干旱区生态环境知识资源中心(Arid): Mechanisms of grazing management impact on preferential water flow an infiltration patterns in a semi-arid grassland in northern China

Arid

DOI	10.1016/j.scitotenv.2021.152082
	Mechanisms of grazing management impact on preferential water flow an infiltration patterns in a semi-arid grassland in northern China
	Wu, Xiaolong; Dang, Xiaohong; Meng, Zhongju; Fu, Dongsheng; Cong, Wencheng; Zhao, Feiyan; Guo, Jingjie
通讯作者	Meng, ZJ
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2022
卷号	813
英文摘要	Grazing management is widely used to control grassland degradation in Inner Mongolia. However, the correlation between the soil physical properties, root traits, and infiltration patterns of different types of grazing management has seldom been studied. To reveal the effect of grazing management on water infiltration and preferential flow behavior, we first investigated the soil and plant properties in a grazing exclusion (19 years, GE), cold-season grazing (19 years, CG), and free-grazing grassland (19 years, FG) in a semi-arid grassland in Inner Mongolia. Dye tracer infiltration was adopted to obtain the water infiltration patterns from different types of grazing management. Finally, root biomass and root morphological traits were measured in a field experiment. The results showed that the plant height, vegetation coverage, richness index, Shannon-Wiener index, soil water content, total porosity, and mean weight diameter were higher at the GE site than at the FG site, whereas soil bulk density and sand content were lower at the GE site than at the FG site (P < 0.05). In addition, the root mean diameter, specific root length, and root mass density were higher at the GE site than at the FG site. As a result, differences in these root traits and soil and vegetation properties affected the preferential water flow behavior in the three types of grassland. The preferential flow evaluation index (P-FI) of the GE, CG, and FG sites was 0.89, 0.30, and 0.15, respectively, which indicated that more obvious preferential flow occurred at the GE site than at the CG and FG sites. These findings highlight that the long-term GE enhanced plant density and root biomass, which could potentially promote the natural restoration of soil pores and preferential water infiltration. Therefore, local governments and herders should implement GE rather than other grazing management practices to prevent grassland degradation.
英文关键词	Grazing management Preferential flow Dye tracer Grassland degradation Semi-arid area
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000767232600006
WOS关键词	SOIL-WATER ; INNER-MONGOLIA ; PLANT DIVERSITY ; MACROPORE FLOW ; DESERT STEPPE ; LOESS PLATEAU ; DYE TRACER ; EXCLUSION ; VEGETATION ; SYSTEM
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/2XILL650/394343
推荐引用方式 GB/T 7714	Wu, Xiaolong,Dang, Xiaohong,Meng, Zhongju,et al. Mechanisms of grazing management impact on preferential water flow an infiltration patterns in a semi-arid grassland in northern China[J],2022,813.
APA	Wu, Xiaolong.,Dang, Xiaohong.,Meng, Zhongju.,Fu, Dongsheng.,Cong, Wencheng.,...&Guo, Jingjie.(2022).Mechanisms of grazing management impact on preferential water flow an infiltration patterns in a semi-arid grassland in northern China.SCIENCE OF THE TOTAL ENVIRONMENT,813.
MLA	Wu, Xiaolong,et al."Mechanisms of grazing management impact on preferential water flow an infiltration patterns in a semi-arid grassland in northern China".SCIENCE OF THE TOTAL ENVIRONMENT 813(2022).