干旱区生态环境知识资源中心(Arid): Duration of continuous cropping with straw return affects soil organic carbon

Arid

DOI	10.1111/sum.12912
	Duration of continuous cropping with straw return affects soil organic carbon
	Zhang, Jun; Zhang, Fenghua; Chang, Handa
通讯作者	Zhang, FH
来源期刊	SOIL USE AND MANAGEMENT
ISSN	0266-0032
EISSN	1475-2743
出版年	2023
卷号	39 期号:3 页码:1096-1108
英文摘要	Understanding the impact of continuous cropping with straw return on soil organic matter functional groups is of great importance for maintaining chemical stabilization of SOC in arid regions. Infrared spectral characteristics of cotton field soil with different continuous cropping durations (0, 5, 10, 15 and 20 years) were determined with Fourier-transform infrared spectroscopy for fields in Manasi River Basin, Xinjiang province, China. The effects of continuous cropping duration on the stability and chemical composition of soil organic carbon (SOC) were analysed. The results indicate an initial increase in the SOC, soil particulate organic carbon (POC), and mineral-associated organic carbon (MOC) content of soil under continuous cropping with straw return. However, as continuous cropping duration increased, the levels of SOC, POC, and MOC in soil began to decrease. The soil POC content and POC/MOC were highest after 5 years of straw return, and started to decrease as the continuous cropping duration increased. The SOC and MOC contents were highest after 10 years of continuous cropping, and were 3.30 and 1.84 times higher than the control, respectively. As continuous cropping duration increased, the relative peak intensities for polysaccharides and aromatic groups in soil organic matter decreased, while the relative peak intensities for aliphatic compounds and hydroxyketone increased. In conclusion, continuous cropping with straw return in cotton fields promotes SOC but only for about 10 years. An increase in straw return duration boosts the degree of esterification in soil organic matter. Moreover, enhanced protection by mineral binding was observed for soil organic matter, increasing organic matter stabilization. This study aimed to provide an empirical foundation for the management of the SOC pool and the establishment of rational straw return practices for cotton fields in arid areas.
英文关键词	arid area chemical composition of organic matter cotton fields organic carbon straw return
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001006985000001
WOS关键词	MATTER ; STABILIZATION ; DECOMPOSITION ; FRACTIONS ; SEQUESTRATION ; HETEROGENEITY ; MECHANISMS ; STABILITY ; NITROGEN
WOS类目	Soil Science
WOS研究方向	Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/398678
推荐引用方式 GB/T 7714	Zhang, Jun,Zhang, Fenghua,Chang, Handa. Duration of continuous cropping with straw return affects soil organic carbon[J],2023,39(3):1096-1108.
APA	Zhang, Jun,Zhang, Fenghua,&Chang, Handa.(2023).Duration of continuous cropping with straw return affects soil organic carbon.SOIL USE AND MANAGEMENT,39(3),1096-1108.
MLA	Zhang, Jun,et al."Duration of continuous cropping with straw return affects soil organic carbon".SOIL USE AND MANAGEMENT 39.3(2023):1096-1108.