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Variations and factors characterizing ecological niches of species in a stable grassland plant community
Hongwei Xu1,3; Xiukang Wang2; Qing Qu1,3
2021
Source PublicationEcological Indicators
Volume128Issue:1Pages:1-9
Abstract

To explore the primary factors affecting the ecological niches in a plant community, four dominant shrub species
(Sophora viciifolia, Periploca sepium, Buddleja alternifolia, Clematis fruticosa) and six dominant grass species
(Bothriochloa ischaemum, Artemisia sacrorum, Stipa bungeana, Cleistogenes squarrosa, Stipa grandis, Lespedeza
bicolor) were selected from a stable grassland community in the Loess Plateau (China). The relative importance
value and niche breadth were used as comprehensive quantitative indices to characterize the status, role, and
degree of dominance of plant species in the community. We found that relative importance value and niche
breadth were higher overall in shrub species than in most grass species, except B. ischaemum. Meanwhile, the
relative importance value was significantly correlated with plant phosphorus concentration, plant carbon:ni-
trogen ratio, rhizosphere soil organic carbon, rhizosphere soil total nitrogen, rhizosphere soil total phosphorus,
rhizosphere bacterial α -diversity. A stepwise regression analysis indicated that, among the plant and rhizosphere
characteristics of these species, only their rhizosphere bacterial α -diversity and plant root carbon concentration
primarily influence ecological niche patterns of these plant species in the community. In summary, our study
reveals that shrub species occupy more advantageous ecological niches than grass species in a stable community
due to the active rhizosphere interactions, providing a new opportunity to disentangle the mechanisms under-
lying the plant community assembly in grassland.

Indexed By中文核心期刊要目总览
Language英语
Document Type期刊论文
Identifiersbir.nwafu.edu.cn/handle/361005/10878
Collection水保所知识产出(1956---)
Affiliation1.State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources
2.College of Life Science, Yan’an University
3.University of Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Hongwei Xu,Xiukang Wang,Qing Qu. Variations and factors characterizing ecological niches of species in a stable grassland plant community[J]. Ecological Indicators,2021,128(1):1-9.
APA Hongwei Xu,Xiukang Wang,&Qing Qu.(2021).Variations and factors characterizing ecological niches of species in a stable grassland plant community.Ecological Indicators,128(1),1-9.
MLA Hongwei Xu,et al."Variations and factors characterizing ecological niches of species in a stable grassland plant community".Ecological Indicators 128.1(2021):1-9.
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