But these countries have limited fuel sources such as trees, and when the number of inhabitants in one area increases excessively due to refugees, and so on, secondary environmental devastation has occurred; the neighboring trees are cut down recklessly and die off over a short period of time, among other things.
しかしこれらの国における樹木などの燃料資源は限られ、難民などの形で一極集中が起きた際には、瞬く間に周囲の樹木が乱伐採され枯れ果てるなどの二次的な環境破壊も発生している。