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首页> 外文期刊>Gayana. Botanica >ESTRUCTURA Y COMPOSICIÓN FLORÍSTICA DE UN MATORRAL BAJO PLANTACIONES DE PINUS RADIATA D.DON EN CHILE CENTRAL/STRUCTURE AND FLORISTIC COMPOSITION OF A SHRUB UNDER PINUS RADIATA D.DON PLANTATION IN CENTRAL CHILE
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ESTRUCTURA Y COMPOSICIÓN FLORÍSTICA DE UN MATORRAL BAJO PLANTACIONES DE PINUS RADIATA D.DON EN CHILE CENTRAL/STRUCTURE AND FLORISTIC COMPOSITION OF A SHRUB UNDER PINUS RADIATA D.DON PLANTATION IN CENTRAL CHILE

机译：智利中部松树人工林下灌木的结构和花序组成/智利中部松树人工林下灌木的结构和花序组成

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摘要

The structure and floristic composition of an understory under a Pinus radiata D. Don plantation in the coastal area of the central Chilean Maule Region (35° 27'43.3" S; 72° 23'56" W) is documented. Based on nine vegetation samples the vascular flora was inventoried determining species richness, frequency, cover-abundance, and values of importance as well as phytogeographic origin and life forms. The vascular flora comprises 48 taxa with a high representation of native and endemic species (19 each), including Adesmia bijuga Phil. (Fabaceae) as an endemic to the coastal mountain range of Maule Region and only 11 exotic species. The studied shrub community shows a vertical organization in layers of which the herbaceous ground layer shows the highest diversity, whereas Pinus radiata, Adesmia bijuga, and Escallonia pulverulenta Pers. show highest frequency levels. All Raunkiaer life forms are represented, being phanerophytes and hemicryptophytes the dominant life forms. The exotic species Aira caryophyllea L. and Pinus radiata have the highest importance values. We interpret the shrub community structure to be variable and complex due to the artificiallity of the vegetation composition of a planted P. radiata stand that replaced the native vegetation. Adesmia bijuga shows that the vital cycle could help to its conservation in situ under the canopy, but in a regime of risk threats its survival. In spite of little representativeness in the area the specie is outside the regional units of the SNASPE and is not considered in the Chilean Red Data Book. [PUBLICATION ABSTRACT]
机译：记录了智利毛乌尔地区中部沿海地区（35°27'43.3“ S； 72°23'56” W）辐射松下的下层林的结构和植物组成。根据九个植被样本，对维管束进行了盘点，以确定物种的丰富度，频率，覆盖度，重要性值以及植物地理起源和生命形式。脉管菌群包括48个分类单元，其中包括本地和特有物种（每个物种19个），其中包括Adesmia bijuga Phil。 （Fabaceae）是毛勒地区沿海山脉的特有种，仅11种外来物种。所研究的灌木群落显示出垂直的组织，其中草本地层表现出最高的多样性，而辐射松，Adesmia bijuga和Escallonia pulverulenta Pers则表现出较高的多样性。显示最高频率水平。代表了所有的Raunkiaer生命形式，其中以旱生植物和半隐生植物为主要生命形式。外来种Aira caryophyllea L.和Pinus radiata具有最高的重要性值。我们将灌木群落结构解释为可变的和复杂的，这是由于人工辐射的P. radiata林分取代了原始植被的植被组成的人工性。 Adesmia bijuga表明，生命周期可以帮助在树冠下进行原位保护，但处于危险状态时会威胁其生存。尽管该地区代表性不足，但该物种不在SNASPE的区域单位范围内，因此在智利红色数据手册中并未考虑。 [出版物摘要]

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    《Gayana. Botanica》 |2009年第2期|p.256-268|共13页
  • 作者

    Persy Gómez Steffen Hahn José San Martín;

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    Persy Gomez1, Steffen Hahn1 & Jose San Martin2lJardin Botanico, Universidad de Taka, Casilla 747, Taka, Chile, 2Instituto de Biologia Vegetal y Biotecnologia, Universidad de Taka, Casilla 747, Taka, Chilejbotanico@utalca.cl,;

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