干旱区生态环境知识资源中心(Arid): The role of biochar particle size and application rate in promoting the hydraulic and physical properties of sandy desert soil

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DOI	10.1016/j.catena.2021.105607
	The role of biochar particle size and application rate in promoting the hydraulic and physical properties of sandy desert soil
	Fu, Guiquan; Qiu, Xiaona; Xu, Xianying; Zhang, Wen; Zang, Fei; Zhao, Chuanyan
通讯作者	Qiu, XN (corresponding author), Gansu Desert Control Res Inst, State Key Lab Breeding Base Desertificat & Aeolia, Gansu Minqin Natl Stn Desert Steppe Ecosyst Studi, Lanzhou 730070, Peoples R China. ; Zhao, CY (corresponding author), Lanzhou Univ, Minist Educ,Coll Pastoral Agr Sci & Technol, Minist Agr & Rural Affairs,Engn Res Ctr Grassland, State Key Lab Grassland Agroecosyst,Key Lab Grass, Lanzhou 730000, Peoples R China.
来源期刊	CATENA
ISSN	0341-8162
EISSN	1872-6887
出版年	2021
卷号	207
英文摘要	Enhancing the resistance of sandy desert soil to drought and wind erosion is key to controlling aeolian desertification. Using biochar as an amendment can improve soil quality. This study aimed to determine the impacts of biochar particle size and application rate on the hydraulic and physical properties of sandy desert soil. Biochars were produced by pyrolyzing corn straw at 500 degrees C with limited oxygen. Samples of sandy desert soil were collected from the Tengger Desert in Northwestern China. Tests were designed with three biochar particle sizes (0-0.25, 0.25-1, and 1-2 mm) and five biochar application rates (wt%: 0, 0.5%, 1%, 2%, and 4%). Soil hydraulic and physical properties were characterized by the soil-water characteristic curve, soil porosity, soil specific surface area (SSA), and soil structural index (SI). The results showed that biochar significantly increased the soil porosity and the number of extreme micropores, micropores, and small pores. As a consequence, the saturated soil water content (theta(s)), permanent wilting point (PWP), field capacity (FC), and available water content (AWC) were significantly enhanced. The significant improvement in SI demonstrated that biochar enhanced the soil aggregate stability, therefore, the resistance of sandy desert soil to wind erosion is enhanced. Biochar dosage was a more important factor that influenced the FC, AWC, PWP, SI, and SSA of the soil more than biochar particle size. The properties of theta(s), PWP, FC, AWC, and SI were all closely related to SSA, indicating that SSA played a key role in the mechanism affecting the response of the soil to biochar application. The significant increase in water retention and aggregate stability of sandy desert soil with added biochar suggests a novel strategy to control aeolian desertification by amending the soil.
英文关键词	Soil porosity Soil water retention Soil aggregate stability Soil specific surface area
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000703268900032
WOS关键词	ORGANIC-MATTER ; HYDROLOGICAL PROPERTIES ; WIND-TUNNEL ; WATER REPELLENCY ; AIR-FLOW ; QUALITY ; DESERTIFICATION ; STABILIZATION ; ADSORPTION ; SIMULATION
WOS类目	Geosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS研究方向	Geology ; Agriculture ; Water Resources
来源机构	兰州大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/362812
作者单位	[Fu, Guiquan; Qiu, Xiaona; Xu, Xianying; Zhang, Wen] Gansu Desert Control Res Inst, State Key Lab Breeding Base Desertificat & Aeolia, Gansu Minqin Natl Stn Desert Steppe Ecosyst Studi, Lanzhou 730070, Peoples R China; [Fu, Guiquan; Zang, Fei; Zhao, Chuanyan] Lanzhou Univ, Minist Educ,Coll Pastoral Agr Sci & Technol, Minist Agr & Rural Affairs,Engn Res Ctr Grassland, State Key Lab Grassland Agroecosyst,Key Lab Grass, Lanzhou 730000, Peoples R China; [Fu, Guiquan] Sun Yat Sen Univ, Guangdong Prov Key Lab Environm Pollut Control &, Guangzhou 510275, Peoples R China
推荐引用方式 GB/T 7714	Fu, Guiquan,Qiu, Xiaona,Xu, Xianying,et al. The role of biochar particle size and application rate in promoting the hydraulic and physical properties of sandy desert soil[J]. 兰州大学,2021,207.
APA	Fu, Guiquan,Qiu, Xiaona,Xu, Xianying,Zhang, Wen,Zang, Fei,&Zhao, Chuanyan.(2021).The role of biochar particle size and application rate in promoting the hydraulic and physical properties of sandy desert soil.CATENA,207.
MLA	Fu, Guiquan,et al."The role of biochar particle size and application rate in promoting the hydraulic and physical properties of sandy desert soil".CATENA 207(2021).