干旱区生态环境知识资源中心(Arid): Soil saturated hydraulic conductivity of typical revegetated plants on steep gully slopes of Chinese Loess Plateau

Arid

DOI	10.1016/j.geoderma.2022.115717
	Soil saturated hydraulic conductivity of typical revegetated plants on steep gully slopes of Chinese Loess Plateau
	Zhu, Pingzong; Zhang, Guanghui; Zhang, Baojun
通讯作者	Zhang, GH
来源期刊	GEODERMA
ISSN	0016-7061
EISSN	1872-6259
出版年	2022
卷号	412
英文摘要	Soil saturated hydraulic conductivity (KS) is one of the most important hydraulic parameters for simulating water movement and solute transportation across soil profile, which is a highly variable in space. The changes in soil and vegetation properties induced by vegetation restoration (converting the steep farmland to woodland, shrub land, or grassland via artificial vegetation or natural succession) likely affect KS greatly. Nevertheless, few studies have been carried out to investigate the differences and vertical variations of K-S across soil profile in arid and semi-arid regions after vegetation restoration. This study was conducted to detect the differences and vertical variations of K-S across 0-200 cm soil profile under typical plants on steep gully slopes of the Loess Plateau and further to identify its dominant influencing factors. Undisturbed soil samples, collected from one bare land, two typical shrub lands, and four typical grasslands, were utilized to measure K-S using the constant head method. The results showed that the mean K-S varied from 0.21 to 1.47 mm min(-1), and a significant difference was found between plant of Carex lanceolata (CL) and other six plants (p < 0.05). Soil saturated hydraulic conductivity of all selected testing sites (except for CL) decreased logarithmically with the increase of soil depth. The variations in KS were significantly affected by soil and vegetation properties. K-S increased significantly with sand content, organic matter content (SOMC), saturated soil water content (SSWC), field capacity (FC), total porosity (TP), capillary porosity (CP), and root mass density (RMD), whereas decreased significantly with clay content and bulk density (BD). The results of partial least square regression revealed that RMD, SOMC, sand content, BD, and TP were the dominant factors attributing to the variations in K-S. Furthermore, K-S could be well estimated by RMD, CP and FC, and the result was more accurate compared to that estimated by the traditional pedotransfer function (PTF). These results are helpful for understanding water movement within soil profile and developing hydro-logical models in arid and semi-arid regions after vegetation restoration.
英文关键词	Saturated hydraulic conductivity Constant head method Partial least square regression Vegetation restoration Steep gully slope
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000797497600007
WOS关键词	VEGETATION RESTORATION ; SPATIAL VARIABILITY ; PHYSICAL-PROPERTIES ; WATER INFILTRATION ; SURFACE-ROUGHNESS ; SOLUTE TRANSPORT ; ORGANIC-MATTER ; ERODIBILITY ; PARAMETERS ; EROSION
WOS类目	Soil Science
WOS研究方向	Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/392911
推荐引用方式 GB/T 7714	Zhu, Pingzong,Zhang, Guanghui,Zhang, Baojun. Soil saturated hydraulic conductivity of typical revegetated plants on steep gully slopes of Chinese Loess Plateau[J],2022,412.
APA	Zhu, Pingzong,Zhang, Guanghui,&Zhang, Baojun.(2022).Soil saturated hydraulic conductivity of typical revegetated plants on steep gully slopes of Chinese Loess Plateau.GEODERMA,412.
MLA	Zhu, Pingzong,et al."Soil saturated hydraulic conductivity of typical revegetated plants on steep gully slopes of Chinese Loess Plateau".GEODERMA 412(2022).