A California Startup Is Using Ashes to Protect Forests
smithsonianmag.com
smithsonianmag.com
I'd be down for a full tree growing out from my unburnt remains if it was more useful to the forest.
You can't just leave bodies on the surface because then you have all sorts of complications when people stumble across them. Even tagging or otherwise identifying left bodies has its own set of issues such as becoming an ideal way to dispose of a body - most likely it would be pretty easy to forge whatever identification would be left, and who's going to be making a practice of checking the papers of all the dead bodies found in the woods?
Edit: forgot to factor in souvenir hunters who might want to collect whatever kind of durable token might be left in & around bodies left this way. Basically, what was practical 150+ years ago no longer is.
Even if you are avoiding embalming and coffins, if you want your body disposed of in a forest like this, it somehow needs to be shipped. Burning the body locally and then shipping the ashes is a good alternative (to embalming and coffins).
The article has some stats. Cremation is about half the environmental impact of current practices. When you then add in the ability to help protect a forest with your burial plot, it seems like it would add up significantly.
I OFFER MY ROTTING REMAINS AS A GIFT TO TO THE FOREST FROM MY UNBURNT BODY COME FORTH A SAPPLING
Would work really well as a Melodic Blackened Folk Doom metal song
That said, there is nothing preventing someone from buying a few dozen acres in the Sierras making an actual forest cemetery (where the headstone is a tree). As long as plots were separated by 10' you could make bury someone and then at one end plant a sapling (its root ball being about 2' in diameter). That would be large enough to have a high chance of survival, but small enough that it would clearly be a 'new' tree.
Ridiculous they don't want you to spread your ashes.