The height of the second wave was much higher than that of the first wave, and the width of the first wave was greater than the second wave, indicating that over time, the agricultural ecological efficiency in some counties in Hebei Province improved, showing an overall trend of shifting toward high efficiency.
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Characteristics and prediction of agricultural ecological efficiency for coordination between economy and environment.
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The sentences
The study conclusions were as follows: On the whole, agricultural ecological efficiency in Hebei Province showed a trend of rising first, then decreasing slightly, and then rising again.