| 内蒙古短花针茅草原种子植物区系研究 |
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| 引用本文： | 张庆,牛建明,董建军,王凤兰,郭婧,丁勇,赵利清.内蒙古短花针茅草原种子植物区系研究[J].中国沙漠,2009,29(3):451-456. |
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| 作者姓名： | 张庆 牛建明 董建军 王凤兰 郭婧 丁勇 赵利清 |
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| 作者单位： | 1. 内蒙古大学生命科学学院,生态与环境科学系,内蒙古,呼和浩特,010021
2. 内蒙古大学生命科学学院,生态与环境科学系,内蒙古,呼和浩特,010021;内蒙古大学,中美生态、能源及可持续科学研究中心,内蒙古,呼和浩特,010021 |
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| 基金项目： | 国家重点基础研究发展规划(973计划)，国家自然科学基金，内蒙古草地生态学重点实验室--省部共建国家重点实验宦培育基地项目，内蒙古大学人才引进项目，教育部留学回国人员科研启动基金，513项目 |
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| 摘 要： | 对短花针茅草原种子植物科、属、种的区系特征进行了统计分析，结果表明：①研究区共统计种子植物31科，96属，161种，并集中分布在几个大科，区系的优势现象明显；②属种比为1∶1.68，较内蒙古自治区、全国及全世界均低，物种分化程度低；③植物区系组成具有明显的温带性质，但与热带植物区系也存在一定的亲缘关系，具有过渡性；④植物区系组成以年轻成分为主，兼有古老性；⑤植物生活型特征表明本区多年生草本植物占绝对优势，表现出草原植物群落种类组成的特征，但由于该区土壤覆沙或沙质化明显，因此，灌木和半灌木种类也较多；⑥植物水分生态类群以旱生为主，非旱生也占有很大比例，具有明显的过渡性；⑦该生态系统比较脆弱，应加强保护，合理利用，实现可持续性发展。
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| 关 键 词： | 短花针茅草原 植物区系 种子植物 内蒙古 |
| 收稿时间： | 2008-02-04; |
Floristic Study of Spermatophyte on Stipa breviflora Steppe Distributed in Inner Mongolia |
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| ZHANG Qing,NIU Jian-ming,DONG Jian-jun,WANG Feng-lan,GUO Jing,DING Yong,ZHAO Li-qing.Floristic Study of Spermatophyte on Stipa breviflora Steppe Distributed in Inner Mongolia[J].Journal of Desert Research,2009,29(3):451-456. |
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| Authors: | ZHANG Qing NIU Jian-ming DONG Jian-jun WANG Feng-lan GUO Jing DING Yong ZHAO Li-qing |
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| Institution: | 1.Department of Ecology and Environment Science, Inner Mongolia University, Hohhot 010021, China; 2.Sino-US Centre for Conservation, Energy and Sustainability Science, Inner Mongolia University, Hohhot 010021, China |
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| Abstract: | The flora characteristics of Stipa breviflora steppe in Inner Mongolia at different levels of family, genera and species were studied. ①The total of 161 species, belongs to 31 families and 96 genera of Spermatophyte, was counted. Most of them concentrated on several main families, which demonstrated floristic dominances obviously; ②The ratio of genera to species, 1/1.68, of the steppe was smaller than that of Inner Mongolia, China and of the world, represented the low level differentiation of species; ③The flora showed the composition of temperate zone remarkably, although there was a certain relationship with the flora of tropic zone. The transitional characteristics of the flora was clear; ④The flora was dominated by young components, while ancient ones played a companionate role; ⑤According to the statistics of life forms, perennial herbs dominated the steppe, which showed the features of plant species composition of steppe communities. However, there were a lot of shrubs and semi-shrubs due to the sandy soil covered many areas in this region; ⑥Compared with non-xerophytes that accounted for a large proportion, the xerophytes were still dominances. The transition in terms of ecological types of water was obvious, too; ⑦This steppe is fragile at present. It is necessary to strengthen the protection and to promote the rational utilization so as to implement sustainable development. |
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| Keywords: | Stipa breviflora steppe flora Spermatophyte Inner Mongolia |
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