Monitoring of the Phytosanitary State of Navarra's Forests, Spain.

Abstract

Between 1988 and 1993 six surveys on the condition of forests in Navarra (North Spain) were carried out. The results, relating to 408 trees in 17 sampling points, showed that the overall percentage of damaged trees increased from 2.86% in 1988 to 18.6% in 1993, which indicates a general large-scale deterioration of forest condition. Among the most common… (More)
DOI: 10.1023/A:1005879728924

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