七道河流汇沙海绿洲,红碱淖构筑黄土高原与草原生态缓冲廊道 Seven seasonal rivers converge to form an oasis, building an ecological corridor linking Loess Plateau and grasslands. #DesertWetland 幸福小筑(💯互Fo❗️❗️) @mengwei73526359 · 2026-06-15