[1]LI Yu-qing,SONG Ge,WANG Yue,et al.Ecological Security Evaluation of Land Resources in the Cities and Counties Under the Jurisdiction of Harbin Based on Energy Analysis[J].Research of Soil and Water Conservation,2014,21(03):267-272,278.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
21
Number of periods:
2014 03
Page number:
267-272,278
Column:
Public date:
2014-06-28
- Title:
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Ecological Security Evaluation of Land Resources in the Cities and Counties Under the Jurisdiction of Harbin Based on Energy Analysis
- Author(s):
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LI Yu-qing1,3, SONG Ge1,2,3, WANG Yue1,3, WANG Xue-wei1,3
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1. College of Resources and Environment, Northeast Agriculture University, Harbin 150030, China;
2. Institute of Land Management, Northeasten University, Shenyang 110819, China;
3. Rural Development Research Center, Northeast Agriculture University, Harbin 150030, China
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- Keywords:
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energy analysis; land resources ecological security; cities and counties under the jurisdiction of Harbin
- CLC:
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F301.24
- DOI:
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- Abstract:
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Scientific evaluation of urban expansion impact of land resource ecological security of cities and counties has a great significance of the rational use of land resources, and promoting cities and counties under the jurisdiction of the municipality in the economic, social, ecological, steady and healthy development. This paper selected cities and counties under the jurisdiction of Harbin as a study case. Based on pressure-state-impact-respose (PSIR) model and by using energy analysis method, the land resources ecological security evaluation system and enery-based urban land resource ecological security index (EULESI) were constructed, it was the analysis of correlation to energy the context of sustainable development index (EISD) and EULESI, and the variation of land resources ecological security level of the study area in 2004—2011 was evaluated. The correlation of EISD and EULESI is 0.84, which showed the strong correlation. Compared to EISD index, EULESI is more sensitive and representative to the land resource ecological security evaluation. At the same time, as the evaluation of land resource ecological security is more scientific, and it can be used for the evaluation of other similar area. The results show that the degree of land resources ecological security of the study area had been overall gradually decreasing trend from 2004 to 2011, indicating a great fluctuation and a less stable developing stage, but overall it was at a less secure. In 2004—2006, the land resource ecological security of the study area was at the safer level, and then it was at a relatively unsafe level in 2007—2008; after two years, it was located somewhere in the level of criticality safety; the EULESI index was the lowest value for nearly 8 years, less unsafe level, and then the land resource ecological environment was being a seriously threatened. All in all, energy analysis can objectively understand the meanings of the various indices, and effectively avoiding evaluation is too subjective, the results of this study area meet with the actual situation.