Responses of ephemeral plant germination and growth to water and heat conditions in the southern part of Gurbantunggut Desert
文献类型：期刊论文
| 作者 | Wang Xueqing ; Jiang Jin ; Wang Yuanchao ; Luo Weilin ; Song Chunwu ; Chen Junjie |
| 刊名 | CHINESE SCIENCE BULLETIN
 |
| 出版日期 | 2006 |
| 卷号 | 51期号:s1页码:110-116 |
| 关键词 | PHENOLOGY |
| ISSN号 | 1001-6538 |
| 通讯作者 | Wang, XQ, Chinese Acad Sci, Xinjiang Inst Ecol & Geog, Urumqi 830011, Peoples R China |
| 中文摘要 | Ephemeral plants in the southern part of Gurbantunggut Desert were systematically monitored from 2002 to 2004 and the meteorological data and soil moisture during the same period were analyzed. The results show that the ephemeral plants germination and growth are sensitive to the changes of water and heat condition. The time for daily temperature over 0 degrees C in early spring in 2003 was delayed nearly 10 d compared with that in 2002, while the soil water changed little in the same period. Observation showed that there were 28 ephemeral species germinated in 2002, their life period was about 70 d in spring, and the maximum cover of ephemeral synusia reached 46.4%. However, only 17 ephemeral species germinated in 2003, their life period was about 50 d in spring, and their maximum cover was only 20.8%. The height of ephemeral plants was significantly higher in 2002 than that in 2003. It can be seen that ephemeral plant germination and growth in spring are strongly dependent on temperature. The changes of water conditions can affect ephemerals germination and growth as well. Because no heavy precipitation occurred during summer in 2002, only a few ephemerophytes were observed in autumn after ephemerals completed their life circle in early spring. However, about 60 mm precipitation was recorded from July to August both in 2003 and in 2004. Some ephemerals such as Erodium oxyrrhynchum and Carex physodes, etc. covered the dune surface rapidly with a cover > 10%. Therefore, the ephemerals not only germinate in autumn after the early spring, some species may germinate in summer if adequate rainfall occurs. The study on responses of ephemerals growth to water and heat conditions not only has a certain ecological significance but also contributes a better understanding to the effect of climate changes on the desert surface stability. |
| 学科主题 | 自然地理学 |
| 收录类别 | SCI |
| 公开日期 | 2011-08-19 |
| 源URL | [http://ir.xjlas.org/handle/365004/10428]  |
| 专题 | 新疆生态与地理研究所_中国科学院新疆生态与地理研究所(2010年以前数据) |
| 推荐引用方式 GB/T 7714 | Wang Xueqing,Jiang Jin,Wang Yuanchao,et al. Responses of ephemeral plant germination and growth to water and heat conditions in the southern part of Gurbantunggut Desert[J]. CHINESE SCIENCE BULLETIN,2006,51(s1):110-116. |
| APA | Wang Xueqing,Jiang Jin,Wang Yuanchao,Luo Weilin,Song Chunwu,&Chen Junjie.(2006).Responses of ephemeral plant germination and growth to water and heat conditions in the southern part of Gurbantunggut Desert.CHINESE SCIENCE BULLETIN,51(s1),110-116. |
| MLA | Wang Xueqing,et al."Responses of ephemeral plant germination and growth to water and heat conditions in the southern part of Gurbantunggut Desert".CHINESE SCIENCE BULLETIN 51.s1(2006):110-116. |
入库方式： OAI收割
来源：新疆生态与地理研究所
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