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. 1986 Nov;70(4):520-526.
doi: 10.1007/BF00379898.

Leaf carbon isotope and mineral composition in subtropical plants along an irradiance cline

J R Ehleringer  1 , C B Field  2 , Zhi-Fang Lin  3 , Chun-Yen Kuo  3
Affiliations

Leaf carbon isotope and mineral composition in subtropical plants along an irradiance cline

J R Ehleringer et al. Oecologia. 1986 Nov.

Abstract

Leaf carbon isotope ratios and leaf mineral composition (Ca, K, Mg, Mn, N, and P) were measured on the dominant species along an irradiance cline in a subtropical monsoon forest of southern China. This irradiance cline resulted from disturbance caused by fuel-harvesting. Leaf carbon isotope ratios increased from undisturbed to disturbed sites for all species, indicating that leaf intercellular CO2 concentrations decreased and leaf water use efficiencies increased along this cline. Nitrogen and magnesium levels were lower in leaves of species on the disturbed sites, but there were no clear patterns for calcium, potassium, phosphorus or manganese.

Keywords: 13C/12C ratios; Human impact; Nutrient-use efficiency; Photosynthesis; Water-use efficiency.

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