Elevation-Related Variation in Leaf Stomatal Traits as a Function of Plant Functional Type: Evidence from Changbai Mountain, China
| Autor: | Fucai Xia, Guirui Yu, Jianping Ge, Ning Zhao, Zhiwei Xu, Ruili Wang, Nianpeng He, Qiufeng Wang |
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| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: |
China
Forest Ecology Climate Change lcsh:Medicine Biology Altitude Quantitative Trait Heritable Plant-Environment Interactions Botany Ecosystem Precipitation lcsh:Science Stomatal density Multidisciplinary Ecology Plant Ecology lcsh:R Elevation Temperature Biology and Life Sciences Plant functional type Plants Adaptation Physiological Horticulture Soil water Plant Stomata Terrestrial ecosystem lcsh:Q Research Article |
| Zdroj: | PLoS ONE PLoS ONE, Vol 9, Iss 12, p e115395 (2014) |
| ISSN: | 1932-6203 |
| Popis: | Understanding the variation in stomatal characteristics in relation to climatic gradients can reveal the adaptation strategies of plants, and help us to predict their responses to future climate changes. In this study, we investigated stomatal density (SD) and stomatal length (SL) in 150 plant species along an elevation gradient (540-2357 m) in Changbai Mountain, China, and explored the patterns and drivers of stomatal characteristics across species and plant functional types (PFTs: trees, shrubs, and herbs). The average values of SD and SL for all species combined were 156 mm(-2) and 35 µm, respectively. SD was higher in trees (224 mm(-2)) than in shrubs (156 mm(-2)) or herbs (124 mm(-2)), and SL was largest in herbs (37 µm). SD was negatively correlated with SL in all species and PFTs (P < 0.01). The relationship between stomatal characteristics and elevation differed among PFTs. In trees, SD decreased and SL increased with elevation; in shrubs and herbs, SD initially increased and then decreased. Elevation-related differences in SL were not significant. PFT explained 7.20-17.6% of the total variation in SD and SL; the contributions of CO2 partial pressure (P CO2), precipitation, and soil water content (SWC) were weak (0.02-2.28%). Our findings suggest that elevation-related patterns of stomatal characteristics in leaves are primarily a function of PFT, and highlight the importance of differences among PFTs in modeling gas exchange in terrestrial ecosystems under global climate change. |
| Databáze: | OpenAIRE |
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