By establishing mathematical models in the range, quantitative and spatial dynamic change, trend and state index of LUCC, the spatial-temporal characteristics of LUCC can be deeply studied.
通过建立研究区LUCC幅度、LUCC数量和空间变化模型以及趋势与状态指数模型，很好的表现了研究区LUCC的时空特征。
Analysis shows that the system not only can quantitatively predicate the spatial distribution and temporal change of the dust, but also the source, density in the air, transfer and deposition.
分析表明，预报系统不仅能定性预报沙尘天气的空间分布与时间演变，而且能定量预报沙尘源地、大气中的沙尘浓度、沙尘的输送以及沉降。
Based on the fog and haze data from 11 meteorological stations in Shanghai, the temporal and spatial climatic characteristics and change laws of fog and haze days in recent 50 years were analyzed.
利用上海11个气象站点近50年的雾日和霾日统计资料，从时间和空间两方面分析了上海雾、霾日数的气候特征和变化规律。
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