甘肃省生态安全评价及其驱动力分析

发布时间：2018-01-25 02:10

本文关键词： 生态安全评价 PSR模型空间变化驱动因素甘肃省　出处：《西北民族大学学报(哲学社会科学版)》2017年06期 　论文类型：期刊论文

【摘要】：本文基于压力—状态—响应(PSR)模型,结合遥感和统计数据,综合考虑生态、资源、社会、经济和文化的基础上,选取26个指标,构建了甘肃省生态安全评价指标体系,对甘肃省14个地州(市)86个县级行政区生态安全进行了全面分析与对比研究。结果为:甘肃省综合生态安全指数平均值为0.4 162,总体处于临界安全、预警状态;生态安全空间上呈现出西部高于中东部,中部高于东部的趋势,河西走廊祁连山脉地区明显生态安全水平高,少数民族地区生态安全水平低于汉族地区。对甘肃生态安全驱动力进行分析得到:第一,自然环境方面。甘肃自然环境恶劣,植被覆盖率较低,水土流失情况比较严重。第二,经济方面。甘肃省经济发展相对缓慢,区域间经济发展程度差异巨大。第三,社会方面。甘肃省人口基数大,人均水资源和人均耕地面积尚未达到全国平均水平。研究结果可为甘肃省生态环境受到一定破坏,生态系统结构有变化,但尚可维持基本功能,可进行生态保护与恢复,为区域可持续发展管理提供决策依据。
[Abstract]:Based on the pressure-state-response model, combined with remote sensing and statistical data, 26 indicators were selected on the basis of ecological, resource, social, economic and cultural considerations. The evaluation index system of ecological security in Gansu Province was constructed. The ecological security of 86 county-level administrative districts in 14 prefectures (cities) of Gansu Province was analyzed and compared. The results are as follows: the average comprehensive ecological security index of Gansu Province is 0.4,162. The whole is in the critical security, early warning state; The ecological security space shows a trend that the western part is higher than the central part and the middle part is higher than the eastern part. The Qilian Mountains in the Hexi Corridor have a high level of ecological security. The level of ecological security in minority areas is lower than that in Han nationality areas. The driving forces of ecological security in Gansu Province are analyzed. First, the natural environment. The natural environment in Gansu Province is poor, and the vegetation coverage is low. The situation of soil and water loss is serious. Second, the economic development of Gansu Province is relatively slow, the degree of regional economic development varies greatly. Third, the social aspect. Gansu Province population base is large. The per capita water resources and per capita cultivated land area have not reached the national average level. The results show that the ecological environment of Gansu Province has been destroyed, the ecosystem structure has been changed, but the basic function can be maintained. Ecological protection and restoration can be carried out to provide decision basis for regional sustainable development management.
【作者单位】：中央民族大学生命与环境科学学院;中央民族大学少数民族事业发展协同创新中心;
【分类号】：X826
【正文快照】： 随着我国经济社会发展不断深入,生态文明建设地位和作用日益凸显。党的十八大把生态文明建设纳入中国特色社会主义事业总体布局,使生态文明建设的战略地位更加明确。习近平总书记强调,生态环境保护和生态文明建设,是我国持续发展最为重要的基础,必须把生态文明建设放在突出位

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