干旱区生态环境知识资源中心(Arid): Microstructure and biodegradation of long-established Salix psammophila sand barriers on sand dunes

Arid

DOI	10.1016/j.eti.2021.101366
	Microstructure and biodegradation of long-established Salix psammophila sand barriers on sand dunes
	Wang, Ruidong; Gao, Yong; Dang, Xiaohong; Yang, Xia; Liang, Yumei; Zhao, Chen
通讯作者	Dang, XH (corresponding author), Inner Mongolia Agr Univ, Coll Desert Control Sci & Engn, Key Lab State Forest Adm Desert Ecosyst Protect &, Hohhot 010018, Peoples R China. ; Dang, XH (corresponding author), Inner Mongolia Hangjin Desert Ecol Posit Res Stn, Ordos 017400, Inner Mongolia, Peoples R China.
来源期刊	ENVIRONMENTAL TECHNOLOGY & INNOVATION
ISSN	2352-1864
出版年	2021
卷号	21
英文摘要	Salix psammophila has been extensively used as a sand barrier material for various desertification control applications over the years. Thus, elucidating the long-term degradation processes of this sand barrier in desert environments is of great importance. In this study, Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), scanning electron microscopy (SEM), and chemometric methods were used to evaluate and compare the structure and performance of the S. psammophila sand barrier during degradation. The results clearly showed that the structure and performance of the S. psammophila sand barrier varied in the different vertical sections of the barrier. With the increase in the setting period of the sand barriers, the atmospheric exposure section (AES) and stable sand buried section (SSBS) exhibited deterioration and decay, respectively. The mass loss rate was SSBS>AES>ASDI, which also exhibited different degrees of decrease in mechanical properties such as in the modulus of rupture, ultimately resulting in lodging, damage, and the loss of the function of the S. psammophila sand barrier in preventing wind-sand movement and fixing quicksand. Microstructural changes showed that after eight years of setting, the vessel and parenchyma cells were severely damaged and the corresponding chemical components, such as cellulose, hemicellulose, and lignin, were degraded to a certain extent. The decrease in the crystallinity index values based on the XRD analysis confirmed the deterioration and obvious changes in the crystallinity, which affected the strength of the S. psammophila sand barrier. The FT-IR analysis indicated that several characteristic peaks of cellulose, hemicellulose, and lignin in the AES and SSBS sections disappeared or were weakened compared with the ASDI section. Comprehensive analysis showed that the primary reason for the serious deterioration in AES was the aging caused by exposure to continuous UV radiation in the atmospheric environment, while the serious decay of SSBS was mainly caused by microbial and fungal activity in the sandy environment, ultimately leading to the degradation of the S. psammophila sand barrier. Our findings suggest that it is necessary to further strengthen the anti-aging and anti-corrosion measures in the resource utilization process of the S. psammophila sand barrier in the future. (C) 2021 Elsevier B.V. All rights reserved.
英文关键词	Salix psammophila sand barrie Desertification control FT-IR spectroscopy Long-term biodegradation Vegetative restoration X-ray diffraction
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000618241700007
WOS类目	Biotechnology & Applied Microbiology ; Engineering, Environmental ; Environmental Sciences
WOS研究方向	Biotechnology & Applied Microbiology ; Engineering ; Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/350178
作者单位	[Wang, Ruidong; Gao, Yong; Dang, Xiaohong; Yang, Xia; Liang, Yumei; Zhao, Chen] Inner Mongolia Agr Univ, Coll Desert Control Sci & Engn, Key Lab State Forest Adm Desert Ecosyst Protect &, Hohhot 010018, Peoples R China; [Dang, Xiaohong] Inner Mongolia Hangjin Desert Ecol Posit Res Stn, Ordos 017400, Inner Mongolia, Peoples R China
推荐引用方式 GB/T 7714	Wang, Ruidong,Gao, Yong,Dang, Xiaohong,et al. Microstructure and biodegradation of long-established Salix psammophila sand barriers on sand dunes[J],2021,21.
APA	Wang, Ruidong,Gao, Yong,Dang, Xiaohong,Yang, Xia,Liang, Yumei,&Zhao, Chen.(2021).Microstructure and biodegradation of long-established Salix psammophila sand barriers on sand dunes.ENVIRONMENTAL TECHNOLOGY & INNOVATION,21.
MLA	Wang, Ruidong,et al."Microstructure and biodegradation of long-established Salix psammophila sand barriers on sand dunes".ENVIRONMENTAL TECHNOLOGY & INNOVATION 21(2021).