干旱区生态环境知识资源中心(Arid): Long-term mulched drip irrigation enhances the stability of soil aggregates by increasing organic carbon stock and reducing salinity

Arid

DOI	10.1016/j.still.2024.106069
	Long-term mulched drip irrigation enhances the stability of soil aggregates by increasing organic carbon stock and reducing salinity
	Tan, Mingdong; Li, Wenhao; Zong, Rui; Li, Xuanzhi; Han, Yue; Luo, Pengcheng; Prasad, Yam; Lin, Haixia; Li, Haiqiang; Wang, Zhenhua
通讯作者	Wang, ZH
来源期刊	SOIL & TILLAGE RESEARCH
ISSN	0167-1987
EISSN	1879-3444
出版年	2024
卷号	240
英文摘要	Soil aggregate stability is critical to ensure the provision of agricultural land. Mulched drip irrigation (MDI) is widely used in arid region of northwest China, but the response of soil aggregate stability to soil organic carbon (SOC) and salinity as affected by continuous MDI is still unclear. In this study, we examined four MDI ages (9, 13, 15, and 23 years) of cotton fields that were converted from wasteland (CK, 0 year) and evaluated the impact of MDI age on soil aggregate size distribution, aggregate stability, and aggregate-associated SOC/salinity. The results showed that the proportion of macro-aggregates (>0.25 mm) and aggregate stability (MWD, GMD) initially decreased and then increased as MDI age progressed. As MDI age increased, the concentration of aggregateassociated SOC in all fractions significantly increased, while salt concentration significantly declined. Compared to the CK (0 year), the total SOC stock in cotton fields aged 9, 13, 15 and 23 years increased by -0%, 11%, 17%, and 87%, respectively; whereas the total salt stock decreased by 33%, 68%, 67%, and 76%, respectively. Moreover, due to the significant increase in macro-aggregate content and associated SOC concentration with MDI age, the storage of SOC in older MDI ages (15-23 years) was more reliant on macroaggregates. Pearson correlation and principal component analysis indicated a negative correlation between salinity and macro-aggregates, aggregate stability, and SOC, while there was a positive correlation among MDI age, SOC, macro-aggregates, and aggregate stability. Based on our findings, we concluded that long-term MDI promotes the formation of macro-aggregates, enhances aggregate stability by reducing soil salinity and increasing SOC stock.
英文关键词	Mulched drip irrigation Soil aggregate stability Organic carbon Soil salinity
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001203711600001
WOS关键词	SALT-AFFECTED SOILS ; LAND-USE ; NO-TILLAGE ; PHYSICAL-PROPERTIES ; MICROBIAL BIOMASS ; CROP PERFORMANCE ; NITROGEN POOLS ; MATTER ; WATER ; DYNAMICS
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/2XILL650/405651
推荐引用方式 GB/T 7714	Tan, Mingdong,Li, Wenhao,Zong, Rui,et al. Long-term mulched drip irrigation enhances the stability of soil aggregates by increasing organic carbon stock and reducing salinity[J],2024,240.
APA	Tan, Mingdong.,Li, Wenhao.,Zong, Rui.,Li, Xuanzhi.,Han, Yue.,...&Wang, Zhenhua.(2024).Long-term mulched drip irrigation enhances the stability of soil aggregates by increasing organic carbon stock and reducing salinity.SOIL & TILLAGE RESEARCH,240.
MLA	Tan, Mingdong,et al."Long-term mulched drip irrigation enhances the stability of soil aggregates by increasing organic carbon stock and reducing salinity".SOIL & TILLAGE RESEARCH 240(2024).