干旱区生态环境知识资源中心(Arid): Differential responses of soil nutrients to edaphic properties and microbial attributes following reclamation of abandoned salinized farmland

Arid

DOI	10.1016/j.agee.2023.108373
	Differential responses of soil nutrients to edaphic properties and microbial attributes following reclamation of abandoned salinized farmland
	Heng, Tong; Hermansen, Cecilie; de Jonge, Lis Wollesen; Chen, Ji; Yang, Lili; Zhao, Li; He, Xinlin
通讯作者	He, XL
来源期刊	AGRICULTURE ECOSYSTEMS & ENVIRONMENT
ISSN	0167-8809
EISSN	1873-2305
出版年	2023
卷号	347
英文摘要	Salinization is a global threat to the sustainability of farmland in arid areas. However, the mechanisms by which soil physicochemical and microbial properties affect soil nutrients in salinized farmlands are not completely understood. Here, the direct and indirect responses of edaphic properties (bulk density [BD], saturated hydraulic conductivity [SC], field capacity [FC], alkalinity[pH], microbial biomass carbon [MBC], and microbial biomass nitrogen [MBN]) and soil microbial properties (denitrifying genes [nirS], nitrogen-fixing genes [nifH], catalase [CAT] and urease [UR] activities, and species richness [Chao1]) to the total soil N content (TN), soil organic carbon (SOC), alkali hydrolyzable N (AN), potassium (K+), and calcium (Ca2+) ions at low-salinity (2-4 dS m-1), mid-salinity (4-8 dS m-1), high-salinity (8-15 dS m-1) sites, and non-salinity (Control, 0-2 dS m-1) farmland in arid areas of northwest China were examined. Soil UR activity (range: 703.5-956.6 U UR L-1 ) and nifH, AN, SOC, and MBN content were higher at the low-salinity than at the medium-and high-salinity sites. Furthermore, FC was indirectly affected by the soil nutrients due to their effects on nifH and CAT activities. The relative contri-bution of soil TN, SOC, and AN content on the direct responses of the microbial attributes (52-70%) was higher than that of the soil physicochemical properties (27-45%) in different reclamation types. The reclamation process on abandoned salinized farmland promoted the activity of microorganisms, further improving the soil's physical properties and nutrient status. This study has found that improving microbial metabolic activity in combined with reclamation measures will be crucial for future salinity management.
英文关键词	Soil salinization Soil physicochemical Microbial properties Soil nutrients Soil hydraulic
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001003350400001
WOS关键词	NITROGEN ; CROPLAND ; CARBON ; WATER ; MANAGEMENT ; LAND ; CLASSIFICATION ; MICROORGANISMS ; IRRIGATION ; COMMUNITY
WOS类目	Agriculture, Multidisciplinary ; Ecology ; Environmental Sciences
WOS研究方向	Agriculture ; Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/395113
推荐引用方式 GB/T 7714	Heng, Tong,Hermansen, Cecilie,de Jonge, Lis Wollesen,et al. Differential responses of soil nutrients to edaphic properties and microbial attributes following reclamation of abandoned salinized farmland[J],2023,347.
APA	Heng, Tong.,Hermansen, Cecilie.,de Jonge, Lis Wollesen.,Chen, Ji.,Yang, Lili.,...&He, Xinlin.(2023).Differential responses of soil nutrients to edaphic properties and microbial attributes following reclamation of abandoned salinized farmland.AGRICULTURE ECOSYSTEMS & ENVIRONMENT,347.
MLA	Heng, Tong,et al."Differential responses of soil nutrients to edaphic properties and microbial attributes following reclamation of abandoned salinized farmland".AGRICULTURE ECOSYSTEMS & ENVIRONMENT 347(2023).