[1]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.
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Spatiotemporal Pattern and Obstacle Factors of Land Eco-Security Early Warning in Henan Province
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
27
Number of periods:
2020 03
Page number:
238-246
Column:
目次
Public date:
2020-04-20
- Title:
- Spatiotemporal Pattern and Obstacle Factors of Land Eco-Security Early Warning in Henan Province
- Keywords:
- land ecological security early warning; entropy weight method; space-time evolution; obstacle factor; Henan Province
- CLC:
- F301; X826
- DOI:
- -
- 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.
- References:
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Last Update:
2020-04-30