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基于RRM的市级土地利用总体规划生态风险评价

DOI: 10.11870/cjlyzyyhj201507004, PP. 1102-1109

Keywords: 土地利用总体规划,生态风险评价,RRM,乐山市

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Abstract:

以乐山市土地利用总体规划为研究对象,应用相对风险模型(RelativeRiskModel,RRM),对其生态风险进行了分析和评价。评价结果表明,在规划执行期间,全市生态风险总体呈下降趋势,但在区域内的空间分布上却具有不平衡性,局部地区的生态环境会出现波动甚至恶化;作物种植、交通运输和人口负荷是规划生态风险的3个最主要来源;而林地和牧草地在所有生境类型中所受到的生态压力最大;对于生态风险结果,主要表现为区域生态系统及其组分在功能与结构上的损害。研究结果能够为乐山市土地资源开发利用和规划成果的科学决策提供理论依据,同时具有开展区域生态风险防控与管理的参考价值。

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