Residents of a neighbourhood in Chennai drawing up a tree map for their local park

Namachivayam has drawn up a rough map, a pen sketch, with the trees located on it and named. The park is circular; it “hangs out” with two streets — Indira Nagar Fourth Cross Street and Indira Nagar Sixth Lane — which curve sufficiently to give the park its rotund shape. From the rough, partial drawing of the park with a listing of the trees by their names, one can see that if this tree list was run through the Simpson Reciprocal Index, it would return a high value, indicating a diversity of tree species. These residents want to have a nameboard (tied not nailed) around each tree, indicating its species. A QR code in a boxy space on the nameboard will provide in-depth details about the tree, when scanned. Just one nameboard sans the QR code (for a Mahilam tree) has been created on a trail basis, says Namachivayam. Hands have gone up to take up various aspects of the nameboard-assigning and tree-map work.