[1]WANG Yanhui,CHEN Zhuo,CAO Yu,et al.Analysis on the Dynamic Change and Resistance of Cultivated Land Ecological Security in the Past 20 Years in Hebei Province[J].Research of Soil and Water Conservation,2017,24(01):194-199,206.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
24
Number of periods:
2017 01
Page number:
194-199,206
Column:
Public date:
2017-02-28
- Title:
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Analysis on the Dynamic Change and Resistance of Cultivated Land Ecological Security in the Past 20 Years in Hebei Province
- Author(s):
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WANG Yanhui1, CHEN Zhuo1, CAO Yu1, ZHANG Junmei2, SU Gang1
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1. College of Resources and Environment Science, Agricultural University of Hebei, Baoding, Hebei 071000, China;
2. College of Land and Resources, Agricultural University of Hebei, Baoding, Hebei 071000, China
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- Keywords:
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cultivated land; ecological security; PSR model; Hebei Province; resistance
- CLC:
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F323.21
- DOI:
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- Abstract:
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Cultivated land ecological security is related to food security and regional sustainable development. We used the PSR model to construct the cultivated land ecological security index system in Hebei Province by choosing the cultivated land ecological system pressure, status ecological system pressure, status and response as three criterion layers, and selecting 17 indicators layers such as the natural population growth rate, land reclamation rate, per capita net income of peasant. Then we adopted information entropy method and resistance diagnosis model to make an analysis of the cultivated land ecological security situation from 1991 to 2010 in Hebei Province. The results showed that: (1) from 1991 to 2010, cultivated land ecological security situation in Hebei Province had experienced ‘unsafely’, ‘less safety’, ‘criticality safety’; (2) from the view of single indicator change trend, the rise of the indicator of resistance degree was larger such as the unit of cultivated land fertilizer load, agricultural load and pesticide load from 1991 to 2010 in Hebei Province. The system pressure and the degree of resistance of the system state rose, but the response of the system resistance degree presented the downward trend. Therefore, in order to protect the cultivated land ecological security, the attention should be paid to the management of pesticide and fertilizer use, prevention of the cultivated land ecological environment worsening in the cultivated land utilization process.