基于PSR模型的土地利用系统健康动态评价
摘要
土地利用系统健康与城市社会经济发展、生态环境、人类生活质量息息相关，并对城市土地资源的可持续利用机制有着重要影响。采用文献资料法、层次分析法、多指标综合评价模型对2001-2012年广州市土地利用系统健康状况进行动态诊断与评价。结果发现：2001-2012年期间，广州市土地利用系统健康水平总体不断提高，系统健康综合指数从0.26增加到0.70，健康等级经历了“不健康-临界状态-亚健康”状态的演变过程；土地利用系统健康的压力指数略有增长，状态指数和响应指数呈现上升趋势；其中固定资产投资增长率、地均GDP、人均耕地面积、森林覆盖率、土地市场配置程度等是土地利用系统健康等级提升的关键制约因素。
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Abstract
The health of land use system is closely related to city's social and economic development, ecological environment and human life, and has an important influence on the sustainable utilization of land resources. In this paper, literature data, analytic hierarchy process, and multi index comprehensive evaluation model were used to dynamically diagnose and evaluate health status of land use system in Guangzhou during 2001 to 2012. The conclusions are as follows: Overall health level of land use system in Guangzhou during 2001 to 2012 was continuously improved. System health index increased from 0.26 to 0.70 with a progress of “unhealthy-critical state-sub health”. The land use system health pressure index rose slightly and state index and response index showed an upward trend. The growth rate of fixed asset investment, land average GDP, per capita arable land area, forest coverage, and land market allocation degree are critical factors of land use system healthy level.
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