干旱区生态环境知识资源中心(Arid): Response of soil microbial Communities, inorganic and organic soil carbon pools in arid saline soils to alternative land use practices

Arid

DOI	10.1016/j.ecolind.2023.110227
	Response of soil microbial Communities, inorganic and organic soil carbon pools in arid saline soils to alternative land use practices
	Somenahally, Anil C.; McLawrence, Javid; Chaganti, Vijayasatya N.; Ganjegunte, Girisha K.; Obayomi, Olabiyi; Brady, Jeff A.
通讯作者	Somenahally, AC
来源期刊	ECOLOGICAL INDICATORS
ISSN	1470-160X
EISSN	1872-7034
出版年	2023
卷号	150
英文摘要	Soil organic and inorganic carbon (SOC & SIC) and microbial community structure are key indicators of soil quality and productivity in arid-saline soils. Salinity stress and diminishing availability of freshwater (FW) for irrigation are major constraints for productivity and improving soil quality indicators. Using treated wastewater (TW) and implementing climate-smart cropping systems are promising alternatives to replace freshwater usage in intensive cropping systems, however, impacts on the microbial community and net-carbon sequestration potential are not clearly understood. This field study was conducted in an arid saline-soil to investigate soil microbial community structure and soil carbon contents under a combination of treatments comparing bioenergy sorghum (So) and switchgrass (Sg), two irrigation water sources (FW & TW), and gypsum amendment (GA), to a native-soil control. After three years of implementing these treatments, soil samples were collected and analyzed for total carbon (TC), SOC, SIC, microbial biomass-carbon (MBC) and microbial community structure. Results showed that TW increased microbial diversity and shifted the community structure towards copiotroph-dominated prokaryotes. Several predominant and responsive taxa were associated with divergent trends of SOC, SIC and salinity parameters. Both SOC and SIC pools were sensitive to treatments and demonstrated divergent trends, as contents of TC and SOC were higher in TW-treatments, but of SIC were significantly lower in several So_TW treatments. Treatment TW_So_GA assembled a distinctive microbial community structure, accu-mulated the highest content of SOC (7.66 g kg-1) but recorded the lowest content of SIC (6.63 g kg-1). The lowest content of SOC was observed in native soil (4.58 g kg-1) but contained the highest SIC (8.15 g kg-1). The study results revealed the agronomic systems with higher potential for increasing TC and SOC content in arid-saline soils. Surface soil SIC was responsive to agronomic management, and several treatments produced disparate impacts on SOC and SIC stocks, which warrant for considering TC as the key indicator for assessing carbon sequestration in arid lands.
英文关键词	Total soil carbon Indicator for carbon sequestration Saline soil microbial structure Wastewater irrigation Gypsum amendment
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000982125900001
WOS关键词	WASTE-WATER IRRIGATION ; LOESS PLATEAU ; MYCORRHIZAL FUNGI ; STRESS ; TOLERANCE ; GROWTH ; SEQUESTRATION ; PRECIPITATION ; INOCULATION ; BACTERIA
WOS类目	Biodiversity Conservation ; Environmental Sciences
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/395931
推荐引用方式 GB/T 7714	Somenahally, Anil C.,McLawrence, Javid,Chaganti, Vijayasatya N.,et al. Response of soil microbial Communities, inorganic and organic soil carbon pools in arid saline soils to alternative land use practices[J],2023,150.
APA	Somenahally, Anil C.,McLawrence, Javid,Chaganti, Vijayasatya N.,Ganjegunte, Girisha K.,Obayomi, Olabiyi,&Brady, Jeff A..(2023).Response of soil microbial Communities, inorganic and organic soil carbon pools in arid saline soils to alternative land use practices.ECOLOGICAL INDICATORS,150.
MLA	Somenahally, Anil C.,et al."Response of soil microbial Communities, inorganic and organic soil carbon pools in arid saline soils to alternative land use practices".ECOLOGICAL INDICATORS 150(2023).