日本沙漠緑化実践協会にっぽんさばくりょくかじっせんきょうかいnipponsabakuryokukajissenkyoukainounJapan Association for Greening DesertsKanji in this word会meeting化change協co-実reality日day本book沙sand漠vague緑green践treadStudy it in Yanamino