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中国农学通报 ›› 2015, Vol. 31 ›› Issue (26): 122-127.doi: 10.11924/j.issn.1000-6850.casb15050119

所属专题: 资源与环境 农业生态 耕地保护

• 资源 环境 生态 土壤 气象 • 上一篇    下一篇

基于熵权物元模型的四川省土地生态安全评价

常婷婷,姜世中,彭文甫   

  1. (四川师范大学地理与资源科学学院,成都 610066)
  • 收稿日期:2015-05-21 修回日期:2015-06-24 接受日期:2015-07-14 出版日期:2015-09-23 发布日期:2015-09-23
  • 通讯作者: 常婷婷
  • 基金资助:
    国家自然科学基金项目“基于LUCC扰动影响的成都平原土地生态安全作用机理研究”。

Evaluation of Land Eco-security of Sichuan Province Based on Entropy Weight and Matter Element Model

Chang Tingting, Jiang Shizhong, Peng Wenfu   

  1. (College of Geography and Resources Science, Sichuan Normal University, Chengdu 610066)
  • Received:2015-05-21 Revised:2015-06-24 Accepted:2015-07-14 Online:2015-09-23 Published:2015-09-23

摘要: 为进一步了解四川省土地生态安全现状,基于P-S-R模型建立评价指标体系,选取熵权法和物元法对四川省18个地级市土地生态安全做出评价,结果表明:成都土地生态安全级别为“临界安全”,自贡、泸州、广元、内江和达州的土地生态安全级别向“安全”级转化,攀枝花、德阳、绵阳、遂宁、乐山、南充、眉山、宜宾、巴中和资阳的土地生态安全级别向“较安全”级转化,广安和雅安土地生态安全级别向“较不安全”级转化。综合单指标关联度和综合关联度得出,四川省各地级市土地生态安全总体趋于向良好转变。

关键词: 土壤有机碳, 土壤有机碳, 活性有机碳, 有机碳稳定性, 团聚体, 施肥

Abstract: In order to understand the status of land eco-security of Sichuan Province, evaluation index system based on P-S-R model was built, land eco-security of 18 cities in Sichuan Province was evaluated with the method of entropy weight and matter element. The results showed that: the land eco-security level of Chengdu was “criticality safety”, the land eco-security level of Zigong, Luzhou, Guangyuan, Neijiang and Dazhou transformed to “safety”, the land eco-security level of Panzhihua, Deyang, Mianyang, Suining, Leshan, Nanchong, Meishan, Yibin, Bazhong and Ziyang transformed to “safer”, the land eco-security level of Guangan and Yaan transformed to “less safe”. Combined with single index correlation degree and comprehensive correlation degree, land eco-security of every city of Sichuan Province tended to be good.