气候变化领域集成服务门户(CCPortal): Temporal patterns of soil carbon emission in tropical forests under long-term nitrogen deposition

CCPortal

DOI	10.1038/s41561-022-01080-4
	Temporal patterns of soil carbon emission in tropical forests under long-term nitrogen deposition
	Zheng, Mianhai; Zhang, Tao; Luo, Yiqi; Liu, Juxiu; Lu, Xiankai; Ye, Qing; Wang, Senhao; Huang, Juan; Mao, Qinggong; Mo, Jiangming; Zhang, Wei
发表日期	2022
ISSN	1752-0894
EISSN	1752-0908
起始页码	1002
结束页码	+
卷号	15 期号:12 页码:21
英文摘要	Soil represents the largest terrestrial carbon pool, and it liberates massive amounts of carbon dioxide (CO2) to the atmosphere via respiration, which can influence global carbon cycle. In recent decades, anthropogenic activities have dramatically increased the rates of atmospheric nitrogen (N) deposition worldwide, but our current understanding of soil respiration dynamics in anthropogenic N-deposition environments remains poor. Here we monitored soil CO2 emission rates monthly following 9-13 years of N-addition treatments in three tropical forests in southern China. We found a three-phase pattern of soil CO2 emission (insignificant changes-dramatic decline-insignificant changes) in three tropical forests and across three N-addition gradients. During the course of the experiments, N addition reduced a total cumulative amount of 6.53-9.06 MgCO2 ha(-1) with the efficiency of 5.80-13.13 MgCO2 Mg N-1. The mechanisms underlying the temporal patterns of soil respiration were related to the lack of plant and microbial responses (phase 1), the reduction in fine root and microbial biomass due to soil acidification (phase 2) and the reorganization of plant and microbial community (phase 3). These findings advance our understanding of soil respiration dynamics and support prediction of long-term soil C fluxes in tropical forests in the context of N deposition.
学科领域	Geosciences, Multidisciplinary
语种	英语
WOS研究方向	Geology
WOS记录号	WOS:000895433700006
来源期刊	NATURE GEOSCIENCE
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/272582
作者单位	Chinese Academy of Sciences; South China Botanical Garden, CAS; LingNan Normal University; Northern Arizona University; Cornell University
推荐引用方式 GB/T 7714	Zheng, Mianhai,Zhang, Tao,Luo, Yiqi,et al. Temporal patterns of soil carbon emission in tropical forests under long-term nitrogen deposition[J],2022,15(12):21.
APA	Zheng, Mianhai.,Zhang, Tao.,Luo, Yiqi.,Liu, Juxiu.,Lu, Xiankai.,...&Zhang, Wei.(2022).Temporal patterns of soil carbon emission in tropical forests under long-term nitrogen deposition.NATURE GEOSCIENCE,15(12),21.
MLA	Zheng, Mianhai,et al."Temporal patterns of soil carbon emission in tropical forests under long-term nitrogen deposition".NATURE GEOSCIENCE 15.12(2022):21.