甘肃省生态环境敏感性评价及其空间分布

为了促进生态环境建设和保护，实施宏观规划和管理，研究以甘肃省为案例，从方法论的角度，利用生态环境现状调查资料和相关研究成果进行了生态环境敏感性的综合评价，辩识出了甘肃省主要生态环境敏感区域。研究结果表明：(1)在生态环境调查的基础上，应用GIS空间分析方法进行生态环境敏感性评价具有可操作性和结果的可靠性。(2)甘肃省的生态环境敏感性区域分布比较广泛，极敏感区占全省面积的1．1％，高度敏感区占57．4％。其中水土流失极敏感区占0．21％，高度敏感区占24．6％，主要集中在黄土高原，甘南高原南部和北部，陇南山地的西礼盆地、徽成盆地等地区；沙漠化极敏感区面积占0．8％，高度敏感区面积占33．1％，主要集中在甘肃北部、安西中部地区和肃北的东南部；土壤盐渍化基本无极敏感区，高度敏感区域占1．1％，主要集中在疏勒河中下游、黑河中游以及石羊河下游。对于这些敏感区域的保护，应该是生态环境保护和建设的重中之重。

Eco-environmental sensitivity and its spatial distribution in Gansu Province

For regional social and economic sustainable development, strengthening ecosystem management at provincial scale is prerequisite. One of the most important tool is to identify the critical or sensitive area that is easy to be degraded. So herein a methodology of eco-environmental sensitivity assessment was proposed and a case of Gansu Province was studied. Eco-environmental sensitivity was defined as the possibility of formation and generation of eco-environment problem in a given region influenced by natur...