Firstly, the mechanism of urban expansion and cultivated land evolution is explored through analyzing the conversion relationship between different land use types of Dongguan city in 1998-2013.
首先，分析了1998-2013年东莞市各用地类型间的转换关系，对城市扩张与耕地演化的机制进行了探究；
The use of arable land to complete the conversion value of the land will be cultivated land into arable land and the output value, we have had effectiveness of the use of arable land.
耕地利用完成了耕地价值转换，将耕地投入价值与耕地产出价值比较，便产生了耕地利用效益问题。
The use of arable land to complete the conversion value of the land will be cultivated land into arable land and the output value, we have had effectiveness of the use of arable land.
耕地利用完成了耕地价值转换，将耕地投入价值与耕地产出价值比较，便产生了耕地利用效益问题。
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