Indeed, rice bowl areas of China, South Asia and Southeast Asia are losing land to urbanization and in some cases to salination caused by dams built for hydroelectric purposes and other reasons.

• 事实上，中国、南亚以及东南亚等以大米为食的地区的大米种植面积却在减少。其中一部分源于城市化，而另外一些却源于水坝以及其他原因导致的盐碱化。