Does local soil factor drive functional leaf trait variation? A test on Neilingding Island, South China

Area of Science:

• Ecology
• Plant Biology
• Environmental Science

Background:

• Soil factors influence leaf traits in forest ecosystems, but data from island ecosystems is limited.
• Understanding these relationships is crucial for island biodiversity and conservation.

Purpose of the Study:

• To investigate the variation in nine leaf traits across 54 subtropical woody species on Neilingding Island.
• To explore the correlations between these leaf traits and various soil parameters.
• To identify key soil factors driving leaf trait variation in an island ecosystem.

Main Methods:

• Comprehensive measurement of nine leaf traits (e.g., leaf area, C:N ratio) for 54 subtropical woody species.
• Analysis of soil parameters including pH, C, N, K content, available nutrients, and moisture.
• Statistical analysis of intra- and interspecific trait variations and their correlation with soil factors.

Main Results:

• Interspecific variation was higher for leaf C:N ratio, leaf N content, and leaf fresh weight.
• Intraspecific variation dominated leaf K content, explaining 80.69% of the total variance.
• Soil factors, particularly the interaction of soil moisture and available P, significantly affected leaf morphology and stoichiometry.

Conclusions:

• Leaf traits of island plants are closely linked to soil parameters.
• Soil moisture and available phosphorus are critical drivers of leaf morphology and stoichiometry at the local scale on Neilingding Island.
• Findings provide insights into plant adaptation strategies in island environments.