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Position: Home > Articles > Dynamic Assessment of Land Ecologic Safety Based on Triangle Model——A Case Study of Xi′an City Research of Soil and Water Conservation 2016,23 (1) 244-248

基于三角模型的土地生态安全动态评价——以西安市为例

作  者:
祝培甜;赵中秋;陈勇;刘少青;李茜
单  位:
中国地质大学(北京)土地科学技术学院
关键词:
土地生态安全;状态及趋势分析;三角模型;西安市
摘  要:
土地生态安全关乎人类的生存与发展,是土地资源可持续利用的核心。针对西安市的土地利用特点,选取自然、经济、社会各方面的15项评价指标,从经济可行性指数(EI)、非社会可接受性指数(NSI)和非资源环境合理性指数(NREI)三方面构建了三角模型,对西安市2005—2013年土地生态安全的状态和趋势进行了动态评价。结果表明:(1)三角模型在土地生态安全评价方面具有可行性;(2)西安市土地生态安全状态向积极方向发展。从2005年的不安全状态,演变为了2013年的一般安全转态;(3)西安市土地生态安全的变化相对有弱安全趋势→很安全趋势→一般安全趋势→很安全趋势→弱安全趋势五种变化趋势,总的来说是趋于向安全的方向发展,说明西安市土地利用日趋合理。
译  名:
Dynamic Assessment of Land Ecologic Safety Based on Triangle Model——A Case Study of Xi′an City
作  者:
ZHU Peitian;ZHAO Zhongqiu;CHEN Yong;LIU Shaoqing;LI Qian;School of Land Science and Technology,China University of Geosciences;
关键词:
land ecologic safety;;status and trend analysis;;triangle model;;Xi′an City
摘  要:
The relationship between land use ecology safety and human survival and development is extremely close,and land use ecology is the core idea of land use sustainable development.According to land use characteristics in Xi′an City,we selected 15 indexes from natural economic and social perspectives,and established the evaluation system from economic availability index(EI),non-social availability index(NSI),non resource environment appropriateness index(NREI),and carried out the dynamic assessment of the status and trend of ecologic safety of Xi′an City from 2005 to 2013based on triangle model.The results showed as follows.The triangle model was appropriate in land ecologic safety assessment.The development of land ecologic safety of Xi′an City showed the positive trend,evolving from unsafety in 2005 to general safety in 2013.The trend of land ecologic safety of Xi′an City varied as the principle:from weak safety to strong safety to general safety to strong safety to weak safety.Overall,land ecologic safety of Xi′an City showed the more positive trend and its land use was becoming more appropriate.

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