Leaf fresh weight versus dry weight : which is better for describing the scaling relationship between leaf biomass and leaf area for broad-leaved plants

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dc.contributor.authorHuang, Weiweien_ZA
dc.contributor.authorRatkowsky, David A.en_ZA
dc.contributor.authorHui, Cangen_ZA
dc.contributor.authorWang, Pingen_ZA
dc.contributor.authorSu, Jialuen_ZA
dc.contributor.authorShi, Peijianen_ZA
dc.date.accessioned2019-05-22T07:18:28Z
dc.date.accessioned2021-08-26T21:26:05Z
dc.date.available2019-05-22T07:18:28Z
dc.date.available2021-08-26T21:26:05Z
dc.date.issued2019-02-13
dc.descriptionCITATION: Huang, W. et al. 2019. Leaf fresh weight versus dry weight: which is better for describing the scaling relationship between leaf biomass and leaf area for broad-leaved plants. Forests, 10(3), 256; https://doi.org/10.3390/f10030256.
dc.description.abstractLeaf dry mass per unit area (LMA) is considered to represent the photosynthetic capacity, which actually implies a hypothesis that foliar water mass (leaf fresh weight minus leaf dry weight) is proportional to leaf dry weight during leaf growth. However, relevant studies demonstrated that foliar water mass disproportionately increases with increasing leaf dry weight. Although scaling relationships of leaf dry weight vs. leaf area for many plants were investigated, few studies compared the scaling relationship based on leaf dry weight with that based on leaf fresh weight. In this study, we used the data of three families (Lauraceae, Oleaceae, and Poaceae, subfamily Bambusoideae) with five broad-leaved species for each family to examine whether using different measures for leaf biomass (i.e., dry weight and fresh weight) can result in different fitted results for the scaling relationship between leaf biomass and area. Reduced major axis regression was used to fit the log-transformed data of leaf biomass and area, and the bootstrap percentile method was used to test the significance of the difference between the estimate of the scaling exponent of leaf dry weight vs. area and that of leaf fresh weight vs. area. We found that there were five species across three families (Phoebe sheareri (Hemsl.) Gamble, Forsythia viridissima Lindl., Osmanthus fragrans Lour., Chimonobambusa sichuanensis (T.P. Yi) T.H.Wen, and Hibanobambusa tranquillans f. shiroshima H. Okamura) whose estimates of the scaling exponent of leaf dry weight to area and that of leaf fresh weight to area were not significantly different, whereas, for the remaining ten species, both estimates were significantly different. For the species in the same family whose leaf shape is narrow (i.e., a low ratio of leaf width to length) the estimates of two scaling exponents are prone to having a significant difference. There is also an allometric relationship between leaf dry weight and fresh weight, which means that foliar water mass disproportionately increases with increased leaf dry weight. In addition, the goodness of fit for the scaling relationship of leaf fresh weight vs. area is better than that for leaf dry weight vs. area, which suggests that leaf fresh mass might be more able to reflect the physiological functions of leaves associated with photosynthesis and respiration than leaf dry mass. The above conclusions are based on 15 broad-leaved species, although we believe that those conclusions may be potentially extended to other plants with broad and flat leaves.en_ZA
dc.description.versionPublisher's version
dc.identifier.citationHuang, W.; Ratkowsky, D.A.; Hui, C.; Wang, P.; Su, J.; Shi, P. (2019) Leaf fresh weight versus dry weight: which is better for describing the scaling relationship between leaf biomass and leaf area for broad-leaved plants. Forests, 10(3), 256; https://doi.org/10.3390/f10030256en_ZA
dc.identifier.issn1999-4907en_ZA
dc.identifier.urihttp://hdl.handle.net/10019.1/118350
dc.language.isoenen_ZA
dc.publisherMDPIen_ZA
dc.rights.holderAuthors retain copyright
dc.subject.lcshAllometry -- Mathematical modelsen_ZA
dc.subject.lcshLauraceae en_ZA
dc.subject.lcshBambusoideaeen_ZA
dc.subject.lcshOleaceaeen_ZA
dc.subject.lcshLeaves -- Growth -- Measurementen_ZA
dc.subject.lcshPhotosynthesis -- Measurementen_ZA
dc.subject.lcshPlant allometryen_ZA
dc.subject.lcshGrowth (Plants) -- Climatic factorsen_ZA
dc.titleLeaf fresh weight versus dry weight : which is better for describing the scaling relationship between leaf biomass and leaf area for broad-leaved plantsen_ZA
dc.typeArticleen_ZA
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