乡土 is a noun that refers to one's native land, home village, or the place where one grew up. It carries strong emotional and cultural connotations of attachment to one's roots. In modern Chinese, it is frequently used attributively (like an adjective) before nouns such as 气息 (flavor), 文化 (culture), or 观念 (concept) to mean 'local', 'native', or 'rustic' — think 'local flavor' or 'native soil' as a cultural concept rather than literal dirt.