瑞士古老干石墙变身微小生物迁徙的绿色走廊
In the rolling meadows and Alpine foothills of Switzerland, a quiet revolution is taking place — not with steel or glass, but with stone. Dry stone walls, built without mortar and dating back centuries, are being restored not only as cultural heritage but as vital mini-ecosystems. These structures, long dismissed as mere field boundaries, actually support a surprising web of life that is now gaining scientific attention.
A single dry stone wall can house dozens of species. The gaps between stones create perfect microhabitats for lizards like the common wall lizard, which bask on sun-warmed rock faces. Bumblebees and solitary wasps nest in the crevices, while mosses, ferns and lichens cling to the shady side. In spring, wildflowers such as yellow saxifrage and blue alpine toadflax root in the thin soil trapped between stones, adding splashes of colour.
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