| 高CO2条件下贝加尔针毛对土壤干旱胁迫响应的试验研究 |
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| 引用本文： | 高素华 郭建平 周广胜 杨利民. 高CO2条件下贝加尔针毛对土壤干旱胁迫响应的试验研究[J]. 应用气象学报, 2003, 14(2): 252-256 |
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| 作者姓名： | 高素华 郭建平 周广胜 杨利民 |
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| 作者单位： | 1.中国气象科学研究院, 北京 100081 |
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| 基金项目： | 国家重点基础发展规划项目“我国生存环境演变和北方干旱化趋势预测研究”(G19990 4 34 0 0 )资助 |
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| 摘 要： | 贝加尔针毛 (Stipa baicalensis) 是我国内蒙古东部和东北西部主要的地带性植被之一。通过人工模拟试验分析了CO2浓度升高对贝加尔针毛的“施肥”效应, 结果表明:贝加尔针毛的生物量、生长量随CO2浓度的升高而增加, 根中P的含量、叶中C、N、P的含量也随CO2浓度的升高而增加。土壤干旱胁迫对贝加尔针毛的生物量、生长量的影响均为负效应, 且干旱程度的加重使影响更明显。干旱使针毛叶、根中的C、N含量增加。
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| 关 键 词： | 贝加尔针毛 CO2浓度 干旱胁迫 |
| 收稿时间： | 2002-01-10 |
| 修稿时间： | 2002-01-10 |
Response of Stipa Baicalensis to Soil Drought Stress at High CO2 Concentration |
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| Gao Suhua Guo Jianping. Response of Stipa Baicalensis to Soil Drought Stress at High CO2 Concentration[J]. Journal of Applied Meteorological Science, 2003, 14(2): 252-256 |
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| Authors: | Gao Suhua Guo Jianping |
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| Affiliation: | 1.Chinese Academy of Meteorological Sciences, Beijing 1000812.Institute of Botany, Chinese Academy of Sciences, Beijing 100093 |
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| Abstract: | Stipa Baicalensis is one of regional herbs in the eastern Inner Mongol and the western Northeast China.Throug h an art if icial simulation experiment, the "fertilizat ion" effect of CO2 concent ration enrichment on Stipa baicalensis is analyzed.The results show that the biomass and growth value of the herbage, the Pcontent in the root, and C, N, P contents in the leaves increase with CO2 concentration enrichment.The impacts of soil drought stress on the biomass and grow th value are all negative.Mo reover, the impact is more remarkable with the agg ravating drought deg ree.Soil drought increases C, N contents in the herbage leaves and roots. |
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| Keywords: | Stipa baicalensis CO 2 concentration Drought stress |
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