干旱区生态环境知识资源中心(Arid): Durability of biocemented sand crusts under environmental stresses for wind erosion mitigation

Arid

DOI	10.1016/j.catena.2024.107900
	Durability of biocemented sand crusts under environmental stresses for wind erosion mitigation
	Yadollah-Roudbari, Mahdis; Soroush, Abbas; Fattahi, Seyed Mohammad; Komaei, Alireza
通讯作者	Soroush, A
来源期刊	CATENA
ISSN	0341-8162
EISSN	1872-6887
出版年	2024
卷号	238
英文摘要	This study investigates the durability of biocemented sand crust under environmental stresses for wind erosion control. The crusts were created through microbial precipitation of calcium carbonate via the bio-oxidation of calcium acetate using Bacillus megaterium bacteria. Various environmental stressors including heating and cooling cycles, wetting and drying cycles, freezing and thawing cycles, and exposure to ultraviolet radiation, were applied to examine the stability of the crusts. To evaluate erodibility, wind tunnel tests were conducted at different wind speeds as well as under a sandblasting condition. Additionally, crust strength was assessed through penetrometer tests. The microstructure of the crusts was analyzed using field emission scanning electron microscopy and x-ray diffraction. Results showed a remarkable reduction in the erosion rate of the treated sand, from 490 to 0.01 kg.m- 2.h-1, even at the highest tested wind speed (i.e., 28 m/s). However, after subjecting the crusts to five cycles each of heating and cooling, wetting and drying, freezing and thawing, and five equivalent years of ultraviolet radiation, the erodibility of the crust increased by factors of 2.4, 7.5, 24, and 32, respectively, compared to the treated samples without any environmental stress. Moreover, in the presence of saltating particles at a wind speed of 14 m/s, the erodibility of the crusts increased by 79 %, 458 %, 719 %, and 759 % respectively. The study emphasizes considering various environmental stresses for assessing crust durability, aiding the development of effective wind erosion control strategies in arid and semi -arid regions.
英文关键词	Wind erosion Biocementation Crust formation Environmental stresses Durability
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001188608100001
WOS关键词	BACTERIA ; SOIL
WOS类目	Geosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS研究方向	Geology ; Agriculture ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/403135
推荐引用方式 GB/T 7714	Yadollah-Roudbari, Mahdis,Soroush, Abbas,Fattahi, Seyed Mohammad,et al. Durability of biocemented sand crusts under environmental stresses for wind erosion mitigation[J],2024,238.
APA	Yadollah-Roudbari, Mahdis,Soroush, Abbas,Fattahi, Seyed Mohammad,&Komaei, Alireza.(2024).Durability of biocemented sand crusts under environmental stresses for wind erosion mitigation.CATENA,238.
MLA	Yadollah-Roudbari, Mahdis,et al."Durability of biocemented sand crusts under environmental stresses for wind erosion mitigation".CATENA 238(2024).