Towards a Standard Plant Species Spectral Library Protocol for Vegetation Mapping: A Case Study in the Shrubland of Doñana National Park

ISPRS International Journal of Geo-Information

Marcos Jiménez¹  Ricardo Díaz-Delgado² 

[1] Remote Sensing Area, National Institute of Aerospace Technologies (INTA), Ctra. Ajalvir s/n, Torrejón de Ardoz, 28850 Madrid, Spain;Remote Sensing and GIS Lab., Doñana Biological Station, CSIC, Avda. Americo Vespucio, 41092 Sevilla, Spain;

关键词: field spectroscopy;    plant spectral library;    standard protocol;    Doñana National Park;    shrublands;   

DOI  :  10.3390/ijgi4042472

来源: DOAJ

【 摘 要 】

One of the main applications of field spectroscopy is the generation of spectral libraries of Earth’s surfaces or materials to support mapping activities using imaging spectroscopy. To enhance the reliability of these libraries, spectral signature acquisition should be carried out following standard procedures and controlled experimental approaches. This paper presents a standard protocol for the creation of a spectral library for plant species. The protocol is based on characterizing the reflectance spectral response of different species in the spatiotemporal domain, by accounting for intra-species variation and inter-species similarity. A practical case study was conducted on the shrubland located in Doñana National Park (SW Spain). Spectral libraries of the five dominant shrub species were built (Erica scoparia, Halimium halimifolium, Ulex australis, Rosmarinus officinalis, and Stauracanthus genistoides). An estimation was made of the separability between species: on one hand, the Student’s t-test evaluates significant intra-species variability (p < 0.05) and on the other hand, spectral similarity value (SSV) and spectral angle mapper (SAM) algorithms obtain significant separability values for dominant species, although it was not possible to discriminate the legume species Ulex australis and Stauracanthus genistoides.

【 授权许可】

Unknown