WEI Yuchan,ZHANG Liqin.Spatiotemporal Pattern and Obstacle Factors of Land Eco-Security Early Warning in Henan Province[J].Research of Soil and Water Conservation,2020,27(03):238-246.
河南省土地生态安全警情时空演变及障碍因子
- Title:
- Spatiotemporal Pattern and Obstacle Factors of Land Eco-Security Early Warning in Henan Province
- 文章编号:
- 1005-3409(2020)03-0238-09
- Keywords:
- land ecological security early warning; entropy weight method; space-time evolution; obstacle factor; Henan Province
- 分类号:
- F301; X826
- 文献标志码:
- A
- 摘要:
- 中原经济区城镇化、工业化进程的快速推进导致区域土地生态环境压力不断增大,对河南省土地生态进行安全预警评估十分有必要。基于2005—2016年河南省土地生态安全数据,构建了基于PSR-EES模型的土地生态安全指标体系,运用熵权法与综合指数法和障碍度模型,分析了2005—2016年河南省18个地市土地生态安全警情时空演变和限制性因子。结果表明:(1)从时间序列看,2005—2016年河南省土地生态安全综合预警指数由0.725下降到0.388,警度从“中警”下降到“预警”,压力预警指数呈上升趋势,警度由“安全”上升为“较安全”,状态和响应预警指数呈下降趋势,警度均处于“安全”。(2)从空间格局看,2005—2016年河南省土地生态安全综合警情南北差异显著,压力系统和状态系统空间格局呈中部高、周围低的格局,响应系统呈中部低、西部高的空间分布格局。(3)东部和北部区域的主要障碍因子集中在与人口增长和环境保护相关的指标上; 南部和西部区域主要障碍因子集中在与生态环保和经济发展有关的指标上; 中部平原区域主要障碍因子则与农业发展、生态环境治理和经济发展状况密切指标。
- Abstract:
- The rapid progress of the urbanization and industrialization of the Central Plains Economic Zone has led to increasing pressure on the regional ecological environment, and it is necessary to carry out early warning and assessment of the security of land ecology in Henan Province. Based on the land ecological security data of Henan Province from 2005 to 2016, we constructed a land ecological security index system by using PSR-EES model, and used entropy weight method and comprehensive index method and obstacle degree model to analyze the spatial-temporal pattern of land ecological security and the obstacle factors in 18 cities and towns in Henan Province from 2005 to 2016. The results show that:(1)from the time series, the comprehensive warning index of land ecological security in Henan Province decreased from 0.725 in 2005 to 0.388 in 2016, the warning degree dropped from ‘medium alarm' to ‘slight alarm'; the pressure warning index showed an upward trend, arising from ‘relative security' to ‘security '; the state and response warning index showed a downward trend, at the level of ‘security';(2)from the perspective of spatial pattern, the differences between the south and north of the comprehensive early warning of land ecological security in Henan Province from 2005 to 2016 were obvious; the space pattern of the land ecological pressure and state system was higher in the middle areas and lower in the surrounding area, as for the response system, the results of the middle areas were better than western areas;(3)the main obstacle factors in the eastern and northern regions concentrated on the indicators related to population growth and environmental protection; those in the southern and western regions were characterized by indicators related to ecological environmental protection and economic development; and those in the central plain region were closely related to agriculture development, ecological environment governance and economic development.
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备注/Memo
收稿日期:2019-05-23 修回日期:2019-06-15资助项目:国土资源部土地利用重点实验室开放基金(KLLU201704)第一作者:韦宇婵(1993—),女,广西河池人,硕士研究生,主要研究方向为土地利用规划。E-mail:wyc_gx@sina.cn通信作者:张丽琴(1973—),女,山西曲沃人,副教授,硕士生导师,主要从事土地利用规划研究。E-mail:lqzhangt@gmail.com