露天矿开采对区域生态完整性的影响研究—田家沟矿区钛磁铁矿为例

在介绍生态完整性的概念及其度量方法的基础上，以湖北省丹江口市田家沟矿区钛磁铁矿为例，从自然体系生产力、景观生态体系质量与生态系统脆弱性3个方面，阐述了露天矿开采对区域生态完整性产生的影响。结果表明：区域生物生产力的变化仅局限于项目区内；作为模地的林地优势度值从84．64％降低到80．15％，下降的幅度较小，恢复稳定性和阻抗稳定性变化也不大；各植被群落的脆弱性均属于轻微脆弱，在受到人为干扰时，森林生态系统具有稳定性和可恢复性。因此工程建设对区域生态完整性的影响在可承受的范围之内。

The effect of opencast mining on Regional Ecological Integrity.

On the basis of introduction of concept as well as methods of measurement of ecological integrity, effect of the opencast min- ing on regional ecological integrity is expounded in the paper in terms of three aspects ： productivity of natural system, quality of landscape e- cosystem and ecological fragility. The results show that productivity of natural system in the area changes just in the project area; the cover- age of forest as predominant landuse will de - cline from 84.64% to 78.35% , with small range of decline ; and, the fragility of the vegetation communities are slight. With the disturbances, the ecosystem will be stable and recoverable. So, the effect of construction of the project on regional ecological integrity is tolerable.