Effects of freeze-thaw cycles on the physicochemical characteristics of animal manure and its phosphorus forms

doi:10.1016/j.wasman.2019.03.039

	Effects of freeze-thaw cycles on the physicochemical characteristics of animal manure and its phosphorus forms
	Chen, Xingcai 1; Gao, Min 1; Li, Yanxia 1; Zhang, Xuelian 2; Zhang, Fengsong 3; Hu, Baiyang 1
刊名	WASTE MANAGEMENT
	2019-04-01
卷号	88 页码:160-169
关键词	Freeze-thaw cycles Phosphorus forms Pig manure Particle size Moisture content
ISSN号	0956-053X
DOI	10.1016/j.wasman.2019.03.039
通讯作者	Li, Yanxia(liyxbnu@bnu.edu.cn)
英文摘要	The variations of phosphorus (P) in animal manure during freeze-thaw cycles (FTCs) profoundly influence on non-point source P loss in winter. Therefore, understanding how FTCs influence the physicochemical properties of animal manure and its P availability is crucial. In this study, the freeze-thaw treatment was performed by incubating the pig manure at -20 degrees C for 12 h and at 18 degrees C for 12 h. The freeze-only treatment was maintained at -20 degrees C as a control. In addition, the pig manure was kept at two moisture levels during the FTCs and sampled every five cycles. Six forms of Pin the manure were extracted and analyzed. After 30 cycles, the dissolved organic carbon had increased from 10.49 to 13.56 g/kg, and the pH had decreased from 6.25 to 5.77. The particles originally >1000 mu m were broken into particles <250 mu m. The forms of P in manure shifted from Ca-P, occluded P, and residual P towards NH4Cl-P, Al-P and Fe-P, resulting in a 23% increase in bioavailable P. These variations were highly coincident with the increase in moisture content and FTC frequency. The proportion of particles <38 mu m increased by more than 2% after the FTCs, and the manure P was mainly concentrated in these particles, which might be readily washed away by the melt water. Overall, the study indicated that FTCs could enhance the bioavailability of P in pig manure and the mobility of particle-associated P. These findings are significant for reducing animal manure pollution in freeze-thaw season. (C) 2019 Elsevier Ltd. All rights reserved.
资助项目	National Natural Science Foundation of China, China[21577007] ; National Key Research and Development Program of China, China[2016YFD0800204] ; Inter discipline Research Funds of Beijing Normal University, China
WOS关键词	AGGREGATE SIZE DISTRIBUTION ; SOIL ORGANIC-MATTER ; PARTICLE-SIZE ; MICROBIAL COMMUNITIES ; PIG MANURE ; RUNOFF ; NITROGEN ; LOSSES ; CARBON ; FRACTIONS
WOS研究方向	Engineering ; Environmental Sciences & Ecology
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000471359300017
资助机构	National Natural Science Foundation of China, China ; National Key Research and Development Program of China, China ; Inter discipline Research Funds of Beijing Normal University, China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/58683]
专题	中国科学院地理科学与资源研究所
通讯作者	Li, Yanxia
作者单位	1.Beijing Normal Univ, Sch Environm, State Key Lab Water Environm Simulat, Beijing 100875, Peoples R China 2.Beijing Soil & Fertilizer Extens Serv Stn, Beijing 100029, Peoples R China 3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
推荐引用方式 GB/T 7714	Chen, Xingcai,Gao, Min,Li, Yanxia,et al. Effects of freeze-thaw cycles on the physicochemical characteristics of animal manure and its phosphorus forms[J]. WASTE MANAGEMENT,2019,88:160-169.
APA	Chen, Xingcai,Gao, Min,Li, Yanxia,Zhang, Xuelian,Zhang, Fengsong,&Hu, Baiyang.(2019).Effects of freeze-thaw cycles on the physicochemical characteristics of animal manure and its phosphorus forms.WASTE MANAGEMENT,88,160-169.
MLA	Chen, Xingcai,et al."Effects of freeze-thaw cycles on the physicochemical characteristics of animal manure and its phosphorus forms".WASTE MANAGEMENT 88(2019):160-169.