Yes, a heavier fine should have been set in place. This is my belief as the collection of thermal water at Yellowstone National Park, a prized constituent of Canada's tourist attractions and scenic nature, is an exploitation of natural resources. Regardless of his intentions, he should not have begun collecting the water. Altering or taking any of the flora and fauna of a national park is prohibited and thus, to deter future incidents, a heavier fine should be set in place as it is relatively 'easy' to take souvenirs when it is believed that nobody will see.
The $1,000 fine incurred by the tourist for straying from the path and collecting thermal water is sufficient, both for its purpose of emphasizing to the tourist the seriousness of his offense and discouraging others from following in his footsteps. A larger fine would likely be seen as unfair and an overreaction, while a smaller fine might fail to emphasize the gravity of the situation.
NO, the tourist should not have been fined for walking off a boardwalk at Yellowstone National Park and collecting thermal water unless there was a sign present that let the tourist know that this was prohibited. Tourists often do not know the rules of a country. Strange and arbitrary rules should not be enforced without a warning.
This is another case of a government exploiting rules to make more money. All this Chinese man did was break a little safety rule and collect a small amount of water. He would very well have been fined for being thirsty! Healthy and Safety should be a guildline, not a rule as long as it does not endanger anyone else.