干旱区生态环境知识资源中心(Arid): Effects of Drought Stress on Annual Herbaceous Plants under Different Mixed Growth Conditions in Desert Oasis Transition Zone of the Hexi Corridor

Arid

DOI	10.3390/su142214956
	Effects of Drought Stress on Annual Herbaceous Plants under Different Mixed Growth Conditions in Desert Oasis Transition Zone of the Hexi Corridor
	Gou, Qianqian; Song, Bing; Li, Yuda; Xi, Lulu; Wang, Guohua
通讯作者	Wang, GH
来源期刊	SUSTAINABILITY
EISSN	2071-1050
出版年	2022
卷号	14 期号:22
英文摘要	Annual herbaceous plants are frequently layered under the artificial sand-fixing forest within the desert oasis transition zone of the Hexi Corridor. The effect of drought stress on annual herbaceous plants is of great significance to the restoration of artificial vegetation as well as the stability of the ecosystem in the desert oasis transition zone. Setaria viridis, Chloris virgata, Halogeton arachnoideus, and Bassia dasyphylla are the typical annual herbaceous plants that occur naturally in the Caragana korshinskii forest and were used as the research subject in this study. Concentration gradient tests were conducted under different mixed growth conditions: 0 (blank control group), 5, 10, and 15 C. korshinskii seeds, and different drought stress conditions: 0%, 2%, 5%, 10%, and 15%, in order to explore the interactive effects of drought stress on annual herbaceous plants. The results demonstrated that the germination percentage and germination rate of annual herbaceous plants was significantly affected by the number of C. korshinskii seeds (p < 0.05), whereby the germination effect was optimal when no C. korshinskii seeds were present. Furthermore, we found that the germination percentage and germination rate of the annual Gramineae was higher than that of the Chenopods. In the growth stage, the biomass and root-shoot ratio of the chenopods were significantly affected by the number of C. korshinskii seeds and drought stress (p < 0.05). We found that the biomass of annual herbaceous plants was the highest at 2% drought stress, and the root-shoot ratio displayed a positive correlation with an increase in drought stress. Notably, the survival rate of annual herbaceous plants was higher when grown in combination with five C. korshinskii seeds, thus indicating a positive interaction; in contrast, the survival rate decreased significantly when they were grown in combination with more than five C. korshinskii seeds, indicating a negative interaction. We observed a decreasing trend in root activity and chlorophyll content when annual herbaceous plants were grown in combination with an increasing number of C. korshinskii seeds and drought stress. The reduced root activity and decline in photosynthetic ability resulted in the inhibition of seedling growth. Furthermore, we found that the root activity and chlorophyll content of the Gramineae was similar to 1.3-2.0 times higher than that of the Chenopods, which may be the reason behind the lower survival rate of the chenopods.
英文关键词	arid desert area annual herbaceous plants drought stress mixed growth physiological
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E ; SSCI
WOS记录号	WOS:000887644000001
WOS关键词	PHYSIOLOGICAL-CHARACTERISTICS ; SEED-GERMINATION ; SEEDLINGS ; SOIL ; FACILITATION ; COMPETITION
WOS类目	Green & Sustainable Science & Technology ; Environmental Sciences ; Environmental Studies
WOS研究方向	Science & Technology - Other Topics ; Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/394681
推荐引用方式 GB/T 7714	Gou, Qianqian,Song, Bing,Li, Yuda,et al. Effects of Drought Stress on Annual Herbaceous Plants under Different Mixed Growth Conditions in Desert Oasis Transition Zone of the Hexi Corridor[J],2022,14(22).
APA	Gou, Qianqian,Song, Bing,Li, Yuda,Xi, Lulu,&Wang, Guohua.(2022).Effects of Drought Stress on Annual Herbaceous Plants under Different Mixed Growth Conditions in Desert Oasis Transition Zone of the Hexi Corridor.SUSTAINABILITY,14(22).
MLA	Gou, Qianqian,et al."Effects of Drought Stress on Annual Herbaceous Plants under Different Mixed Growth Conditions in Desert Oasis Transition Zone of the Hexi Corridor".SUSTAINABILITY 14.22(2022).