ORIGINAL RESEARCH article
Front. Plant Sci.
Sec. Functional Plant Ecology
Volume 16 - 2025 | doi: 10.3389/fpls.2025.1562491
Influences of environmental and leaf functional traits variations on photosynthetic characteristics of Cotoneaster multiflorus in Xinglong Mountain
Provisionally accepted
- 1College of Geography and Environmental Science, Northwest Normal University, Lanzhou, Gansu Province, China
- 2Lanzhou Jiaotong University, Lanzhou, Gansu, China
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Slope aspect affects the redistribution of solar radiation and precipitation, altering habitat conditions such as temperature, water availability, and soil nutrient composition. However, the impact of slope-induced environmental changes on the synergistic relationship between plant photosynthetic characteristics and leaf functional traits remains underexplored. Four plots of Cotoneaster multiflorus (C. multiflorus) were established on the southern, eastern, western, and northern slopes within the Xinglong Mountain National Nature Reserve. This study investigated variations in leaf functional traits, photosynthetic-fluorescence characteristics and environmental responses in C. multiflorus across different slope aspects by mathematical statistics. Our study revealed that southern slope demonstrated maxima in transpiration rate (Tr), coefficient of non-photochemical burst (NPQ), maximum photosynthetic efficiency of photosystem II (Fv/Fm), vein area (LVA), leaf thickness (LT), and stomatal density (SD); eastern slope exhibited peak values in net photosynthetic rate (Pn), stomatal conductance (Gs), water use efficiency (WUE), and electron transfer rate of photosystem II (ETR); whereas northern slope showed the highest intercellular CO₂ concentration (Ci), coefficient of photochemical burst (qP), actual photosynthetic efficiency of photosystem II (Y(II)), vein density (VD), and leaf area (LA). Photosynthetic-fluorescence characteristics in C. multiflorus were significantly correlated with leaf traits, vein traits, and stomatal density, with VD and SD exerting the most pronounced influences. Photosynthetic physiology on southern and western slopes was differentially modulated by temperature and moisture factors-particularly vapor pressure deficit (VPD) and photosynthetically active radiation (PAR)-while eastern slope were primarily governed by moisture and nutrient availability. Northern slope plants experienced co-regulation by temperature, soil nutrients, and moisture, with soil organic carbon (SOC) and total phosphorus (TP) exhibiting dominant effects. This research underscores slopespecific adaptive mechanisms and key drivers in C. multiflorus, informing scientific cultivation practices for shrub communities in arid ecosystems.
Keywords: Cotoneaster multiflorus, leaf traits, Photosynthetic characteristics, Chlorophyll Fluorescence, Slope aspect
Received: 28 Jan 2025; Accepted: 14 Jul 2025.
Copyright: © 2025 Ma, Han, Zhao and Liu. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence:
Ling Han, Lanzhou Jiaotong University, Lanzhou, 730070, Gansu, China
Chengzhang Zhao, College of Geography and Environmental Science, Northwest Normal University, Lanzhou, Gansu Province, China
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