TSOGT, Mongolia -- Waves from the global economic downturn hit Sodnomdarjaa Khaltarkhuu when bank officials showed up at his tent on the edge of the Gobi desert and threatened to foreclose on his goats, sheep and camels.

Falling demand for cashmere among recession-hit shoppers in the West is cutting into earnings among nomadic herders in Mongolia, whose goats produce the soft fiber used in high-end sweaters, scarves and coats. The result: herder loan defaults.

Mongolians...