国产高分影像在矿业城市生态安全性评价中的应用——以黑龙江省七台河市为例

为了实现矿业城市生态安全性评价，利用BJ2、GF1、ZY3等国产高分辨率卫星影像数据，采用遥感技术手段，基于GIS平台，构建景观安全评价体系。通过获取2017年度研究区内各土地资源类型分布现状数据，进行景观指数（破碎度、分离度、优势度、干扰度、脆弱度、生态风险度）计算，逐网格剖析后采用普通Kriging插值法（半变异函数）对研究区域的景观生态安全度进行定量分析与评价。结果表明：研究区内大部分地区景观生态安全处于中、中高和高水平，面积为538 951.58 hm²，占研究区面积的86.75%，呈现由矿产资源集中开采区向其外部、平原区向低山丘陵区安全等级逐渐升高，生态环境逐渐转好的趋势；低、中低安全区总面积为82 342.18 hm²，占研究区面积的13.25%，景观生态安全仍存在较大问题，需引起地方政府关注。

Application of High Resolution Remote Sensing Images in Ecological Safety Assessment of Mining Cities in China:An Example of Qitaihe County in Heilongjiang Province

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.