| 我国荒漠植被中的C4植物种类分布及其与气候的关系 |
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| 引用本文： | 苏培玺,解婷婷,周紫鹃.我国荒漠植被中的C4植物种类分布及其与气候的关系[J].中国沙漠,2011,31(2):267-276. |
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| 作者姓名： | 苏培玺 解婷婷 周紫鹃 |
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| 作者单位： | 中国科学院 寒区旱区环境与工程研究所 临泽内陆河流域研究站/植物逆境生理生态与生物技术实验室, 甘肃 兰州 730000 |
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| 基金项目： | 国家自然科学基金项目(3107035991025026)资助 |
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| 摘 要： | C4植物水分利用效率高于C3植物,CAM植物具有最高的水分利用效率。在我国荒漠地区,CAM植物稀少,C4植物,特别是C4木本植物在荒漠生态系统中具有重要地位和作用。我国荒漠地区有C4木本植物45种,包括半木本植物,占我国荒漠植物总种数的6%,集中在藜科和蓼科,分别为19种和26种。C4草本植物共计107种,其中单子叶植物48种,双子叶植物59种。C4木本植物主要分布在贺兰山以西的西北干旱荒漠区。C4草本植物的耐旱性和抗旱能力不如C4木本植物,主要分布在荒漠地区潜水埋深较浅,水分条件较好的区域,在绿洲边缘广泛分布。C4木本植物丰度与干旱紧密相关,C4草本植物丰度随湿润条件而增加。
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| 关 键 词： | 荒漠植物 C4光合作用 木本植物 地理分布 |
| 收稿时间： | 2010-10-19 |
| 修稿时间： | 2010-11-29 |
Geographical Distribution of C4 Plant Species in Desert Regions of China and its Relation with Climate Factors |
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| SU Pei-xi,XIE Ting-ting,ZHOU Zi-juan.Geographical Distribution of C4 Plant Species in Desert Regions of China and its Relation with Climate Factors[J].Journal of Desert Research,2011,31(2):267-276. |
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| Authors: | SU Pei-xi XIE Ting-ting ZHOU Zi-juan |
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| Institution: | Linze Inland River Basin Research Station/Laboratory of Plant Stress Ecophysiology and Biotechnology, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China |
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| Abstract: | Water use efficiency of C4 plants is higher than that of C3 plants,and CAM(Crassulaceae acid metabolism) plants have the highest water use efficiency.In the desert regions of China,CAM plants are scarce,and C4 plants,especially C4 woody plants,have an important position and role in the desert ecosystem.There are 45 species of C4 woody plants in the desert regions of China,including semi-woody plants,which account for 6% of total desert plant species in China,and most of them concentrate in the families of C... |
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| Keywords: | desert plant C4 photosynthesis woody plant geographical distribution |
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