气候变化领域集成服务门户(CCPortal): Non-climate environmental factors matter to Holocene dynamics of soil organic carbon and nitrogen in an alpine permafrost wetland, Qinghai-Tibet Plateau

CCPortal

DOI	10.1016/j.accre.2023.04.001
	Non-climate environmental factors matter to Holocene dynamics of soil organic carbon and nitrogen in an alpine permafrost wetland, Qinghai-Tibet Plateau
	Wang, Qing-Feng; Jin, Hui-Jun; Mu, Cui-Cui; Wu, Xiao-Dong; Zhao, Lin; Wu, Qing-Bai
发表日期	2023
ISSN	1674-9278
起始页码	213
结束页码	225
卷号	14 期号:2
英文摘要	Studies on the responses of soil organic carbon (SOC) and nitrogen dynamics to Holocene climate and environment in permafrost peatlands and/or wetlands might serve as analogues for future scenarios, and they can help predict the fate of the frozen SOC and nitrogen under a warming climate. To date, little is known about these issues on the Qinghai -Tibet Plateau (QTP). Here, we investigated the accumulations of SOC and nitrogen in a permafrost wetland on the northeastern QTP, and analyzed their links with Holocene climatic and environmental changes. In order to do so, we studied grain size, soil organic matter, SOC, and nitrogen contents, bulk density, geochemical parameters, and the accelerator mass spectrometry (AMS) 14C dating of the 216-cm-deep wetland profile. SOC and nitrogen contents revealed a general uptrend over last 7300 years. SOC stocks for depths of 0-100 and 0-200 cm were 50.1 and 79.0 kgC m-2, respectively, and nitrogen stocks for the same depths were 4.3 and 6.6 kgN m-2, respectively. Overall, a cooling and drying trend for regional climate over last 7300 years was inferred from the declining chemical weathering and humidity index. Meanwhile, SOC and nitrogen accumulated rapidly in 1110-720 BP, while apparent accumulation rates of SOC and nitrogen were much lower during the other periods of the last 7300 years. Consequently, we proposed a probable conceptual framework for the concordant development of syngenetic permafrost and SOC and nitrogen accumulations in alpine permafrost wetlands. This indicates that, apart from controls of climate, non-climate environmental factors, such as dust deposition and site hydrology, matter to SOC and nitrogen accumulations in permafrost wetlands. We emphasized that environmental changes driven by climate change have important impacts on SOC and nitrogen accumulations in alpine permafrost wetlands. This study could provide data support for regional and global estimates of SOC and nitrogen pools and for global models on carbon -climate interactions that take into account of alpine permafrost wetlands on the northeastern QTP at mid-latitudes.
关键词	Syngenetic permafrost in alpine wetland Soil organic carbon pool Nitrogen accumulation Chemical weathering Dust deposition Holocene
英文关键词	BAYAN HAR MOUNTAINS; PEATLAND INITIATION; HINGGAN MOUNTAINS; NORTHEAST CHINA; GONGHE BASIN; YELLOW-RIVER; LAKE; STOCKS; SEDIMENTS; RECORD
WOS研究方向	Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:001011679500001
来源期刊	ADVANCES IN CLIMATE CHANGE RESEARCH
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/283290
作者单位	Chinese Academy of Sciences; Northeast Forestry University - China; Lanzhou University; Chinese Academy of Sciences; Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS; Nanjing University of Information Science & Technology
推荐引用方式 GB/T 7714	Wang, Qing-Feng,Jin, Hui-Jun,Mu, Cui-Cui,et al. Non-climate environmental factors matter to Holocene dynamics of soil organic carbon and nitrogen in an alpine permafrost wetland, Qinghai-Tibet Plateau[J],2023,14(2).
APA	Wang, Qing-Feng,Jin, Hui-Jun,Mu, Cui-Cui,Wu, Xiao-Dong,Zhao, Lin,&Wu, Qing-Bai.(2023).Non-climate environmental factors matter to Holocene dynamics of soil organic carbon and nitrogen in an alpine permafrost wetland, Qinghai-Tibet Plateau.ADVANCES IN CLIMATE CHANGE RESEARCH,14(2).
MLA	Wang, Qing-Feng,et al."Non-climate environmental factors matter to Holocene dynamics of soil organic carbon and nitrogen in an alpine permafrost wetland, Qinghai-Tibet Plateau".ADVANCES IN CLIMATE CHANGE RESEARCH 14.2(2023).