干旱区生态环境知识资源中心(Arid): Subsurface organic amendment of a saline soil increases ecosystem multifunctionality and sunflower yield

Arid

DOI	10.1016/j.scitotenv.2024.170276
	Subsurface organic amendment of a saline soil increases ecosystem multifunctionality and sunflower yield
	Song, Jiashen; Zhang, Hongyuan; Chang, Fangdi; Yu, Ru; Wang, Jing; Chen, Aiping; Xu, Yang; Liu, Yu; Zhou, Jie; Li, Yuyi
通讯作者	Li, YY
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2024
卷号	917
英文摘要	Salt stress poses a growing constraint to crop productivity in arid regions globally. Previous evidence indicates that organic amendment is a pivotal management practice for enhancing crop yield and soil fertility in agroecosystems. How organic amendment depth influences the interaction between soil health, ecosystem multifunctionality (EMF), and crop yield, however, still remains unclear. Thus, a 3 -year field experiment was carried out to investigate the impacts of surface (0-15 cm) and subsurface (15-30 cm) applications of humic acid and manure on the soil quality index (SQI), enzyme activities, EMF, and crop yield on saline soils. Subsurface organic amendment improved the SQI (at the 0-45 cm layers) by 20-47 %, while the surface amendment improved the SQI at the 0-30 cm layer by 15-51 %. The higher soil quality under subsurface organic amendment was characterized by increases in soil organic carbon and available nutrients, and a decrease in electrical conductivity compared to surface organic amendment. The organic amendment increased microbial diversity and richness, stimulated enzyme activities, and ultimately improved soil EMF. The soil EMF increased by 122-214 % at the 0-30 cm layer under subsurface organic amendment and by only 178 % at the 0-15 cm layer under surface organic amendment. Pairwise comparisons further confirmed that electrical conductivity was negatively, and soil organic carbon positively, correlated with soil ecological functions within the 0-45 cm layer. The higher soil quality and microenvironment with better EMF under subsurface organic amendment increased sunflower yield by 16 % and 8 % as compared to inorganic fertilizer only and surface organic amendment, respectively. This relates to the considerable improvement in soil electrical conductivity, soil organic carbon, beta-glucosidase activity, and diversity and richness of microbial communities resulting from deep organic amendment. Overall, subsurface organic amendment is an effective way to enhance soil EMF and crop yield on saline soils.
英文关键词	Soil quality Enzyme activity Soil ecosystem multifunctionality Crop yield Humic acid and manure Salinization
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001178459700001
WOS关键词	PHYSICAL-PROPERTIES ; DEEP PLACEMENT ; USE EFFICIENCY ; ROOT-GROWTH ; TILLAGE ; QUALITY ; HEALTH ; MATTER ; WATER ; RICE
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/405458
推荐引用方式 GB/T 7714	Song, Jiashen,Zhang, Hongyuan,Chang, Fangdi,et al. Subsurface organic amendment of a saline soil increases ecosystem multifunctionality and sunflower yield[J],2024,917.
APA	Song, Jiashen.,Zhang, Hongyuan.,Chang, Fangdi.,Yu, Ru.,Wang, Jing.,...&Li, Yuyi.(2024).Subsurface organic amendment of a saline soil increases ecosystem multifunctionality and sunflower yield.SCIENCE OF THE TOTAL ENVIRONMENT,917.
MLA	Song, Jiashen,et al."Subsurface organic amendment of a saline soil increases ecosystem multifunctionality and sunflower yield".SCIENCE OF THE TOTAL ENVIRONMENT 917(2024).