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China’s 'Green Great Wall' tames desert growth, but the fight is not over

The generations of work have yielded measurable progress, but scientists caution that preserving the gains will require decades of continued effort.

The Star MalaysiaPhotos: AP查看原文 ↗
中国的“绿色长城”遏制了沙漠扩张,但这场斗争远未结束。

Yin walks along sand dunes covered by grass checkerboard.

For half a century, millions of workers have repeated a task across the deserts in northern China: inserting forearm-length sticks into shifting sand, first in a row, then in an intersecting line, gradually forming a grid. Then saplings are planted at the centre of each small square.

The technique, known as "straw checkerboards”, is a simple yet widely used method to stabilise sand dunes against the wind and help plants take root by using water supplied through an irrigation system.

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