Data From: Contrasting physiological traits of shade tolerance in Pinus and Podocarpaceae native to a tropical Vietnamese forest: Insight from an aberrant flat-leaved pine

The absence of pines from tropical forests is a puzzling biogeographical oddity potentially explained by traits of shade intolerance. Pinus krempfii, a flat-leaved pine endemic to the Central Highlands of Vietnam, provides a notable exception as it seems to successfully compete with shade-tolerant tropical species. Here, we test the hypothesis that successful conifer performance at the juvenile stage depends on physiological traits of shade tolerance by comparing the physiological characteristics of P. krempfii to coexisting species from the genus Pinus and from the Podocarpaceae, a relatively abundant and shade tolerant conifer family found in pantropical forests. We examined leaf photosynthetic, respiratory and biochemical traits.  Additionally, we compiled attainable maximum photosynthesis, maximum RuBP carboxylation (Vcmax) and maximum electron transport (Jmax) values for Pinus and Podocarpaceae species from the literature.  In our literature compilation, P. krempfii was intermed...热带森林中松树类群的缺失是一个令人费解的生物地理异常现象，其潜在成因可能与不耐荫性状相关。克雷夫菲氏松（Pinus krempfii）是越南中央高地特有的扁平叶松，它可成功与耐荫热带物种竞争，堪称该异常现象中的显著例外。 本研究通过对比克雷夫菲氏松与同属松树类群，以及分布于泛热带森林、相对丰富且耐荫的针叶树科——罗汉松科（Podocarpaceae）的共存物种的生理特性，检验“针叶树幼龄阶段的生长成功与否取决于耐荫生理性状”这一假说。 我们测定了叶片的光合、呼吸及生化特性。 此外，我们从已发表文献中收集了松树类群与罗汉松科物种的可获取最大光合速率、最大核酮糖二磷酸羧化速率（Vcmax）以及最大电子传递速率（Jmax）数据。 在本次文献汇编中，克雷夫菲氏松的相关参数处于中等……