手册:Minecraft:tree feature/红树树冠语法

"mangrove_canopy": {
 "canopy_height": <par1>,
 "canopy_radius": <par2>,
 "leaf_placement_attempts": <par3>,
 "leaf_blocks": <par4>,
 "canopy_decoration": {
   "decoration_chance": <par5>,
   "decoration_block": <par6>,
   "num_steps": <par7>,
   "step_direction": "<par8>"
 },
 "hanging_block": <par9>,
 "hanging_block_placement_chance": <par10>
}