Abundancia relativa, frecuencia y riqueza de plantas vasculares a escala local. Metodología de Índices de Ocupación de la Flora (aplicada a La Alcarria Occidental)

Estudios Geográficos

Juan Javier García-Abad Alonso¹ 

[1] Departamento de Geología, Geografía y Medio Ambiente. Universidad de Alcalá

关键词: Geografía de las plantas;    escala local;    ocupación de la flora;    riqueza vascular;    La Alcarria Occidental;    Géographie des plantes;    échelle local;    occupation de la flore;    richesse vasculaire;    “La Alcarria�? de l’Ouest;   

DOI  :  

学科分类：自然科学（综合）

来源: Estudios Geograficos

【 摘 要 】

In order to clarify biogeographic concepts and know in detail vascular richness, a survey method at local scale is proposed. This employs the 1x1 km UTM grid cell (ED50) as basic information unit and a 10x10 km grid cell as the main spatial unit. Two UTM grid cells belonging to the same natural region (Western “La Alcarria�?) are analyzed in different sectors of it (30TWL02 and 30TVK86) to propitiate their comparison. The results were: a) discrimination of two plant groups due to phenological differences, b) design and formulation of two new indices that quantify the floral cover, c) detection of high values of vascular richness (around to a thousand of taxa in 100 km 2 ); and d) exhibition of a Checklist of plants whose distribution can be mapped with resolution of 1 km 2 . The spatial comparison and plant ordering that allow those indices will be very useful for making finer interpretations and phytogeographical applications.

【 授权许可】

Unknown