[Objective] To study the ecological pattern and the natural evolution law under global change in Ordos region in order to reveal the temporal and spatial variation of ecological environment by artificial disturbance in the mining area in Western China.[Methods] GIMMS(global inventory modeling and mapping studies) NDVI 3g datasets from 1982 to 2012 and meteorological data(temperature, precipitation, etc.) were used as data sources, and the maximum value composites(MVC) method, inverse distance weighted method, piecewise regression analysis method, correlation analysis method were employed to reveal the spatial-temporal changes of vegetation cover and uncover plants' response to temperature and precipitation changes.[Results] The start of season(SOS) of vegetation began in late April, the end of season(EOS) ended in early November, and the average duration of season(DOS) last 198 days. The initial threshold of NDVI was 0.12. The vegetation green rate(slope) was 0.002 3, and the trend of vegetation change by regression analysis showed that there was a slight improvement in 80.8% area in past 31 years. The correlation between NDVI and temperature and precipitation were 0.054 and 0.400.[Conclusions] The SOS comes a little earlier, the EOS lagged, and the DOS extended. There was a slight improvement in most area. The average annual temperature and precipitation showed an increasing trend. The NDVI change was determined by the interaction of temperature and precipitation. The correlation between NDVI and precipitation was higher than that between NDVI and temperature.