气候变化领域集成服务门户(CCPortal): C:N:P stoichiometry of plant-soil-microbe in the secondary succession of zokor-made mounds on Qinghai-Tibet Plateau

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DOI	10.1016/j.envres.2023.115333
	C:N:P stoichiometry of plant-soil-microbe in the secondary succession of zokor-made mounds on Qinghai-Tibet Plateau
	Zhang, Chunping; Li, Qi; Feng, Runqiu; Zhang, Zhenhua; Yang, Yunfeng; Liu, Jie
发表日期	2023
ISSN	0013-9351
EISSN	1096-0953
卷号	222
英文摘要	The knowledge of ecological stoichiometry and stoichiometric homeostasis could contribute to exploring the balance of chemical elements in ecological recovery. However, it is largely unknown how the carbon (C), nitrogen (N), phosphorus (P), and stoichiometric characteristics in the plant-soil-microbe continuum system respond to the spontaneous secondary succession of degraded alpine grasslands. Therefore, we investigated the spontaneous secondary successional recovery of grasslands disturbed by zokor (Myospalax fontanierii) on the Qinghai-Tibetan Plateau, China, via a strategy of substituting space for time. Based on plant richness, biomass, and coverage, plant importance value was employed to assess the recovery degree of zokor-made mounds (ZMMs, large and bare patch areas constructed by zokors). Multiple statistical methods, including stoichiometric homeostatic model, network, and redundancy analysis, were conducted to decipher the stoichiometric patterns. The results indicated that plant C, C:N, and C:P increased with the recovery of ZMMs, contrary to the decrease of plant N and P. In addition, soil C, N, C:N, C:P, and N:P increased with the recovery degree, and the soil became relatively more N rich by increasing organic N under the revegetation of legumes. Meanwhile, soil microbial biomass C, N, and P increased with the recovery of ZMMs, but microbial biomass C:N:P ratios were highly constrained. Soil accessible inorganic nitrogen played an important role in driving plant and microbial nutrient and stoichiometry. Our results demonstrated that the different responses of C, N, and P contents in plant-soilmicrobe lead to shifts in C:N:P stoichiometric ratio. Nevertheless, plants and soil microbes exhibited strong stoichiometric homeostasis. Collectively, our study provides new insight into biogeochemical responses to the successional recovery of degraded alpine grassland on the Qinghai-Tibetan Plateau from a stoichiometric perspective.
关键词	Alpine grassland Vegetation recovery Nutrients Stoichiometric homeostasis Biogeochemical cycling Zokor disturbance
英文关键词	N-P STOICHIOMETRY; MYOSPALAX-FONTANIERII; EXTRACTION METHOD; NITROGEN; COMMUNITY; NUTRIENT; CARBON; DEGRADATION; FUMIGATION; PHOSPHORUS
WOS研究方向	Environmental Sciences ; Public, Environmental & Occupational Health
WOS记录号	WOS:000931592100001
来源期刊	ENVIRONMENTAL RESEARCH
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/283517
作者单位	Lanzhou University; Nankai University; Chinese Academy of Sciences; Chinese Academy of Sciences; Tsinghua University
推荐引用方式 GB/T 7714	Zhang, Chunping,Li, Qi,Feng, Runqiu,et al. C:N:P stoichiometry of plant-soil-microbe in the secondary succession of zokor-made mounds on Qinghai-Tibet Plateau[J],2023,222.
APA	Zhang, Chunping,Li, Qi,Feng, Runqiu,Zhang, Zhenhua,Yang, Yunfeng,&Liu, Jie.(2023).C:N:P stoichiometry of plant-soil-microbe in the secondary succession of zokor-made mounds on Qinghai-Tibet Plateau.ENVIRONMENTAL RESEARCH,222.
MLA	Zhang, Chunping,et al."C:N:P stoichiometry of plant-soil-microbe in the secondary succession of zokor-made mounds on Qinghai-Tibet Plateau".ENVIRONMENTAL RESEARCH 222(2023).