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DOI	10.1111/1365-2435.14526
	Rapid positive response of young trees growth to warming reverses nitrogen loss from subtropical soil
	Lyu, Maokui; Chen, Shidong; Zhang, Qiufang; Yang, Zhijie; Xie, Jinsheng; Wang, Chao; Wang, Xiaohong; Liu, Xiaofei; Xiong, Decheng; Xu, Chao; Lin, Weisheng; Chen, Guangshui; Chen, Yuehmin; Yang, Yusheng
发表日期	2024
ISSN	0269-8463
EISSN	1365-2435
起始页码	38
结束页码	5
卷号	38 期号:5
英文摘要	Global warming is widely expected to alter nitrogen (N) cycling in terrestrial ecosystems by accelerating N transformations in soils. However, it is unclear how warming will affect plant-soil N cycling in subtropical ecosystems. Here, we measured the N transformations including net ammoniation, nitrification, nitrous oxide emissions and nitrate in soil solution throughout the plant-soil continuum with 2 years of experimental soil warming (+5 degrees C) in a young subtropical Chinese fir mesocosm. Seasonal variations of soil and plant (foliage and root) N concentrations and isotopes (delta N-15), foliar water use efficiency and arbuscular mycorrhizal colonization rate were measured. Soil warming significantly increased net ammonization and nitrification of the soil, together with the transient positive response observed in inorganic N of the soil. Warming increased nitrate N fluxes in soil solution and nitrous oxide emissions in the first year but not in the second year, suggesting N losses through leaching and gaseous in the initial period of warming. Warming primarily induced enrichment of N-15 in foliage relative to the soil, which was attributed to the trade-offs of persistent increases in plant N uptake caused by enhanced tree growth and a decrease in N losses with continuous warming. Furthermore, young trees' growth and N uptake capacity can rapidly acclimate to climate warming as a result of warming-induced increases in arbuscular mycorrhizal colonization and foliar water use efficiency. Our findings highlight that warming accelerates the plant-soil N cycle and promotes young trees' growth and N uptake, which in turn reduces soil N lost from this subtropical ecosystem. Therefore, our study suggests that the competition for N between plants and microbes governs whether subtropical forests are opened or closed N cycle systems under climate warming. We predict that subtropical young forests can still maintain their high productivity because young trees can maintain their N uptake capacity and adequate soil N supply in facing future climate warming.Read the free Plain Language Summary for this article on the Journal blog.
英文关键词	C and N stable isotope; Chinese fir; gaseous N loss; plant acclimation; plant N uptake strategy
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Ecology
WOS记录号	WOS:001164017600001
来源期刊	FUNCTIONAL ECOLOGY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/305550
作者单位	Fujian Normal University; Chinese Academy of Sciences; Shenyang Institute of Applied Ecology, CAS
推荐引用方式 GB/T 7714	Lyu, Maokui,Chen, Shidong,Zhang, Qiufang,et al. Rapid positive response of young trees growth to warming reverses nitrogen loss from subtropical soil[J],2024,38(5).
APA	Lyu, Maokui.,Chen, Shidong.,Zhang, Qiufang.,Yang, Zhijie.,Xie, Jinsheng.,...&Yang, Yusheng.(2024).Rapid positive response of young trees growth to warming reverses nitrogen loss from subtropical soil.FUNCTIONAL ECOLOGY,38(5).
MLA	Lyu, Maokui,et al."Rapid positive response of young trees growth to warming reverses nitrogen loss from subtropical soil".FUNCTIONAL ECOLOGY 38.5(2024).