气候变化领域集成服务门户(CCPortal): Effects of Long-Term Warming on Microbial Nutrients Limitation of Soil Aggregates on the Qinghai-Tibet Plateau

CCPortal

DOI	10.1007/s42729-023-01388-z
	Effects of Long-Term Warming on Microbial Nutrients Limitation of Soil Aggregates on the Qinghai-Tibet Plateau
	Chen, Wenjing; Zhou, Huakun; Qiao, Leilei; Li, Yuanze; Wu, Yang; Zhai, Jiaying; Liu, Guobin; Xue, Sha
发表日期	2023
ISSN	0718-9508
EISSN	0718-9516
英文摘要	Global warming has increasingly detrimental impacts on the structure and function of the Tibetan Plateau ecosystem. However, the mechanism by which warming affects the biogeochemical processes, and consequently the microbial nutrient limitation in soil aggregates, is not clear. In this study, we implemented a 21-year long-term open-top-chamber (OTCs) warming experiment to reveal the warming effects on the soil aggregate microbial nutrient limitation mechanisms in a Tibetan alpine meadow and shrubland. Long-term warming significantly decreased soil aggregate-associated organic carbon (SOC) and total nitrogen (TN) concentrations in alpine meadows, but promoted soil carbon pool in alpine shrublands. SOC and TN concentrations in microaggregate (MIGA: < 0.25 mm) showed the greatest in alpine meadows. Soil enzyme activities increased with the decrease in aggregate size, and enzyme stoichiometry results demonstrated that soil microbes in alpine meadows and shrubland were limited by phosphorus (P); moreover, the long-term warming significantly aggravated the soil aggregate microbial P limitation in the shrubland. Meanwhile, the long-term warming had no significant effect on microbial C limitation in the alpine meadow and shrubland, but soil aggregate size mediated the microbial C limitation patterns and showed the greatest C limitation in MIGA. Phosphorus limitation is likely to be an important constraint to the development of alpine ecosystems in future climate warming, and the protection of MIGA is one of the important mechanisms for carbon pool sequestration.
关键词	Qinghai-Tibet Plateau Soil aggregate Enzyme stoichiometry Nutrient limitation Warming experiment
英文关键词	ORGANIC-CARBON FRACTIONS; ALPINE MEADOW; NITROGEN MINERALIZATION; ENZYME-ACTIVITIES; BIOMASS; MICROORGANISMS; METAANALYSIS; TEMPERATURE; STABILITY; RESPONSES
WOS研究方向	Plant Sciences ; Environmental Sciences ; Soil Science
WOS记录号	WOS:001032529800002
来源期刊	JOURNAL OF SOIL SCIENCE AND PLANT NUTRITION
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/282939
作者单位	Moutai Institute; Northwest A&F University - China; Chinese Academy of Sciences; Institute of Soil & Water Conservation (ISWC), CAS; Chinese Academy of Sciences; Qinghai University; Chinese Academy of Sciences; Institute of Soil & Water Conservation (ISWC), CAS; Ministry of Water Resources; Northwest A&F University - China; Chinese Academy of Sciences; Institute of Soil & Water Conservation (ISWC), CAS
推荐引用方式 GB/T 7714	Chen, Wenjing,Zhou, Huakun,Qiao, Leilei,et al. Effects of Long-Term Warming on Microbial Nutrients Limitation of Soil Aggregates on the Qinghai-Tibet Plateau[J],2023.
APA	Chen, Wenjing.,Zhou, Huakun.,Qiao, Leilei.,Li, Yuanze.,Wu, Yang.,...&Xue, Sha.(2023).Effects of Long-Term Warming on Microbial Nutrients Limitation of Soil Aggregates on the Qinghai-Tibet Plateau.JOURNAL OF SOIL SCIENCE AND PLANT NUTRITION.
MLA	Chen, Wenjing,et al."Effects of Long-Term Warming on Microbial Nutrients Limitation of Soil Aggregates on the Qinghai-Tibet Plateau".JOURNAL OF SOIL SCIENCE AND PLANT NUTRITION (2023).