...集约度； 时空差异； 甘肃省；[gap=807]Key words: urban land intensive utilization degree; spatial and temporal difference; Gansu Province ...
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时空差异演变 space-time difference evolution
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初步评估了大气损耗的时空差异；
The time variation and direction variation of atmospheric loss are evaluated initially.
农业的特点是时空差异和变异性大，生产稳定性和可控程度差。
The characteristic of agriculture is space-time the difference and variability are great, it is bad to produce the stability and controllable degree.
土地资源的基本特征是土地面积的有限性和土地生产能力的时空差异性。
It is essential feature of land resources that the area is limited and the productivity is varying in time and space.
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