Availability of soil base cations and micronutrients along soil profile after 13-year nitrogen and water addition in a semi-arid grassland

doi:10.1007/s10533-020-00749-5

	Availability of soil base cations and micronutrients along soil profile after 13-year nitrogen and water addition in a semi-arid grassland
	Niu, Guoxiang 1; Wang, Ruzhen 2; Hasi, Muqier 1; Wang, Yinliu 1; Geng, Qianqian 1; Wang, Changhui 1; Jiang, Yong 2; Huang, Jianhui1
	2021
发表期刊	BIOGEOCHEMISTRY
ISSN	0168-2563
卷号	152 期号:2-3 页码:223-236
摘要	Alteration in the availability of soil base cations and micronutrients is critical to maintain stable ecosystem functioning under the predicted global change scenarios. However, changes in these soil cations and their relationships with soil physiochemical properties along soil profile remain unclear under the combined increasing N deposition and precipitation changes. In this study, the concentrations of soil exchangeable base cations (Ca, Mg, K and Na) and available micronutrients (Fe, Mn, Cu and Zn) were determined along an 80-cm soil profile after 13-year continuous N and water manipulation in a semi-arid grassland. Our results showed that N addition significantly decreased exchangeable Ca (- 25.4%, averaging across the three N addition rates) and Mg (- 7.8%) at the depth of 10 cm while increased available Fe (+ 70.5%), Mn (+ 64.7%), and Cu (+ 26.0%). Besides, the magnitude of the increase or decrease escalated with the rates of additional N. Such pattern was also true for the concentrations of available Fe, Mn and Cu in the 10-20 cm soil layer, but the magnitude of changes was much smaller than in the top 10-cm soil layer. Nevertheless, N addition increased the concentrations of the three available micronutrients across the entire profile, indicating that Fe, Mn and Cu were more sensitive to N addition in subsoils than surface soils. Nitrogen addition significantly reduced soil cation exchange capacity (CEC) in the top 10-cm and soil base saturation (BS) ratio in the top 20-cm soil, while water addition significantly increased soil CEC and BS ratio in the top 20-cm soil. Water addition significantly increased Na (+ 75.1%) in the entire soil profile and increased Ca (+ 14.8%), Mg (+ 12.7%) at the 0-10, 10-20 and 40-60 cm soil layers. Soil pH positively correlated with soil exchangeable Ca, Mg and Na, but negatively with available Fe, Mn and Cu in the upper 20 cm. Soil base cations and CEC positively correlated with clay and silt contents, but negatively with sand content along the profile. These results can extend our understandings on soil cation dynamics to deep soil profile under long-term N and water addition and suggest that precipitation effects should be considered when assessing N deposition effects on these soil cations.
关键词	Cation exchange capacity Nitrogen deposition Precipitation increase Soil exchangeable cations Soil micronutrients Subsoil Topsoil
学科领域	Environmental Sciences ; Geosciences, Multidisciplinary
DOI	10.1007/s10533-020-00749-5
收录类别	SCI
语种	英语
WOS关键词	ALTERED PRECIPITATION REGIMES ; MICROBIAL COMMUNITIES ; ENHANCED NITROGEN ; ORGANIC-MATTER ; CARBON ; DEPOSITION ; DEPTH ; PRODUCTIVITY ; METAANALYSIS ; DIVERSITY
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000604802600001
出版者	SPRINGER
文献子类	Article
出版地	DORDRECHT
EISSN	1573-515X
资助机构	Innovative Research Group Project of the National Natural Science Foundation of China [31870440]
作者邮箱	jhhuang@ibcas.ac.cn
引用统计	被引频次：14[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/26397
专题	植被与环境变化国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Bot, Beijing 100089, Peoples R China 2.Univ Chinese Acad Sci, Yuquan Rd, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Inst Appl Ecol, Erguna Forest Steppe Ecotone Ecosyst Res Stn, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Niu, Guoxiang,Wang, Ruzhen,Hasi, Muqier,et al. Availability of soil base cations and micronutrients along soil profile after 13-year nitrogen and water addition in a semi-arid grassland[J]. BIOGEOCHEMISTRY,2021,152(2-3):223-236.
APA	Niu, Guoxiang.,Wang, Ruzhen.,Hasi, Muqier.,Wang, Yinliu.,Geng, Qianqian.,...&Huang, Jianhui.(2021).Availability of soil base cations and micronutrients along soil profile after 13-year nitrogen and water addition in a semi-arid grassland.BIOGEOCHEMISTRY,152(2-3),223-236.
MLA	Niu, Guoxiang,et al."Availability of soil base cations and micronutrients along soil profile after 13-year nitrogen and water addition in a semi-arid grassland".BIOGEOCHEMISTRY 152.2-3(2021):223-236.

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