干旱区生态环境知识资源中心(Arid): The Responses of Four Typical Annual Desert Species to Drought and Mixed Growth

Arid

DOI	10.3390/f13122140
	The Responses of Four Typical Annual Desert Species to Drought and Mixed Growth
	Gou, Qianqian; Xi, Lulu; Li, Yuda; Wang, Guohua
通讯作者	Wang, GH
来源期刊	FORESTS
EISSN	1999-4907
出版年	2022
卷号	13 期号:12
英文摘要	Soil desiccation is increasingly threatening the growth of vegetation in artificial forests at the margins of arid desert oases, where a variety of annual herbaceous plants coexist. It is important to understand the response of annual desert plants to droughts and mixed growth and the resulting patterns of change in photosynthetic and physiological properties. Our results showed that annual plants were primarily affected by drought stress, and the effect of interspecific competition was significant only under severe drought stress. In the sprouting stage, moderate drought increased seed germination rates, whereas severe drought stress decreased the germination rates. In the growth phase, the aboveground and belowground parts of annual herbaceous plants showed a synergistic response to drought. Under mild and moderate drought stress, annual herbaceous plants promoted photosynthesis by increasing chlorophyll content, thereby promoting plant stem growth. Following moderate and high drought, root vigor increased to maintain basic metabolic activities and annual herbaceous plants used the shadow and avoid response by increasing stem and root length to increase competitive ability. Under severe drought stress, planted seedling chlorophyll levels decreased, resulting in a simultaneous reduction in photosynthetic ability. The root growth of annual herbaceous plants depends on their photosynthesis ability but the decrease in biomass led to a decrease in root growth. The mixed habitat reduced the inhibition of seedling stem growth by drought stress and promoted plant growth.
英文关键词	annual herbaceous plants drought stress mixed growing germination physiology growth
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000901027300001
WOS关键词	INTERSPECIFIC COMPETITION ; SEED-GERMINATION ; VERTICAL-DISTRIBUTION ; OASIS ECOTONE ; WATER-DEFICIT ; HEXI CORRIDOR ; ROOT-GROWTH ; PLASTICITY ; GRASSLAND ; PATTERNS
WOS类目	Forestry
WOS研究方向	Forestry
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/392646
推荐引用方式 GB/T 7714	Gou, Qianqian,Xi, Lulu,Li, Yuda,et al. The Responses of Four Typical Annual Desert Species to Drought and Mixed Growth[J],2022,13(12).
APA	Gou, Qianqian,Xi, Lulu,Li, Yuda,&Wang, Guohua.(2022).The Responses of Four Typical Annual Desert Species to Drought and Mixed Growth.FORESTS,13(12).
MLA	Gou, Qianqian,et al."The Responses of Four Typical Annual Desert Species to Drought and Mixed Growth".FORESTS 13.12(2022).