It has long been debated that whether commercial exploitation should be limited in the wilderness areas like the forest jungles, the wild mountains, and the deserted river banks. With the expansion of the cities and the boom of the population and thus the increase of the acquired resources, more and more approvals are released no matter how fiercely environmentalists protest. In ny perspective, I think most wild areas should be protected, especially those are vital to the ecosystem and the variety of the animals and plants, however, proper utilization should also be approved in the areas like the desert.
The essectial roles that most wilderness areas play on the ecosystem are often neglected by most citizens, for the influence are so miniscule and effect our earth in a long term. However, their function are important that if some of the areas are devestated, we humans may suffer a fatal disaster: take the Amazon rain forest as an example, it has been a kingdom of millions of plants, animals, insects and bacteria and functions as the largest regulator of our planet, but due to the deforestation and global climate change, the world's biggest forest has been diminished and facing a dangering situation. As a result, hundrends of animals died evey year and plenty of insects become extinct, which will inevitably damage the variaty of the organism and decrease the pool of precious genes. The same happens in the Inner Mongolia, where grassland are destroyed and the climate there are deteriorate year by year.
In fact, most wild areas shape the earth what it looks like now in their own ways and possess their own special part in the nature. Wildwood is usually home to a big verity of animals and plants and has the capacity to hold water, regulate temperature and prevent desert from expanding. Wild areas like the isolated islands and the inaccessible mountain areas are usually the ideal places for scientific researches for their insularity. If exploited, not only  the animals and plants may be disrupted, but the climate and the natural insularity are destroyed.
Although there are hundrens of reasons to protect such areas, to prevent any use in the remaining wilderness is also irreasonable. Because some activities in those areas are not necessatiry to damage the previous ecosystems there. For example, huge solar and wind energy resources present in most desert areas, and it will result little effect in the desert to construct several facilities there, compared to the vast areas of the desert and rare oganisms there. In addition, several destruction of the wilderness areas are not human made, like the forest fires, which may be resulted from the lighning, if the laws are passed and it will be ironic to protect the forest from the natural lightning.
Laws to preserve ay remaning wilderness areas are not necessary, but specific regulations to instruct the proper use of some essential parts of the areas may be published in consideration of their importance in maintaining the balance of the ecosystem and the severe results after they are destroyed. Which parts should be treated perticularly and how to enact these regulations awaits further studies.