a piece of populus euphratica
arbor tree
desert plant
ejina banner
environmental protection plant trees
forest river
golden beauty
heihe weak water basin
hero tree
heterophyllum
huotong
hutong
huyanglin national forest park
inner mongolia alashan league
natural wonders
poplar tree
populus euphratica
populus euphratica forest
populus sylvestris
sand barrier
the worlds only three natural rivers
trifolium
vitality
western ecological natural treasure