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Concerning fire frequency, a relevant drop in anthropogenic induced fire ignitions without a corresponding change in the precipitation regime occurred in 1990 as a consequence of two preventative legal acts [36], [10]: the prohibition of burning garden debris in the open (Cantonal decree approved on October 21, 1987, but operational with the corresponding penalties since January 1, 1989) and the prohibition against fireworks and celebration fires on the Swiss National Day of August 1st in case of high fire ignition danger (Cantonal decrees of July 11, 1990).
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