firebreak tree belt

Firebreak tree belt in the ridge of a mountain

tree belt area

tree belt at expressway

urban tree belt

ancient tree and famous tree

intolerant tree sun tree

Native tree plants indigenous tree species

’Shilixiang’ tea tree

1-3 tree

1-tree

2-3 Tree

2-3 tree insert

2-3 tree search

2-3-4 tree

2-3tree

2D combined attribute decision tree

2n-tree

2tree