Shifts in soil nutrient concentrations and C:N:P stoichiometry during long-term natural vegetation restoration

doi:10.7717/peerj.8382

	Shifts in soil nutrient concentrations and C:N:P stoichiometry during long-term natural vegetation restoration
	Ma, Rentian 2; Hu, Feinan 1,2; Liu, Jingfang 2; Wang, Chunli 2; Wang, Zilong 2; Liu, Gang 1,2; Zhao, Shiwei 1,2
刊名	PEERJ
	2020-01-22
卷号	8 页码:20
关键词	Vegetation restoration Soil organic carbon Nitrogen Phosphorus Secondary forest
ISSN号	2167-8359
DOI	10.7717/peerj.8382
通讯作者	Hu, Feinan(hufn@nwafu.edu.cn) ; Zhao, Shiwei(swzhao@nwafu.edu.cn)
英文摘要	Background. Ecological stoichiometry (C:N:P ratios) in soil is an important indicator of the elemental balance in ecological interactions and processes. Long-term natural vegetation plays an important role in the accumulation and distribution of soil stoichiometry. However, information about the effects of long-term secondary forest succession on soil stoichiometry along a deep soil profile is still limited. Methods. We selected Ziwuling secondary succession forest developed from farmland as the study area, investigated the concentrations and stoichiometry of soil organic carbon (SOC), total nitrogen (TN), and total phosphorus (TP) at a depth of 0-100 cm along a 90-year succession chronosequence, including farmland (control), grassland, shrub, early forest, and climax forest. Results. SOC and TN concentrations significantly increased with increasing restoration age, whereas soil P concentration remained relatively stable across various successional stages. SOC and TN concentrations decreased with an increase in soil depth, exhibiting distinct soil nutrient "surface-aggregation" (high nutrients concentration in the top soil layer). The soil C:P and N:P ratios increased with an increase in restoration age, whereas the variation of the C:N ratio was small and relatively stable across vegetation succession. The nutrient limitation changed along with vegetation succession, transitioning from limited N in the earlier successional stages to limited P in the later successional stages. Conclusion. Our results suggest that more nitrogen input should be applied to earlier succession stages, and more phosphorus input should be utilized in later succession stages in order to address limited availability of these elements. In general, natural vegetation restoration was an ecologically beneficial practice for the recovery of degraded soils in this area. The findings of this study strengthen our understanding of the changes of soil nutrient concentration and nutrient limitation after vegetation restoration, and provide a simple guideline for future vegetation restoration and reconstruction efforts on the Loess Plateau.
资助项目	National Key R&D Program of China[2016YFE0202900] ; Fundamental Research Funds for the Central Universities[2452019078] ; National Natural Science Foundation of China[41601236] ; National Natural Science Foundation of China[41761144060]
WOS关键词	N-P STOICHIOMETRY ; LAND-USE CHANGE ; LOESS PLATEAU ; FOREST SUCCESSION ; CARBON STORAGE ; PLANT ; NITROGEN ; PHOSPHORUS ; AFFORESTATION ; LIMITATION
WOS研究方向	Science & Technology - Other Topics
语种	英语
出版者	PEERJ INC
WOS记录号	WOS:000509465300007
资助机构	National Key R&D Program of China ; Fundamental Research Funds for the Central Universities ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/131530]
专题	中国科学院地理科学与资源研究所
通讯作者	Hu, Feinan; Zhao, Shiwei
作者单位	1.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling, Shaanxi, Peoples R China 2.Northwest A&F Univ, Coll Nat Resources & Environm, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Ma, Rentian,Hu, Feinan,Liu, Jingfang,et al. Shifts in soil nutrient concentrations and C:N:P stoichiometry during long-term natural vegetation restoration[J]. PEERJ,2020,8:20.
APA	Ma, Rentian.,Hu, Feinan.,Liu, Jingfang.,Wang, Chunli.,Wang, Zilong.,...&Zhao, Shiwei.(2020).Shifts in soil nutrient concentrations and C:N:P stoichiometry during long-term natural vegetation restoration.PEERJ,8,20.
MLA	Ma, Rentian,et al."Shifts in soil nutrient concentrations and C:N:P stoichiometry during long-term natural vegetation restoration".PEERJ 8(2020):20.