The research indicates (1) fluctuation between expansionary path and falling trend took place in land use types during the past 20 years.
研究表 明：（1）20年间各土地利用类型经历着“涨势”与“落势”的波动。
The research indicates (1) fluctuation between expansionary path and falling trend took place in land use types during the past 20 years.
研究表 明：（1）20年间各土地利用类型经历着“涨势”与“落势”的波动。
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