However, as transportation and communications expanded over the years, the economy of the reservations has become more and more fused with that of the larger society outside, exacerbating the problem of buying and selling or renting out reservation lands.
但隨著交通的發達、先住民下山工作、大批商人進入山區，以及經濟作物推廣至山地栽種等，山區經濟逐漸與整個社會經濟融為一體，山地保留地也產生轉租、轉讓和賣青（林、竹、果樹未成熟前就預售出去）等問題。