干旱区生态环境知识资源中心(Arid): Effects of rock fragments on the water infiltration and hydraulic conductivity in the soils of the desert steppes of Inner Mongolia, China

Arid

DOI	10.17221/107/2020-SWR
	Effects of rock fragments on the water infiltration and hydraulic conductivity in the soils of the desert steppes of Inner Mongolia, China
	Wu, Xiaolong; Meng, Zhongju; Dang, Xiaohong; Wang, Ji
通讯作者	Wang, J (corresponding author), Inner Mongolia Agr Univ, Coll Desert Control Sci & Engn, Hohhot, Peoples R China.
来源期刊	SOIL AND WATER RESEARCH
ISSN	1801-5395
EISSN	1805-9384
出版年	2021
卷号	16 期号:3 页码:151-163
英文摘要	Soils that contain rock fragments (particles > 2 mm in diameter) are distributed all over the world. The presence of these small rock fragments can have a great impact on soil water retention properties, as well as on the soil-water infiltration and vegetation restoration in semi-arid regions. To quantitatively describe the transport of water in stony soils, repacked soil cores were used to determine the infiltration rates for different rock fragment contents (0%, 10%, 20%, 30%, and 40%) and rock fragment sizes (2-5, 5-8, 8-11, and 2-11 mm). The results showed that both the content and size of the rock fragments and their interaction significantly affected the infiltration process. The infiltration rates over time and the saturated hydraulic conductivity (Ks) decreased with an increasing rock fragment content to an observed minimum value for a 40% rock fragment content. The soil-water infiltration processes were accurately described by the Kostiakov model. The measured and calculated Ks values decreased with an increasing rock fragment content, which was in accordance with the published data and in accordance with the Ks obtained by five empirical methods. The variations in the measured Ks were likely due to the variations in the soil properties caused by the soil sample repacking. The results of this study may improve the understanding of the effects of the rock fragment content and size on the infiltration processes in arid and semi-arid desert steppes.
英文关键词	arid grassland rock fragment content rock fragment size saturated hydraulic conductivity soil infiltration rate
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:000664965700002
WOS关键词	STONY SOILS ; LOESS PLATEAU ; SOLUTE TRANSPORT ; PHYSICAL-PROPERTIES ; FLOW VELOCITY ; LAND-USE ; EROSION ; SLOPE ; CAPACITY ; POROSITY
WOS类目	Soil Science ; Water Resources
WOS研究方向	Agriculture ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/351777
作者单位	[Wu, Xiaolong; Meng, Zhongju; Dang, Xiaohong; Wang, Ji] Inner Mongolia Agr Univ, Coll Desert Control Sci & Engn, Hohhot, Peoples R China
推荐引用方式 GB/T 7714	Wu, Xiaolong,Meng, Zhongju,Dang, Xiaohong,et al. Effects of rock fragments on the water infiltration and hydraulic conductivity in the soils of the desert steppes of Inner Mongolia, China[J],2021,16(3):151-163.
APA	Wu, Xiaolong,Meng, Zhongju,Dang, Xiaohong,&Wang, Ji.(2021).Effects of rock fragments on the water infiltration and hydraulic conductivity in the soils of the desert steppes of Inner Mongolia, China.SOIL AND WATER RESEARCH,16(3),151-163.
MLA	Wu, Xiaolong,et al."Effects of rock fragments on the water infiltration and hydraulic conductivity in the soils of the desert steppes of Inner Mongolia, China".SOIL AND WATER RESEARCH 16.3(2021):151-163.