Seasonal Variations in Carbon, Nitrogen, and Phosphorus Stoichiometry of a Robinia pseudoacacia Plantation on the Loess Hilly Region, China

doi:10.3390/f12020214

	Seasonal Variations in Carbon, Nitrogen, and Phosphorus Stoichiometry of a Robinia pseudoacacia Plantation on the Loess Hilly Region, China
	Dong, Congguo 1; Qiao, Yuning 1; Cao, Yang 1,2; Chen, Yunming 1,2; Wu, Xu 2; Xue, Wenyan 1
刊名	FORESTS
	2021-02-01
卷号	12 期号:2 页码:15
关键词	ecological stoichiometry plants-litter-soil seasonal variation plantation Loess Plateau
DOI	10.3390/f12020214
通讯作者	Chen, Yunming(ymchen@ms.iswc.ac.cn)
英文摘要	Seasonal variations in stoichiometry are a crucial regulatory mechanism for plant communities that respond to environmental changes. However, the seasonal characteristics of stoichiometry in plants, litter, and soil are poorly understood, especially in plantation ecosystems. Therefore, we explored the seasonal variations of C, N, and P contents and ratios between plants, litter, and soil of a Robinia pseudoacacia plantation on the Loess Plateau in China in 2017. The results indicate that the C, N, P contents and ratios in plants, litter and soil showed different seasonal patterns. The N and P contents of tree and shrub leaves substantially decreased over the growing season, while the C:N, C:P, and N:P ratios exhibited the opposite trend. The utilization efficiency of the N and P elements by trees and shrubs gradually increased with the change of the growing season. These results suggest that the C:N:P stoichiometry of plants was more sensitive to seasonal changes than the litter and soil; therefore, the potential impacts of time should be considered when using stoichiometry to explore the utilization of plant nutrients. Additionally, the P content between tree leaves and soil and the N content between herb leaves and soil were significantly positively correlated, indicating that the growth of the tree and herb layer in the R. pseudoacacia plantation in the area was restricted by P and N, respectively. Meanwhile, the N content in the leaves between trees and herbs showed a significant negative correlation, indicating that N competition existed between R. pseudoacacia and understory herbs, which was not conducive to the effective use of environmental resources by the R. pseudoacacia plantation ecosystem. This study contributes to vegetation restoration and plantation management on the Loess Plateau and provides basic information for global stoichiometric analyses.
资助项目	National Nature Science Foundation of China[41771556] ; National Nature Science Foundation of China[41977418] ; National Key Research and Development Project of China[2016YFC0501703] ; CAS Light of West China Program[XAB2017A02] ; Natural Science Foundation of Shaanxi Province[2017sbkj-01]
WOS研究方向	Forestry
语种	英语
出版者	MDPI
WOS记录号	WOS:000622532800001
资助机构	National Nature Science Foundation of China ; National Key Research and Development Project of China ; CAS Light of West China Program ; Natural Science Foundation of Shaanxi Province
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/160611]
专题	中国科学院地理科学与资源研究所
通讯作者	Chen, Yunming
作者单位	1.Northwest A&F Univ, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China 2.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Dong, Congguo,Qiao, Yuning,Cao, Yang,et al. Seasonal Variations in Carbon, Nitrogen, and Phosphorus Stoichiometry of a Robinia pseudoacacia Plantation on the Loess Hilly Region, China[J]. FORESTS,2021,12(2):15.
APA	Dong, Congguo,Qiao, Yuning,Cao, Yang,Chen, Yunming,Wu, Xu,&Xue, Wenyan.(2021).Seasonal Variations in Carbon, Nitrogen, and Phosphorus Stoichiometry of a Robinia pseudoacacia Plantation on the Loess Hilly Region, China.FORESTS,12(2),15.
MLA	Dong, Congguo,et al."Seasonal Variations in Carbon, Nitrogen, and Phosphorus Stoichiometry of a Robinia pseudoacacia Plantation on the Loess Hilly Region, China".FORESTS 12.2(2021):15.