干旱区生态环境知识资源中心(Arid): Effects of Film-Mulched Rock Outcrops on Rainwater Redistribution and Maize Growth in the Cropland of a Rocky Karst Area

Arid

DOI	10.3390/w16020254
	Effects of Film-Mulched Rock Outcrops on Rainwater Redistribution and Maize Growth in the Cropland of a Rocky Karst Area
	Zhao, Zhimeng; Deng, Jiabin; Zhang, Jin; Shen, Youxin; Alvino, Arturo
通讯作者	Zhao, ZM
来源期刊	WATER
EISSN	2073-4441
出版年	2024
卷号	16 期号:2
英文摘要	Film-mulched rock outcrops are a proven way to effectively prevent preferential flow at the rock-soil interface in rocky karst areas, but the impact on rainwater redistribution and maize growth in farmland areas has never been studied. This paper used the dye tracer method at a sprinkling intensity of 1 mm min-1 to study the rainwater redistribution in soils for three different treatments: away from rock (AR), close to rock (CR), and close to film-mulched rock (CFMR). The growth situation of maize (Zea mays L.) according to the different treatments was also studied. It was shown in the study that the rainwater gathered by rock outcrops was mainly confined only within a narrow flow path at the rock-soil interface in the CR treatment, with a preferential flow fraction of 35.78 similar to 55.54% and dyeing depth of 15.37 similar to 20.00 cm across the three dye application amounts (850 mL, 1700 mL, and 3400 mL) in contrast to the uniform distribution of the rainwater in the soil of the AR treatment, with a preferential flow fraction of 12.31 similar to 37.15% and dyeing depth of 6.93 similar to 14.00 cm. Interestingly, in the CFMR treatment, there was no preferential flow at the rock-soil interface benefiting from the film's blocking action, and the redistribution of rainwater was mainly based on the matrix flow, with a preferential flow fraction of 24.93 similar to 39.62% and dyeing depth of 10.27 similar to 18.00 cm, indicating that the film-mulched rock outcrops improved the rock's output capability for gathering rainwater into the surrounding soil. In addition, film-mulched rock outcrops can promote the growth of maize, as indicated by the results for plant height, stem diameter, maximum leaf area, SPAD value, and floral development of maize, which increased in order from AR, CR, to CFMR. Our study suggests that film-mulched rock outcrops have important implications for the efficient use of rainwater and the growth of crops in rocky karst areas, as well as in regions with similar geological characteristics.
英文关键词	film mulch maize rainfall redistribution rocky desertification farmland growth and development
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:001153011700001
WOS关键词	WATER ; DESERTIFICATION ; HETEROGENEITY ; EPIKARST ; SYSTEM ; IMPACT
WOS类目	Environmental Sciences ; Water Resources
WOS研究方向	Environmental Sciences & Ecology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/405845
推荐引用方式 GB/T 7714	Zhao, Zhimeng,Deng, Jiabin,Zhang, Jin,et al. Effects of Film-Mulched Rock Outcrops on Rainwater Redistribution and Maize Growth in the Cropland of a Rocky Karst Area[J],2024,16(2).
APA	Zhao, Zhimeng,Deng, Jiabin,Zhang, Jin,Shen, Youxin,&Alvino, Arturo.(2024).Effects of Film-Mulched Rock Outcrops on Rainwater Redistribution and Maize Growth in the Cropland of a Rocky Karst Area.WATER,16(2).
MLA	Zhao, Zhimeng,et al."Effects of Film-Mulched Rock Outcrops on Rainwater Redistribution and Maize Growth in the Cropland of a Rocky Karst Area".WATER 16.2(2024).