干旱区生态环境知识资源中心(Arid): Organic carbon and silt determining subcritical water repellency and field capacity of soils in arid and semi-arid region

Arid

DOI	10.3389/fenvs.2022.1031237
	Organic carbon and silt determining subcritical water repellency and field capacity of soils in arid and semi-arid region
	Mao, Jiefei; Li, Yaoming; Zhang, Junfeng; Zhang, Kun; Ma, Xuexi; Wang, Guangyu; Fan, Lianlian
通讯作者	Fan, LL
来源期刊	FRONTIERS IN ENVIRONMENTAL SCIENCE
EISSN	2296-665X
出版年	2022
卷号	10
英文摘要	Soil water repellency (SWR) is frequently observed in different types of land use and climates. Since SWR potentially enhances the difficulty of water infiltration in soil, the phenomenon can severely impact the water use of plants in arid regions. Therefore, understanding the origin of SWR is crucial in arid and semi-arid regions. This study investigated the fundamental and hydrological properties of soils in three arid ecosystems (desert, farmland, and forest). Analysis was done to determine any potential links between these properties, vegetation cover, and the severity of SWR. It was found that SWR was positively correlated with soil organic carbon (SOC), silt content, and field capacity of soil, where the SWR was in subcritical SWR range. The linear correlation and hierarchical clustering analysis confirmed that the SOC and silt content was the critical factor affecting the occurrence and persistence of SWR. The major source of organic carbon and nutrients to the soil was vegetation, which also had an impact on the distribution of soil carbon. The most striking observation was that the silt content was strongly correlated with both field capacity (r = 0.817, p = 0.001) and SWR (r = 0.710, p = 0.010), which can be attributed to the SOC on silt. In arid and semi-arid regions, the specific surface area of silt was relatively larger than that of sand. Meanwhile, compared to the clay in soil, the proportion of silt was much higher. The results imply that silt could significantly affect the soil hydrological properties and that silt content could serve as a new proxy for predicting water repellency in arid and semi-arid regions.
英文关键词	field capacity silt soil hydrophobicity soil organic carbon vegetation cover
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:000895331900001
WOS关键词	LAND-USE TYPES ; CONTACT-ANGLE ; SANDY SOIL ; MOISTURE ; FRACTIONS ; NITROGEN ; PATTERNS ; FOREST ; MATTER ; CLASSIFICATION
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/392715
推荐引用方式 GB/T 7714	Mao, Jiefei,Li, Yaoming,Zhang, Junfeng,et al. Organic carbon and silt determining subcritical water repellency and field capacity of soils in arid and semi-arid region[J],2022,10.
APA	Mao, Jiefei.,Li, Yaoming.,Zhang, Junfeng.,Zhang, Kun.,Ma, Xuexi.,...&Fan, Lianlian.(2022).Organic carbon and silt determining subcritical water repellency and field capacity of soils in arid and semi-arid region.FRONTIERS IN ENVIRONMENTAL SCIENCE,10.
MLA	Mao, Jiefei,et al."Organic carbon and silt determining subcritical water repellency and field capacity of soils in arid and semi-arid region".FRONTIERS IN ENVIRONMENTAL SCIENCE 10(2022).