干旱区生态环境知识资源中心(Arid): In situ effect of combined utilization of fly ash and polyacrylamide on sand stabilization in North China

Arid

DOI	10.1016/j.catena.2018.08.022
	In situ effect of combined utilization of fly ash and polyacrylamide on sand stabilization in North China
	Wang, Yitong 1; Yang, Kai 2; Tang, Zejun 1
通讯作者	Yang, Kai ; Tang, Zejun
来源期刊	CATENA
ISSN	0341-8162
EISSN	1872-6887
出版年	2019
卷号	172 页码:170-178
英文摘要	A field experiment was conducted to investigate the resistance to wind erosion of consolidated soil layer (CSL) on the edge of Ulan Buh Desert in Inner Mongolia, China under natural conditions during Aug. 2015-Apr. 2016. The CSLs consisted of sandy soil, fly ash (FA) (5%, 10% and 15% (w/w) soil) and polyacrylamide (PAM) (0.05% and 0.1% (w/w) soil). The experimental site was divided equally into Regions A and B where dry FA and PAM powder were applied in two ways in mid-Jul. 2015. In Region A, FA and PAM were mixed homogeneously with the 0-0.3 m depth topsoil. In Region B, FA alone was mixed homogeneously with the 0-0.3 m depth topsoil. PAM was then scattered uniformly on top of the surface layer. Finally, CSLs were formed by spraying an appropriate amount of water onto the surface to dissolve PAM fully and being equilibrated for one week to achieve a moisture content close to the initial soil moisture content (0.6%). It was found that during 2-26 Aug. 2015, the wind erosion rate (WER) was reduced most significantly by 77% in CSL (10%FA + 0.05%PAM) in Region A and by 58% in CSL (10%FA + 0.1%PAM) in Region B compared with control (CK) (WER = 10.2 kg/m(2)). However, during 3-27 Sep. 2015, there was no significant difference in WER between treatments in Regions A and B compared with CK (WER = 1.4 kg/m(2)). Whereas, during the following longer period of wind erosion (viz. 27 Sep. 2015-21 Apr. 2016), the WER was reduced most significantly by 69% in CSL (5%FA + 0.1%PAM) in Region A and by 32% in CSL (5%FA + 0.05%PAM) in Region B compared with CK (WER = 80.7 kg/m(2)). The resistance to wind erosion of CSL in Region A was much stronger than in Region B. The WER of CSL was influenced by wind conditions including wind speed and direction. Precipitation also had an impact on the WER of CSL as the cohesive effect of PAM can be influenced by precipitation. The CSL as a mixture of sandy soil, FA and PAM is recommended for wind erosion control.
英文关键词	Wind erosion control Consolidated soil layer (CSL) Fly ash (FA) Anionic polyacrylamide (PAM)
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000449136800018
WOS关键词	WIND EROSION CONTROL ; INNER-MONGOLIA ; TUNNEL ; PAM
WOS类目	Geosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS研究方向	Geology ; Agriculture ; Water Resources
来源机构	中国农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/214807
作者单位	1.China Agr Univ, Coll Water Resources & Civil Engn, Beijing 100083, Peoples R China; 2.Qilu Univ Technol, Shandong Acad Sci, Adv Mat Inst, Jinan 250014, Shandong, Peoples R China
推荐引用方式 GB/T 7714	Wang, Yitong,Yang, Kai,Tang, Zejun. In situ effect of combined utilization of fly ash and polyacrylamide on sand stabilization in North China[J]. 中国农业大学,2019,172:170-178.
APA	Wang, Yitong,Yang, Kai,&Tang, Zejun.(2019).In situ effect of combined utilization of fly ash and polyacrylamide on sand stabilization in North China.CATENA,172,170-178.
MLA	Wang, Yitong,et al."In situ effect of combined utilization of fly ash and polyacrylamide on sand stabilization in North China".CATENA 172(2019):170-178.