| 杨倩倩,陈英,金生霞,赵佳琪.西北干旱区土地资源生态安全评价——以甘肃省古浪县为例[J].干旱地区农业研究,2012,30(4):195~199 |
| 西北干旱区土地资源生态安全评价——以甘肃省古浪县为例 |
| Evaluation of ecological security of land resources in arid areas of Northwest China——A case study of Gulang County in Gansu Province |
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| DOI：10.7606/j.issn.1000-7601.2012.04.35 |
| 中文关键词: 土地资源生态安全 优化型PSR框架模型 熵权法 古浪县 |
| 英文关键词:ecological security of land resources optimized PSR frame entropy method Gulang County |
| 基金项目:甘肃省古浪县土地利用总体规划专项基金 |
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| 中文摘要: |
| 以古浪县为研究区域，在国内关于区域土地资源生态安全评价研究成果的基础上，依据优化型PSR框架模型，结合西北干旱区的土地利用结构特
点，建立古浪县土地资源生态安全评价指标体系。运用熵权法与综合评分法计算古浪县土地资源生态安全值，得出了古浪县不同时段土地资源生态安全的动态变化，并对结果进行对比
分析。结果表明：古浪县由1995年和2002年的“风险”状态转变为2009年的“敏感”状态，土地资源生态安全状况稍有好转。 |
| 英文摘要: |
| Based on research achievement on ecological security of land resources, choosing Gulang County in Gansu Province as research region, combining optimized PSR frame and land use structure in arid area in Northwest China, the index system of evaluation on ecological security of land resources in Gulang County was established. Ecological security indexes of land resources were calculated by entropy method and colligate grade, and dynamic diversification of ecological security of land resources in different period of time was studied. The results indicate that the ecological security of land resources has been improved since 1995, but is still in an alarm state. |
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