| 路正,陈英,魏苹,王东.基于熵权可拓物元模型土地利用系统健康诊断——以河西走廊为例[J].干旱地区农业研究,2017,35(1):258~263 |
| 基于熵权可拓物元模型土地利用系统健康诊断——以河西走廊为例 |
| Health diagnosis of land use system based on entropy-weighted extentic matter-element model——A case study of Hexi Corridor |
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| DOI：10.7606/j.issn.1000-7601.2017.01.38 |
| 中文关键词: 土地利用 可拓物元模型 熵权法 健康诊断 河西走廊 |
| 英文关键词:land use matter-element model entropy-weighted health diagnosis Hexi Corridor |
| 基金项目:国家自然科学基金“村民关联度与农地利用的关系研究”(71263003) |
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| 中文摘要: |
| 通过构建PSR模型的指标体系，运用熵权可拓物元模型对河西走廊的土地利用系统健康进行评价。研究结果： 2000—2014年这15年期间，根据可拓物元模型经典域取值区间，河西走廊整体土地利用系统健康水平处于N03，健康等级为临界状态，健康水平保持稳定； 河西走廊的土地系统健康水平分布具有一定的规律性，呈现出由中间向两边逐渐降低的趋势； 河西走廊生态环境脆弱，森林覆盖率、水土流失程度和土壤盐渍化率是制约土地利用系统健康水平提升的重要因素。研究表明，将熵权可拓物元模型应用于土地利用系统健康评价，可以有效地避免人为因素的干扰，客观地评价研究区域土地利用系统健康的各要素之间的关系，揭示各个指标的水平状态，挖掘土地利用系统健康存在的具体问题，适用于土地利用系统健康的评价。 |
| 英文摘要: |
| By constructing the index system based on PSR model, we used entropy-weighted extentic matter-element model to evaluate the health of land use system in Hexi Corridor. The results are as follows: (1) According to the extension of the classical domain values of matter element model, the overall land use system in Hexi Corridor in N03, health level of “critical state”, health level to maintain stability from 2000 to 2014. (2) The health level of the land system in the Hexi Corridor has a certain regularity, showing a trend of decreasing gradually from the middle to both sides. (3) The Hexi Corridor ecological environment fragile. Forest coverage rate and the degree of soil and water loss and soil salinization rate important factor which restricts the healthy level of land use system. It was concluded that entropy-weighted extentic matter-element modecan be applied to land use system health evaluation. It can effectively avoid the interference of human factors, and objectively evaluate the relationship between the various factors of regional land use system health, reveal the level of each index, and mine specific health problems in land use system. |
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