Effects of freeze-thaw on aggregate stability and the organic carbon and nitrogen enrichment ratios in aggregate fractions

doi:10.1111/sum.12153

	Effects of freeze-thaw on aggregate stability and the organic carbon and nitrogen enrichment ratios in aggregate fractions
	Chai, Y. J.1,2; Zeng, X. B.1; E, S. Z.3; Bai, L. Y.1; Su, S. M.1; Huang, T.3
刊名	SOIL USE AND MANAGEMENT
	2014
卷号	30 期号:4 页码:507-516
关键词	Aggregate enrichment freeze-thaw long-term fertilizer application nitrogen organic carbon
ISSN号	0266-0032
DOI	10.1111/sum.12153
通讯作者	Chai, Y. J.
英文摘要	Soil samples from the Hexi Corridor located in the arid regions of Northwestern China were collected from a site that had received fertilizer applications for 23years. Effects of freeze-thaw on aggregate stability and the organic carbon (OC) and nitrogen (N) enrichment ratios in water stable aggregate (WSA) fractions were investigated. In treatments combining the application of N fertilizer with green manure (GN) or straw (SN), the percentage of >0.25mm WSA fraction was not significantly different from the control soil that received no fertilizer or organic amendment. After a freeze-thaw cycle, the percentages of the >0.25mm WSA fraction in the GN and SN treatments showed no change, but the size of this fraction in the other treatments decreased. In addition, the organic carbon (OC) and N enrichment ratios in the >0.25mm WSA fraction in GN and SN treatments increased after a freeze-thaw cycle. However, in this size fraction, the OC and N enrichment ratios decreased in other treatments. Both the changes of the percentages of the >0.25mm WSA fraction and the OC and N enrichment ratios in this fraction under freeze-thaw in the GN and SN treatments exhibited the most significant increases compared with other treatments (P<0.05). The results indicated that the GN and SN treatments could prevent the damaging effects of freeze-thaw on aggregate stability and protect soil from erosion.
学科主题	Soil Science
语种	英语
出版者	WILEY-BLACKWELL
WOS记录号	WOS:000346706100008
内容类型	期刊论文
源URL	[http://111.203.20.206/handle/2HMLN22E/19788]
专题	农业环境与可持续发展研究所
作者单位	1.Chinese Acad Agr Sci, Inst Environm & Sustainable Dev Agr, Key Lab Agroenvironm, Minist Agr China, Beijing 100081, Peoples R China 2.Zhejiang Inst Geol Survey, Hangzhou 311203, Zhejiang, Peoples R China 3.Gansu Acad Agr Sci, Inst Soil Fertilizer & Water Saving Agr, Lanzhou 730070, Peoples R China
推荐引用方式 GB/T 7714	Chai, Y. J.,Zeng, X. B.,E, S. Z.,et al. Effects of freeze-thaw on aggregate stability and the organic carbon and nitrogen enrichment ratios in aggregate fractions[J]. SOIL USE AND MANAGEMENT,2014,30(4):507-516.
APA	Chai, Y. J.,Zeng, X. B.,E, S. Z.,Bai, L. Y.,Su, S. M.,&Huang, T..(2014).Effects of freeze-thaw on aggregate stability and the organic carbon and nitrogen enrichment ratios in aggregate fractions.SOIL USE AND MANAGEMENT,30(4),507-516.
MLA	Chai, Y. J.,et al."Effects of freeze-thaw on aggregate stability and the organic carbon and nitrogen enrichment ratios in aggregate fractions".SOIL USE AND MANAGEMENT 30.4(2014):507-516.