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首页> 外文期刊>Caldasia >EFECTO DE BORDE EN LA COMPOSICIóN Y EN LA ESTRUCTURA DE LOS BOSQUES TEMPLADOS. SIERRA DE MONTE-ALTO, CENTRO DE MéXICO
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EFECTO DE BORDE EN LA COMPOSICIóN Y EN LA ESTRUCTURA DE LOS BOSQUES TEMPLADOS. SIERRA DE MONTE-ALTO, CENTRO DE MéXICO

机译：边缘对温带森林组成和结构的影响。墨西哥中部SIERRA DE MONTE-ALTO

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摘要

Edge effects in temperate forests is studied, taking as a case study fragmented pine-oak communities of central Mexico . A total of 29 forest patches were sampled to recognize edge and interior areas with different composition and vegetation structure. In order to evaluate the edge effects at the landscape scale, we analyzed the impact of the amplitude of the edge and interior areas in 333 fragments with different spatial characteristics (size, shape and connectivity). The results indicate the existence of an edge-interior gradient that primarily impacts on forest biological composition. The area of lower ecological quality is the edge (≤ 50 m), which has high values of composition (diversity, richness and abundance), presence of species showing preference for outdoor environments ( Prunus ?serotina ,? Quercus ?rugosa ?and? Q. crassipes ) and cultivated pine ( Pinus ?patula ) or disturbed environments ( P. leiophylla ). The core area ( 100 m), unlike the edge area shows lower compositional values, but with the presence of species that prefer indoor environments ( Q. crassifolia ,? Q. obtusata ?and? P. montezumae ). A transition area ( 50- 100 m) with overlapping exterior and interior species ( Prunus ?serotina ,? Q. obtusata ?and? P. teocote ) was detected between both, but with lower composition values than those of the edge area and greater statistical similarity with the core area. While 93% of forest area corresponds to fragments still retain a core area and / or transition area, 7% is divided into a large number of small fragments formed exclusively by edge area; the latter are linear forms that pose a high potential for connectivity and restoration. This paper provides new information about the consequences of landscape fragmentation in temperate forests.
机译：以墨西哥中部零散的松橡群落为例，研究了温带森林的边缘效应。总共采样了29个森林斑块，以识别具有不同成分和植被结构的边缘和内部区域。为了评估景观尺度上的边缘效应，我们分析了333个具有不同空间特征（大小，形状和连通性）的片段的边缘和内部区域的幅度的影响。结果表明存在主要影响森林生物组成的边缘-内部梯度。生态质量较低的区域是边缘（≤50 m），边缘具有较高的成分值（多样性，丰富性和丰度），存在着对室外环境表现出偏好的物种（李属，serotina，栎属，rugosa和q）。 ）和栽培的松树（Pinus？patula）或受干扰的环境（P. leiophylla）。与边缘区域不同，核心区域（> 100 m）显示出较低的成分值，但存在偏爱室内环境的物种（Q. crassifolia，Q。obtusata和P. montezumae）。两者之间都发现了一个过渡区域（> 50-100 m），外部和内部物种（李属？serotina，？Q。obtusata？和？P. teocote）重叠，但其组成值比边缘区域的值低且更大。与核心领域的统计相似性。 93％的森林面积对应仍保留核心区域和/或过渡区域的碎片，而7％则分为大量仅由边缘区域形成的小碎片;后者是线性形式，具有很高的连通性和恢复潜力。本文提供了有关温带森林景观破碎化后果的新信息。

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