Patterns and determinants of wood physical and mechanical properties across major tree species in China

Zhu, Jiang; Shi, Yue; Fang, Le Qi; Liu, Xing E.; Ji, Cheng Jun

doi:10.1007/s11427-015-4847-y

Cited by 22 publications

(11 citation statements)

References 32 publications

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“…, Zhu et al. ), climatic indices were selected as potential determinants of global forest heights; the climatic indices include four temperature indices (annual mean temperature [AMT], mean temperature of the wettest quarter [MTWQ], mean temperature of the driest quarter [MTDQ], and mean temperature of the coldest quarter [MTCQ]) and four moisture indices (annual precipitation [AP], precipitation of the wettest month [PWM], the difference between annual precipitation and annual potential evapotranspiration [P−PET], and the difference between annual precipitation and annual actual evapotranspiration [P−AET]). Other climatic indices were not used because of their high correlations with the chosen ones.…”

Section: Methodsmentioning

confidence: 99%

Global patterns and determinants of forest canopy height

Tao

Guo

et al. 2016

Ecology

110

107

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Abstract. Forest canopy height is an important indicator of forest biomass, species diversity, and other ecosystem functions; however, the climatic determinants that underlie its global patterns have not been fully explored. Using satellite LiDAR-derived forest canopy heights and field measurements of the world's giant trees, combined with climate indices, we evaluated the global patterns and determinants of forest canopy height. The mean canopy height was highest in tropical regions, but tall forests (>50 m) occur at various latitudes. Water availability, quantified by the difference between annual precipitation and annual potential evapotranspiration (P−PET), was the best predictor of global forest canopy height, which supports the hydraulic limitation hypothesis. However, in striking contrast with previous studies, the canopy height exhibited a hump-shaped curve along a gradient of P−PET: it initially increased, then peaked at approximately 680 mm of P−PET, and finally declined, which suggests that excessive water supply negatively affects the canopy height. This trend held true across continents and forest types, and it was also validated using forest inventory data from China and the United States. Our findings provide new insights into the climatic controls of the world's giant trees and have important implications for forest management and improvement of forest growth models.

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Section: Methodsmentioning

confidence: 99%

Global patterns and determinants of forest canopy height

Tao

Guo

et al. 2016

Ecology

110

107

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“…Exploring the associations of nutrient content across organs may be a way to reveal the allocation strategies of nutrients for tree species. From the ontogenetic perspective, plant nutrient contents across organs are tightly coordinated, and their associations can be examined by scaling relationship analyses 2 6 7 10 . Scaling relationships among plant traits are widely studied, mainly in two ways: relationship of different traits within a specific organ and relationship of the same traits among organs.…”

mentioning

confidence: 99%

Nutrient allocation strategies of woody plants: an approach from the scaling of nitrogen and phosphorus between twig stems and leaves

Yan

Chen

et al. 2016

Sci Rep

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Allocation of limited nutrients, such as nitrogen (N) and phosphorus (P), among plant organs reflects the influences of evolutionary and ecological processes on functional traits of plants, and thus is related to functional groups and environmental conditions. In this study, we tested this hypothesis by exploring the stoichiometric scaling of N and P concentrations between twig stems and leaves of 335 woody species from 12 forest sites across eastern China. Scaling exponents of twig stem N (or P) to leaf N (or P) varied among functional groups. With increasing latitude, these scaling exponents significantly decreased from >1 at low latitude to <1 at high latitude across the study area. These results suggested that, as plant nutrient concentration increased, plants at low latitudes showed a faster increase in twig stem nutrient concentration, whereas plants at high latitudes presented a faster increase in leaf nutrient concentration. Such shifts in nutrient allocation strategy from low to high latitudes may be controlled by temperature. Overall, our findings provide a new approach to explore plant nutrient allocation strategies by analysing the stoichiometric scaling of nutrients among organs, which could broaden our understanding of the interactions between plants and their environments.

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“…Večinoma razvrščajo pajesen med vrste z nekoliko slabšimi mehanskimi lastnostmi, čeprav Becker (2009) poroča o primerljivih vrednos:h z javorjem, hrastom, jesenom in brezo. Tudi ameriški raziskovalci (Alden, 1995;Moslemi & Bhagwat, 1970) lastnos: in uporabnost pajesena primerjajo s srednje gos:mi listavci, enako potrjuje tudi širša raziskava, opravljena na Kitajskem (Zhu et al, 2015).…”

Section: Uvod Introductionunclassified

Tehnološke lastnosti in uporabnost lesa velikega pajesena v primerjavi z lesom velikega jesena

Gorišek¹,

Plavčak²,

Straže³

et al. 2018

les-wood

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Izvleček: Veliki pajesen (Ailanthus al:ssima (Mill.) Swingle)) spada med najbolj invazivne tujerodne drevesne vrste v Evropi in pri nas. Zaradi velike obnovitvene moči se hitro širi, predvsem na golosekih, na opuščenih kme1jskih površinah ter ob prometnih poteh. Botanično se razlikuje od velikega jesena (Fraxinus excelsior L.), sicer pa nanj značilno spominja z izgledom drevesa kot tudi s strukturnimi lastnostmi lesa. Zaradi tega smo primerjalno analizirali vizualne, anatomske in nekatere fizikalne ter mehanske lastnos1 obeh lesnih vrst. V vseh anatomskih ravninah smo potrdili značilno vizualno in barvnometrično podobnost obeh proučevanih lesov. Anatomsko se raziskani venčasto porozni lesni vrs1 razlikujeta predvsem v velikos1 in razporedu trahej ter parenhimskega tkiva. Lesova imata podobni gosto1, pajesen pa je bolj dimenzijsko nestabilen. Mehanske lastnos1 lesa pajesena so le nekoliko slabše od 1s1h pri lesu velikega jesena. Določili pa smo 20 % manjšo upogibno togost ter povprečno 50 % nižjo trdoto lesa pajesena v primerjavi z lesom velikega jesena. Nasprotno pa je bila strižna trdnost pri pajesenu 30 % višja. Glede na ugotovljene lastnos1 je les pajesena uporaben za predelavo v celulozo in papir, razne lesne plošče in delno za manj obremenjene konstrukcije, ki niso izpostavljene dras1čnim klimatskim razmeram.

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Patterns and determinants of wood physical and mechanical properties across major tree species in China

Cited by 22 publications

References 32 publications

Global patterns and determinants of forest canopy height

Global patterns and determinants of forest canopy height

Nutrient allocation strategies of woody plants: an approach from the scaling of nitrogen and phosphorus between twig stems and leaves

Tehnološke lastnosti in uporabnost lesa velikega pajesena v primerjavi z lesom velikega jesena

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