干旱区生态环境知识资源中心(Arid): Comparison of C:N:P Stoichiometry in the Plant-Litter-Soil System Between Poplar and Elm Plantations in the Horqin Sandy Land, China

Arid

DOI	10.3389/fpls.2021.655517
	Comparison of C:N:P Stoichiometry in the Plant-Litter-Soil System Between Poplar and Elm Plantations in the Horqin Sandy Land, China
	Wang, Kai; Zhang, Risheng; Song, Lining; Yan, Tao; Na, Enhang
通讯作者	Wang, K (corresponding author), Liaoning Tech Univ, Coll Environm Sci & Engn, Fuxing, Peoples R China.
来源期刊	FRONTIERS IN PLANT SCIENCE
ISSN	1664-462X
出版年	2021
卷号	12
英文摘要	Afforestation is among the most effective means of preventing and controlling desertification. Silver poplar (Populus alba) is commonly planted tree species for afforestation of the Horqin Sandy Land of China. However, this species has exhibited some drawbacks such as top shoot dieback, premature senescence and mortality, and soil and ecosystems degradation. In contrast, Siberian elm (Ulmus pumila) rarely experiences these problems in the same regions. Ecological stoichiometry plays a vital role in exploring ecological processes and nutrient cycle relationships in plant-litter-soil systems. To explore the differences in the carbon (C), nitrogen (N), and phosphorus (P) balance, the stoichiometry characteristics and stoichiometric homeostasis in elm and poplar plantations in the Horqin Sandy Land, we measured C, N, and P concentrations in leaves, branches, roots, litter, and soils and analyzed N and P resorption efficiencies in the two plantations. The results showed that soil C and N concentrations, C:P, and N:P were greater in the elm plantation than in the poplar plantation. The leaf and root C:P and N:P during summer and litter N and P concentrations were greater, whereas N and P resorption efficiencies were lower, in the elm plantation than in the poplar plantation. Generally, elm exhibited greater N:P homeostasis than poplar. N and N:P homeostasis were greater in roots than in leaves and branches in the elm plantation, but they varied with soil N concentration and N:P in the poplar plantation. These findings indicate that poplar exhibited more developed internal nutrient conservation and allocation strategies but poor nutrient accumulation in soil, which may contribute to degradation of poplar plantation. In contrast, elm tended to return more nutrients to the soil, showing an improved nutrient cycle in the plant-litter-soil system and increased soil C and N accumulation in the elm plantation. Therefore, compared with poplar, elm may be a more suitable afforestation tree species for the Horqin Sandy Land, in terms of promoting the accumulation of soil nutrients and enhancing nutrient cycling in the plant-litter-soil system.
英文关键词	desertified region forest decline plant– litter– soil system stoichiometric homeostasis tree species selection for afforestation
类型	Article
语种	英语
开放获取类型	gold, Green Published, Green Submitted
收录类别	SCI-E
WOS记录号	WOS:000648610800001
WOS关键词	CARBON SEQUESTRATION ; ECOLOGICAL STOICHIOMETRY ; RESORPTION EFFICIENCY ; PHOSPHORUS FRACTIONS ; GRAZING EXCLUSION ; COVER CHANGE ; GRASSLAND ; NITROGEN ; DESERTIFICATION ; HOMEOSTASIS
WOS类目	Plant Sciences
WOS研究方向	Plant Sciences
来源机构	兰州大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/350332
作者单位	[Wang, Kai; Na, Enhang] Liaoning Tech Univ, Coll Environm Sci & Engn, Fuxing, Peoples R China; [Zhang, Risheng] Liaoning Inst Sandy Land Control & Utilizat, Fuxing, Peoples R China; [Song, Lining] Chinese Acad Sci, Inst Appl Ecol, Shenyang, Peoples R China; [Yan, Tao] Lanzhou Univ, Coll Pastoral Agr Sci & Technol, Lanzhou, Peoples R China
推荐引用方式 GB/T 7714	Wang, Kai,Zhang, Risheng,Song, Lining,et al. Comparison of C:N:P Stoichiometry in the Plant-Litter-Soil System Between Poplar and Elm Plantations in the Horqin Sandy Land, China[J]. 兰州大学,2021,12.
APA	Wang, Kai,Zhang, Risheng,Song, Lining,Yan, Tao,&Na, Enhang.(2021).Comparison of C:N:P Stoichiometry in the Plant-Litter-Soil System Between Poplar and Elm Plantations in the Horqin Sandy Land, China.FRONTIERS IN PLANT SCIENCE,12.
MLA	Wang, Kai,et al."Comparison of C:N:P Stoichiometry in the Plant-Litter-Soil System Between Poplar and Elm Plantations in the Horqin Sandy Land, China".FRONTIERS IN PLANT SCIENCE 12(2021).