干旱区生态环境知识资源中心(Arid): Mineralization crust field experiment for desert sand solidification based on enzymatic calcification

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DOI	10.1016/j.jenvman.2021.112315
	Mineralization crust field experiment for desert sand solidification based on enzymatic calcification
	Sun, Xiaohao; Miao, Linchang; Wang, Hengxing; Yin, Wenhua; Wu, Linyu
通讯作者	Sun, XH ; Miao, LC (corresponding author), Southeast Univ, Inst Geotech Engn, Nanjing 210096, Jiangsu, Peoples R China.
来源期刊	JOURNAL OF ENVIRONMENTAL MANAGEMENT
ISSN	0301-4797
EISSN	1095-8630
出版年	2021
卷号	287
英文摘要	Sandstorms have been recognized as severe natural disasters worldwide and it is of great significance to propose an effective and environmentally friendly method to combat sandstorm. In this study, the enzymatic calcification (EC) treatment technology was used for mineralization crust and desert sand solidification. Both laboratory experiments and field site tests were conducted to demonstrate the feasibility of EC treatment to improve winderosion resistance and rainfall-erosion resistance. Results showed that with the concentration of reactants higher than 0.25 M or the ratio of urease solution to the cementation solution above 0.8, the improvement effects of wind-erosion resistance and rainfall-erosion resistance decreased. Therefore, the 0.25 M of reagent concentration and 0.8 of ratio of urease solution to the cementation solution were chosen for subsequent field site test. The two test sites had similar CaCO3 contents, thus obtaining a similar increasing range of surface strength. However, the test site one had larger surface strengths due to thicker cemented crust layers. Both the two test sites had sufficient wind-erosion resistance because of crust layer. Moreover, rainfalls decreased surface strength; the surface strength recovered to a high level after water evaporation. In addition, the effect of rainfall on thickness of crust layer and CaCO3 was small. The EC treatment had good ecological compatibility, and the combined EC and grass seed treatment was effective for mitigation of desertification. The results demonstrated that EC treatment significantly improved both wind-erosion and rainfall-erosion resistance, which presents promising potential for anti-desertification.
英文关键词	Enzymatic calcification Crust layer Wind erosion Rainfall erosion Ecological compatibility
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000639202900007
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/2XILL650/350796
作者单位	[Sun, Xiaohao; Miao, Linchang; Wang, Hengxing; Wu, Linyu] Southeast Univ, Inst Geotech Engn, Nanjing 210096, Jiangsu, Peoples R China; [Yin, Wenhua] China Design Grp Co LDT, Yinchuan 210014, Ningxia, Peoples R China
推荐引用方式 GB/T 7714	Sun, Xiaohao,Miao, Linchang,Wang, Hengxing,et al. Mineralization crust field experiment for desert sand solidification based on enzymatic calcification[J],2021,287.
APA	Sun, Xiaohao,Miao, Linchang,Wang, Hengxing,Yin, Wenhua,&Wu, Linyu.(2021).Mineralization crust field experiment for desert sand solidification based on enzymatic calcification.JOURNAL OF ENVIRONMENTAL MANAGEMENT,287.
MLA	Sun, Xiaohao,et al."Mineralization crust field experiment for desert sand solidification based on enzymatic calcification".JOURNAL OF ENVIRONMENTAL MANAGEMENT 287(2021).