| 基于三角模型的关中5市土地生态安全区域差异分析 |
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| 引用本文： | 黄美菱,黄露滴,龙飞利.基于三角模型的关中5市土地生态安全区域差异分析[J].安徽农业科学,2018,46(5):62-65. |
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| 作者姓名： | 黄美菱 黄露滴 龙飞利 |
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| 作者单位： | 长安大学地球科学与资源学院,陕西西安,710054;苍溪县城郊中学,四川苍溪,628400 |
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| 摘 要： | 选取关中平原5市为研究区,根据其土地资源利用现状和经济发展特点,以2009、2012和2015年《陕西统计年鉴》《中国城市统计年鉴》为基础数据,从经济可行性、社会可接受性和资源环境合理性三方面选取16项评价指标,进行标准化处理,运用熵权法确定权重,构建土地生态安全评价指标体系,计算综合指数。运用Grapher软件从3个时间断面构建三角模型,对关中平原5市土地生态安全进行现状和趋势分析。结果表明:三角模型能够客观清晰地反映其现状和变化趋势;关中平原五市总体呈现出经济可行性指数和资源环境合理性指数不断增加,社会可接受性指数降低;土地生态安全状态向较好的方向发展,西安市由弱安全转向一般安全,其余4市由不安全转向弱安全;区域内部发展不均衡,西安市与其余4市差距不断加大。
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| 关 键 词： | 三角模型 土地生态安全 状态及趋势 关中平原 |
Regional Difference Analysis of the Five Cities of Guanzhong about the Land Ecological Security Based on the Triangle Model |
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| HUANG Mei-ling,HUANG Lu-di,LONG Fei-li.Regional Difference Analysis of the Five Cities of Guanzhong about the Land Ecological Security Based on the Triangle Model[J].Journal of Anhui Agricultural Sciences,2018,46(5):62-65. |
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| Authors: | HUANG Mei-ling HUANG Lu-di LONG Fei-li |
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| Abstract: | Taking five cities of Guanzhong Plain as the research area according to the present situation of the land resources and the characteristics of economic development,based on Shanxi Statistical Yearbook and China City Statistical Yearbook in 2009,2012 and 2015,selected 16 indexes to build land ecological security evaluation index system from the economic feasibility,social acceptability and resource environment rationality through standardizing,determine the weight,and calculating comprehensive index by some mathematical formulas.Building a triangle mode by the software of Grapher from three years to analyze land ecological security status and trend on the Guanzhong Plain.The results showed that:The triangle model could objectively reflect its present situation and the trend clearly;It presented the economic feasibility and rationality resources environment index increased,and social acceptability decreased;The land ecological security status development to the great direction,Xi'an form weak security to general safety,and the rest of the 4 cities from unsafe to weak security;The regional internal development uneven,there was a great gap in Xi'an and other 4 cities. |
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