干旱区生态环境知识资源中心(Arid): Ecological Stoichiometric Characteristics of Plant-Soil-Microorganism of Grassland Ecosystems under Different Restoration Modes in the Karst Desertification Area

Arid

DOI	10.3390/agronomy13082016
	Ecological Stoichiometric Characteristics of Plant-Soil-Microorganism of Grassland Ecosystems under Different Restoration Modes in the Karst Desertification Area
	Song, Shuzhen; Xiong, Kangning; Chi, Yongkuan
通讯作者	Xiong, KN
来源期刊	AGRONOMY-BASEL
EISSN	2073-4395
出版年	2023
卷号	13 期号:8
英文摘要	C, N and P are the key biogenic elements of terrestrial ecosystems, and their biogeochemical processes regulate nutrient cycling and play a key role in restoring degraded ecosystems. In this paper, the grassland ecosystem under artificial restoration measures (Dactylis glomerata (DG), Lolium perenne (LP), Lolium perenne + Trifolium repens (LT)), and the natural restoration measures (NG) in a typical karst plateau desertification control area of southwest China, were taken as the research object. The C, N, and P concentrations and the ecological stoichiometry of the plant-soil-microorganism system in grasslands under different restoration measures in the karst desertification area were explored. We established the following findings: (1) Compared with NG, the C, N and P concentrations of plants and soil in DG, LP and LT were higher, and LT was the highest. (2) The microbial biomass carbon (MBC), microbial biomass nitrogen (MBN) and microbial biomass phosphorus (MBP) concentrations in LT was also the highest. (3) The C:N ratio of plant and soil indicated that the N mineralization and nutrient release rate of DG, LP and LT were stronger than that of NG, and the plant growth of NG was most seriously limited by nitrogen. The N:P ratio in plant and soil indicated that the grassland was limited by P in the four treatments. (4) The result of correlation analysis showed that the cycling process of C, N and P in the plant-soil-microorganism system was coupled, and that the elements closely affected each other. In general, the effect of artificial restoration on a degraded ecosystem was relatively better than the natural restoration for increasing plant, soil and microbial nutrient concentrations, especially in the mixed-seed ecosystem of leguminous and gramineous forage. However, in the future, grassland management, appropriate N fertilizer or N-fixing plants and P fertilizer should be considered to improve the limitation of plant N and P, so as to realize the sustainable development of grasslands and the restoration of degraded ecosystems in the karst desertification control area.
英文关键词	plant-soil-microorganism system ecological stoichiometry artificial grassland natural restoration karst desertification
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:001056095900001
WOS关键词	N-P STOICHIOMETRY ; NUTRIENT LIMITATION ; CNP STOICHIOMETRY ; LOESS PLATEAU ; LEAF NITROGEN ; TERRESTRIAL ; PHOSPHORUS ; VEGETATION ; FOREST ; RATIO
WOS类目	Agronomy ; Plant Sciences
WOS研究方向	Agriculture ; Plant Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/395223
推荐引用方式 GB/T 7714	Song, Shuzhen,Xiong, Kangning,Chi, Yongkuan. Ecological Stoichiometric Characteristics of Plant-Soil-Microorganism of Grassland Ecosystems under Different Restoration Modes in the Karst Desertification Area[J],2023,13(8).
APA	Song, Shuzhen,Xiong, Kangning,&Chi, Yongkuan.(2023).Ecological Stoichiometric Characteristics of Plant-Soil-Microorganism of Grassland Ecosystems under Different Restoration Modes in the Karst Desertification Area.AGRONOMY-BASEL,13(8).
MLA	Song, Shuzhen,et al."Ecological Stoichiometric Characteristics of Plant-Soil-Microorganism of Grassland Ecosystems under Different Restoration Modes in the Karst Desertification Area".AGRONOMY-BASEL 13.8(2023).