[1]LI Ling,HOU Shu-tao,ZHAO Yue,et al.Evaluation and Forecast of Land Ecology Security of He’nan Province Based on P-S-R Model[J].Research of Soil and Water Conservation,2014,21(01):188-192.
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Evaluation and Forecast of Land Ecology Security of He’nan Province Based on P-S-R Model
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
21
Number of periods:
2014 01
Page number:
188-192
Column:
Public date:
2014-02-28
- Title:
- Evaluation and Forecast of Land Ecology Security of He’nan Province Based on P-S-R Model
- CLC:
- F323.211
- DOI:
- -
- Abstract:
- According to P-S-R framework model, the evaluation index system of land ecological security was built, the composite index model was used to evaluate the land ecological security situation in He’nan Province from 2002 to 2011, and the gray system GM(1, 1) model was used to predict the land ecological situation in the next nine years. Results showed that the land ecology was at a critical security level, and the secure value fluctuated around 0.45 from 2002 to 2011 and would decrease from 2012 to 2020. It indicated that the structure of land ecological system had been changed and the land ecological environment had been destroyed to some extent, land ecosystem service function had begun to degenerate. The basic ecological system functions were fair to maintain, but could be deteriorated easily after disturbance, and land ecological environment would be fragile, restricting the development of regional economy. This study can provide the basis to improve the regional eco-environmental planning and ecological security management.
- References:
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1900-01-01