| 红松和蒙古栎种子萌发及幼苗生长对升温与降水综合作用的响应 |
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| 引用本文： | 赵娟,宋媛,孙涛,毛子军,刘传照,刘林馨,刘瑞鹏,侯玲玲,李兴欢.红松和蒙古栎种子萌发及幼苗生长对升温与降水综合作用的响应[J].生态学报,2012,32(24):7791-7800. |
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| 作者姓名： | 赵娟 宋媛 孙涛 毛子军 刘传照 刘林馨 刘瑞鹏 侯玲玲 李兴欢 |
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| 作者单位： | 1. 东北林业大学森林植物生态学教育部重点实验室,哈尔滨,150040
2. 东北林业大学凉水国家级自然保护区,伊春,153000 |
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| 基金项目： | 国家自然科学基金资助项目(31070350);"973"国家重点基础研究项目发展计划项目(2010CB951301) |
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| 摘 要： | 研究气候变暖导致的温度升高和降水格局的变化对典型植被类型建群种植物种子萌发和幼苗存活的影响,对于预测森林群落的发展趋势、种质资源保育及森林抚育更新具有重要意义.以寒温带针阔混交林的建群种和优势种红松Pinus koraiensis、蒙古栎Quercus mongolica种子和幼苗为研究对象,采用空间替代法模拟温度升高和降水变化,观察其种子萌发和幼苗生长情况.结果表明:与种源地相比,蒙古栎种子在温度升高与降水增加(年均温+4.9℃,+330 mm)或降水减少(年均温+2.8℃,-249 mm)的条件下萌发率分别下降了13％和18％,但差异不显著.红松种子在温度升高与降水增加的情况下萌发率比种源地提高了2.29倍,而降水减少时则下降了64％,不同的地点对红松的萌发率差异极显著;不同的温度、降水组合对红松和蒙古栎幼苗的生长均产生不同影响,在温度升高与降水增加与降水减少的情况下,1年生蒙古栎幼苗的株高、基径和主根长度均有明显下降,与种源地差异显著,而对红松幼苗生长的影响差异不显著;温度升高和降水增加或降水减少的交互作用使蒙古栎幼苗和红松幼苗总生物量下降,尤其是在温度升高与降水增加的条件下两种幼苗的生物量最小,分别比种源地下降了62％和20％.但统计分析表明,红松幼苗生物量在3个样地间没有显著差异.温度升高和降水变化均降低了两种幼苗的根冠比,而比叶面积没有显著差异.
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| 关 键 词： | 气候变化 温度增加 降水格局 生物量 根冠比 比叶面积 |
| 收稿时间： | 4/6/2012 12:00:00 AM |
| 修稿时间： | 2012/8/22 0:00:00 |
Response of seed germination and seedling growth of Pinus koraiensis and Quercus mongolica to comprehensive action of warming and precipitation |
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| ZHAO Juan,SONG Yuan,SUN Tao,MAO Zijun,LIU Chuanzhao,LIU Linxin,LIU Ruipeng,HOU Lingling and LI Xinghuan.Response of seed germination and seedling growth of Pinus koraiensis and Quercus mongolica to comprehensive action of warming and precipitation[J].Acta Ecologica Sinica,2012,32(24):7791-7800. |
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| Authors: | ZHAO Juan SONG Yuan SUN Tao MAO Zijun LIU Chuanzhao LIU Linxin LIU Ruipeng HOU Lingling and LI Xinghuan |
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| Institution: | Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin 150040, China;Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin 150040, China;Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin 150040, China;Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin 150040, China;Liangshui National Nature Reserve,Northeast Forestry University,Yichun 153000,China;Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin 150040, China;Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin 150040, China;Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin 150040, China;Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin 150040, China |
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| Abstract: | |
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| Keywords: | climate change temperature increase precipitation pattern biomass root-shoot ratio specific leaf area |
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