This is exactly what it means to "buy property," by the way: nobody else can use it and the government enforces that if necessary using men with guns. So what I'm suggesting is only a slight refinement of the normal and expected arrangement when buying property.
Tariffs have a lot of side effects. They are very messy, politically. They create winners and losers in both countries.
It seems what you're talking about is leasing the land, which is entirely different. Also unlikely considering how much industry it would displace in their economy (which is the reason this is a problem in the first place).
That kind of deal would have ridiculous rates for the opportunity cost, won't stop illegal deforestation or crimes through plausible deniability, and we'll still end up with an expensive military and political presence to oversee everything. Also many other countries will start to ransom environmental support for a paycheck.
I see nothing but negatives with this strategy. We can't just pay countries to change their behavior that easily.
The only thing that will happen is the locals will become resentful of the foreigners who are preventing them from using their own land, someone will rise to power riding on that resentment, they'll use the money to raise an army, and then they'll kick out the foreigners and renege on the deal.
there is no such things as "buying property" between nations with out transferring sovereignty. Look at the louisiana purchase, purchase of alaska, etc for examples of doing it correctly in a long term sustainable way.
look at hong kong for examples of doing it wrong: the chinese "bought" hong kong from the british 100+ years ago but guess what? the hong kong people don't care.
I'm not sure about that.
> there is no such things as "buying property" between nations with out transferring sovereignty
Not with that attitude.