地质灾害多发区舟曲县土地利用与生态足迹研究

Land use and ecological footprint study of geological disaster-prone areas in Zhouqu County

计算舟曲县的生态足迹、生态承载力、生态赤字,通过舟曲县生态足迹、生态承载力和生态赤字与地质灾害的关系,研究人类活动对地质灾害的影响,发现舟曲县土地利用情况在"8.7舟曲特大泥石流"灾害后明显优化,但是土地利用形式依然严峻.舟曲县大峪乡、曲告纳乡等10个乡镇人均生态赤字属于负值,表明舟曲县面临相当大的生态压力.拟合自然状态下舟曲县人均生态足迹、人均生态承载力和人均生态赤字变化曲线可以为舟曲县生态利用和规划提供依据.通过生态足迹法研究地质灾害,为定量研究人为作用对地质灾害的影响提供一种新思路.

The ecological footprint, ecological capacity and ecological deficit of Zhouqu County were calculated through a study of the relationship between the three factors and the geological disasters thereof, which can help understand what effect human activities have on geological disasters. It was found that, after the ＂severe 8.7 Zhouqu mudslides＂, the land use situation there became better, but it was still grim. In Dayu, Qugaona and other 8 townships, the per capital ecological deficit was negative, indicating that the county was still faced with considerable ecological pressure. Fitting the per capital ecological footprint, ecological carrying capacity and ecological deficit change curve under natural conditons can provide a basis for the rational ecological use and planning in the county. The use of ecological footprint can provide a new concept for a quantitative study of the impact of human activities on geological disasters.