| 蒙古韭(Allium mongolicum)的分布和结实特性 |
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| 引用本文： | 张莹花,刘世增,尉秋实,何芳兰,张进虎.蒙古韭(Allium mongolicum)的分布和结实特性[J].中国沙漠,2014,34(2):391-395. |
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| 作者姓名： | 张莹花 刘世增 尉秋实 何芳兰 张进虎 |
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| 作者单位： | 甘肃省治沙研究所 甘肃省荒漠化与风沙灾害防治省部共建国家重点实验室, 甘肃 兰州 730070 |
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| 基金项目： | 甘肃省自然科学基金项目(1010RJZA192)资助 |
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| 摘 要： | 为掌握蒙古韭(Allium mongolicum)在中国的分布现状和种群发展趋势,采用野外踏查和栽培实验相结合的方法,对其地理分布范围进行了界定;以结实量调查数据为基础,分析了不同分布区域蒙古韭的结实特点以及影响因素。结果显示:(1)蒙古韭在中国的分布区约在36°28′—46°14′N、88°39′—116°05′E之间,包括陕西、甘肃、宁夏、内蒙古、新疆、青海6省(区)。(2)由于生境差异,蒙古韭不同群落中物种组成差异很大,蒙古韭多为伴生种或偶见种,很少为优势种。(3)不同生境条件下蒙古韭的结实特性差异较大,多数地区没有结实或结实率很小,主要是因为干旱导致其生殖生长受阻,加之人为因素干扰,使蒙古韭不能正常完成其生活史。
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| 关 键 词： | 蒙古韭(Allium mongolicum) 地理分布 结实特性 |
| 收稿时间： | 2012-11-30; |
Geographical Distribution and Seed Characteristics of Allium mongolicum in China |
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| Zhang Yinghua,Liu Shizeng,Yu Qiushi,He Fanglan,Zhang Jinhu.Geographical Distribution and Seed Characteristics of Allium mongolicum in China[J].Journal of Desert Research,2014,34(2):391-395. |
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| Authors: | Zhang Yinghua Liu Shizeng Yu Qiushi He Fanglan Zhang Jinhu |
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| Institution: | State Key Laboratory of Desertification and Aeolian Sand Disaster Combating, Gansu Desert Control Research Institute, Lanzhou 730070, China |
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| Abstract: | In order to ascertain the geographical distribution of Allium mongolicum in China, we surveyed all possible areas in North China. It showed that: (1) A. mongolicum was distributed between 36°28'—46°14'N and 88°39'—116°05'E, including Shaanxi, Gansu, Ningxia, Inner Mongolia, Xinjiang and Qinghai province. (2) In different circumstances, species composition among A. mongolicum community was different. Most of them were accompanying species or occasional species and few of them were dominant species. (3) In different circumstances, seed characteristic of A. mongolicum was different. In some populations, there were not any seed or few seeds on individual of A. mongolicum. Water was an important factor influencing seed quantity. The human factor aggravated the decreasing of A. mongolicum resources. |
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| Keywords: | Allium mongolicum" target="_blank">Allium mongolicum')" href="#">Allium mongolicum geographical distribution seed characteristics |
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