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摘要:
Based on PSR framework method,the land ecological security evaluation index system of 16 cities of Anhui Province was constructed.The land ecological security value of subsystem in Anhui Province from 2000 to 2011 was calculated using the index weight which was determined by the entropy weight method,and land ecological security trend from 2012 to 2017 was forecasted using GM( 1,1) model. The results indicated that,the land ecological security index in Anhui Province from 2000 to 2017 was rising on the whole,with the average value increasing from 0. 442 in 2000 to 0. 450 in 2017,and there was a huge difference among cities; at the same time,the state index and response index of each subsystem of land ecological security also rose. GM( 1,1) model had high simulation precision and was able to predict the land ecological security level and the development trend of each subsystem of Anhui Province from 2012 to 2017. The main factors that influenced the land ecological security of Anhui Province included per capita farmland area,population density,natural growth rate of population,urbanization level,soil coordination degree,agricultural mechanization degree,and the area proportion of nature reserve,which are the focus of land ecological security regulation in the future.
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篇名 Dynamic Evaluation of Land Ecological Security in Anhui Province Based on PSR Model
来源期刊 气象与环境研究:英文版 学科 地球科学
关键词 生态安全指数 PSR模型 土地生态 安徽省 动态评价 安全评价指标体系 人均耕地面积 城市化水平
年,卷(期) 2016,(3) 所属期刊栏目
研究方向 页码范围 19-26
页数 8页 分类号 X171.1
字数 语种
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生态安全指数
PSR模型
土地生态
安徽省
动态评价
安全评价指标体系
人均耕地面积
城市化水平
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期刊影响力
气象与环境研究:英文版
双月刊
2152-3940
出版文献量(篇)
1887
总下载数(次)
1
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0
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