干旱区生态环境知识资源中心(Arid): Responses of Amygdalus pedunculata Pall. in the sandy and loamy soils to water stress

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	Responses of Amygdalus pedunculata Pall. in the sandy and loamy soils to water stress
	Pei Yanwu; Huang Laiming; Shao Ming'; an; Zhang Yinglong
来源期刊	干旱区科学
ISSN	1674-6767
出版年	2020
卷号	12 期号:5
英文摘要	Amygdalus pedunculata Pall. is a major species that is widely planted in afforested soils with different textures in the transitional zone between Mu Us Desert and Loess Plateau, China. However, the responses of A. pedunculata to increasing intensity of water stress in different textural soils are not clear. Here, we conducted a soil column experiment to evaluate the effects of different textures (sandy and loamy) on water consumption, water use efficiency (WUE), biomass accumulation and ecological adaptability of A. pedunculata under increasing water stress, i.e., 90% (5%) FC (field capacity), 75% (5%) FC, 60% (5%) FC, 45% (5%) FC and 30% (5%) FC in 2018. A. pedunculata grown in the sandy soil with the lowest (30% FC) and highest (90% FC) water contents had respectively 21.3%-37.0% and 4.4%-20.4% less transpiration than those with other water treatments (45%-75% FC). In contrast, A. pedunculata transpiration in the loamy soil decreased with decreasing water content. The magnitude of decrease in transpiration increased with increasing level of water deficit (45% and 30% FC). Mean daily and cumulative transpirations of the plant were significantly lower in the sandy soil than in the loamy soil under good water condition (90% FC), but the reverse was noted under water deficit treatments (45% and 30% FC). Plant height, stem diameter and total biomass initially increased with decreasing water content from 90% to 75% FC and then declined under severe water deficit conditions (45% and 30% FC) in the sandy soil. However, these plant parameters decreased with decreasing water content in the loamy soil. WUE in the sandy soil was 7.8%-12.3% higher than that in the loamy soil, which initially increased with decreasing water content from 90% to 75% FC and then declined under water deficit conditions (45% and 30% FC). The study showed that plant transpiration, biomass production and WUE responded differentially to increasing intensity of water stress in the sandy and loamy soils. The contrasting responses of A. pedunculata to water stress in different textural soils can guide future revegetation programs in the northern region of Chinese Loess Plateau by considering plant adaptability to varying soil and water conditions.
英文关键词	soil texture water consumption biomass production water use efficiency Loess Plateau
类型	Article
语种	英语
收录类别	CSCD
WOS类目	Agriculture
CSCD记录号	CSCD:6866300
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/353497
推荐引用方式 GB/T 7714	Pei Yanwu,Huang Laiming,Shao Ming',et al. Responses of Amygdalus pedunculata Pall. in the sandy and loamy soils to water stress[J],2020,12(5).
APA	Pei Yanwu,Huang Laiming,Shao Ming',an,&Zhang Yinglong.(2020).Responses of Amygdalus pedunculata Pall. in the sandy and loamy soils to water stress.干旱区科学,12(5).
MLA	Pei Yanwu,et al."Responses of Amygdalus pedunculata Pall. in the sandy and loamy soils to water stress".干旱区科学 12.5(2020).