Abstract: In order to assess the ecological safety of mining cities, by using domestic high-resolution satellite image data such as BJ2, GF1, ZY3 and remote sensing technology, the landscape safety evaluation system was constructed based on a GIS platform. The distribution status data of various natural resources and terrain factors in the study area in 2017 were obtained to calculate various landscape indexes(fragmentation index,splitting index,landscape dominance index,disturbance degree,vulnerable degree, and ecological risk). After grid analysis, the general Kriging interpolation method (semi-variogram implicit function) was used to quantitatively analyze and evaluate the landscape safety index of the whole research area. The results show that the landscape ecological security is at the middle and high level in most parts of this area, which is 538 951.58 hm², accounting for 86.75% of the total landscape. From the mining concentrated area to its exterior plains, low mountains,and hilly areas, the ecological environment is gradually improving, as shown by the upward trend of the security level. The total area of the low, middle and low security areas in the study area is 82 342.18 hm², accounting for 13.25% of the land area; Its landscape ecological security is still a big issue and needs the attention of local governments.

Key words: high resolution satellite images of China, exploitation of mineral resources, evaluation on ecological security, Qitaihe County in Heilongjiang Province