Arid
ECOLOGICAL IMPLICATIONS AND ENVIRONMENT DEPENDENCE OF THE SEED GERMINATION OF COMMON SPECIES IN COLD DESERTS
Sun Yuan-Yuan1; Zhou Juan1; Liu Tong1; Liu Zun-Chi1; Hao Xiao-Ran1; Liu Hua-Feng1; Li Ru2
通讯作者Liu Tong
来源期刊PAKISTAN JOURNAL OF BOTANY
ISSN0556-3321
EISSN2070-3368
出版年2016
卷号48期号:3页码:983-992
英文摘要

Vegetation is increasingly affected by climate change in cold deserts. Nonetheless, research is limited regarding the natural environmental demands of seed germination in such deserts. This study was conducted in Gurbantunggut Desert as a research base and 17 common species as subjects to investigate the moisture and temperature needs of seed germination in artificial settings, as well as the relationship between characteristics of seed germination and the local distribution of dune and shrubs. Results showed square (1) all tested species generally display low germination percentages that range between 2.9% and 79.6%. Winter snow melt dictates seed germination in cold deserts. Moreover, the subsequent spring rainfall can increase the survival rate of seedlings and significantly affect the process of seed germination. (2) seeds start to germinate only two days after snow melts at the average daily temperature (day/night) of 3.5 degrees C (6.7 degrees C/-0.5 degrees C) and at a soil volumetric water content of 24.2%. Fifteen days after snow melt, all species germinate when the soil volumetric water content is 6.0% and the average daily temperature is 12.9 degrees C (18.3 degrees C/7.1 degrees C). (3) The seed germination of the tested species can be divided into four patterns: rapid, transitional, slow, and low. Low-pattern plants mainly grow on upper dunes and are significantly associated with shrubs. Rapid- and slow-pattern plants distribute in middle and lower dunes. A few of these plants are significantly associated with shrubs. Transitional-pattern plants generally develop in the low land between hills and middle dunes. This study provides a reference for the actual environmental needs of seed germination in cold deserts and for the temperature and moisture requirements of this process in future experimental settings.


英文关键词Snow melt Seed germination Germination pattern Inter-specific association Nursing effect
类型Article
语种英语
国家Peoples R China
收录类别SCI-E
WOS记录号WOS:000378210700017
WOS关键词GURBANTUNGGUT DESERT ; CLIMATE-CHANGE ; SAND DUNES ; PLANT ; DORMANCY ; STORAGE ; TEMPERATURE ; PATTERNS ; GROWTH
WOS类目Plant Sciences
WOS研究方向Plant Sciences
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/195291
作者单位1.Shihezi Univ, Coll Life Sci, Shihezi 832003, Peoples R China;
2.Shihezi Univ, Coll Foreign Languages, Shihezi 832003, Xinjiang, Peoples R China
推荐引用方式
GB/T 7714
Sun Yuan-Yuan,Zhou Juan,Liu Tong,et al. ECOLOGICAL IMPLICATIONS AND ENVIRONMENT DEPENDENCE OF THE SEED GERMINATION OF COMMON SPECIES IN COLD DESERTS[J],2016,48(3):983-992.
APA Sun Yuan-Yuan.,Zhou Juan.,Liu Tong.,Liu Zun-Chi.,Hao Xiao-Ran.,...&Li Ru.(2016).ECOLOGICAL IMPLICATIONS AND ENVIRONMENT DEPENDENCE OF THE SEED GERMINATION OF COMMON SPECIES IN COLD DESERTS.PAKISTAN JOURNAL OF BOTANY,48(3),983-992.
MLA Sun Yuan-Yuan,et al."ECOLOGICAL IMPLICATIONS AND ENVIRONMENT DEPENDENCE OF THE SEED GERMINATION OF COMMON SPECIES IN COLD DESERTS".PAKISTAN JOURNAL OF BOTANY 48.3(2016):983-992.
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