Species composition and structure characteristics of the major montane shrub communities in the west slope of Helan Mountains, Nei Mongol, China

SU, Chuang; MA, Wen-Hong; ZHANG, Xin-Yu; Su, Y.-G.; MIN, Yong-En; Zhang, Jinyuan; Liu, Zhao; Liang, Cunzhu

doi:10.17521/cjpe.2018.0111

Chinese Journal of Plant Ecology

2018

DOI: 10.17521/cjpe.2018.0111

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Species composition and structure characteristics of the major montane shrub communities in the west slope of Helan Mountains, Nei Mongol, China

Chuang SU¹,

Wen-Hong MA²,

Xin-Yu ZHANG³

et al.

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Plant diversity patterns along an elevation gradient: the relative impact of environmental and spatial variation on plant diversity and assembly in arid and semi-arid regions

Arif

Zheng

et al. 2023

Front. Environ. Sci.

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The spatial distribution pattern of species diversity and its driving variables are essential to understanding how biodiversity will respond to the threat of future climatic instability. This study examines how the alpha and beta diversity indices vary along the elevation gradient and which factors are more responsible for arid and semi-arid plant diversity and community assembly. There were 121 species from 90 genera and 42 families found at elevations ranging from 1,200 to 2,600 m within the Ningxia Helan Mountain National Nature Reserve in China. These were primarily shrubs and herbs with characteristics adapted to extreme temperatures. The diversity of both the shrub layer and the herb layer was highest at mid-elevation, underscoring the importance of protecting mid-elevation ecosystems. Climatic distance and topographic distance were more influential than spatial distance in driving the species composition change of shrubs and herbs. In the herb layer, climatic, topographic, and spatial factors contributed more to community assembly than shrub communities. In this case, improving the environment in the community or introducing herbs could help the restoration of these places. These findings provide insight into biogeographic patterns, biodiversity growth mechanisms, and community formation processes. Moreover, it can improve projections of climate change within and across ecosystems and provide the scientific basis for the use and management of plant resources in arid and semi-arid regions.

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Plant diversity patterns along an elevation gradient: the relative impact of environmental and spatial variation on plant diversity and assembly in arid and semi-arid regions

Arif

Zheng

et al. 2023

Front. Environ. Sci.

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Soil Microbial Community Responds to Elevation Gradient in an Arid Montane Ecosystem in Northwest China

Yang

J²,

Wang

et al. 2022

Forests

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This study sought to clarify the composition of soil fungal and bacterial communities along an elevation gradient in an arid montane ecosystem as well as the influence of environmental factors (soil properties, climate, topography, and plant diversity) upon soil microbial community structures. Four vegetation types—montane desert steppe (mean elevation: 1761 m), montane shrub (mean elevation: 2077 m), subalpine coniferous forest (mean elevation: 2485 m), and subalpine shrub (mean elevation: 2903 m)—were sampled on the western slope of the Helan Mountains. The 16SrRNA gene and ITS1 were performed by single-molecule real-time (SMRT) sequencing with the PacBio sequencing platform. The Chao1 and Shannon–Wiener diversity of soil fungi and bacteria were more diverse in the soil of the lower elevation gradient compared to that of the upper one. Differences in abundance among phyla were found via One-way ANOVA(analysis of variance), yet the dominant soil fungal phyla (Ascomycota, Basidiomycota, and Mortierellomycota) and bacterial phyla (Proteobacteria, Acidobacteria, and Bacteroidetes) were the same across the elevation gradient. Pearson correlations and redundancy analysis (RDA) indicated that plant diversity (Shannon–Wiener diversity [H] and Margalef richness [D]), solar radiation, mean annual temperature, soil organic matter, soil moisture content, slope, mean annual precipitation, and elevation all significantly influenced the community composition of different soil fungal and bacterial phyla. Although plant diversity significantly affects fungal and bacterial diversity, the results imply that the influence of plant functional diversity on soil microbial community variation should not be ignored.

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Species composition and structure characteristics of the major montane shrub communities in the west slope of Helan Mountains, Nei Mongol, China

Cited by 2 publications

References 0 publications

Plant diversity patterns along an elevation gradient: the relative impact of environmental and spatial variation on plant diversity and assembly in arid and semi-arid regions

Plant diversity patterns along an elevation gradient: the relative impact of environmental and spatial variation on plant diversity and assembly in arid and semi-arid regions

Soil Microbial Community Responds to Elevation Gradient in an Arid Montane Ecosystem in Northwest China

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