌发的影响。结果表明,互花米草在潮间带的中潮间带种子产量最高,为44523粒/m2,高潮间带次之,为31150粒/m2,低潮间带最低,为17250粒/m2。各潮间带的种子在10 30℃范围内均能萌发,而且随着温度的升高,萌发率和萌发速度总体呈现先增大后减小的趋势。互花米草种子在25℃恒温与20/30℃变温处理下的萌发率最高和萌发速度最快,而且互花米草种子在变温环境下的萌发率高于恒温处理。研究表明,崇明东滩中潮间带互花米草的种子产量和活性最高,是提供有性扩散种源的主要区域,适合种子萌发温度的4-5月是互花米草进行有性扩散的主要季节。研究结果对了解互花米草有性繁殖扩散的时空格局和入侵生态学过程,以及有效控制和管理入侵物种互花米草提供了科学依据。
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| 关 键 词： | 互花米草 崇明东滩 种子产量 温度处理 种子萌发 |
| 收稿时间： | 2/7/2010 3:19:05 AM |
| 修稿时间： | 1/7/2011 12:00:00 AM |
Seed production of Spartina alterniflora and its response of germination to temperature at Chongming Dongtan, Shanghai |
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| ZhangLiQuan,ZHU Zhen-Chang and XIAO De-Rong.Seed production of Spartina alterniflora and its response of germination to temperature at Chongming Dongtan, Shanghai[J].Acta Ecologica Sinica,2011,31(6):1574-1581. |
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| Authors: | ZhangLiQuan ZHU Zhen-Chang and XIAO De-Rong |
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| Institution: | State Key Laboratory of Estuarine and Coastal Research, Shanghai Key Laboratory of Urbanization Ecological Process and Ecological Restoration, East China Normal University, Shanghai 200062, China;State Key Laboratory of Estuarine and Coastal Research, Shanghai Key Laboratory of Urbanization Ecological Process and Ecological Restoration, East China Normal University, Shanghai 200062, China;State Key Laboratory of Estuarine and Coastal Research, Shanghai Key Laboratory of Urbanization Ecological Process and Ecological Restoration, East China Normal University, Shanghai 200062, China |
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| Abstract: | The Chongming Dongtan Nature Reserve,one of the largest nature reserves for migratory birds in East Asia,is located on Chongming Island at the mouth of the Yangtze River.Since Spartina alterniflora was introduced into the Chongming Dongtan Nature Reserve in 1995,there has been a rapid expansion of this species,seriously threatening the overall biodiversity.The exotic plant S.alterniflora has expanded rapidly and formed a large area of mono-dominant community at Chongming Dongtan by its fast sexual reproduct... |
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| Keywords: | Spartina alterniflora Chongming Dongtan seed production temperature treatment seed germination |
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