| 区域生态安全空间格局评价模型的研究 |
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| 引用本文： | 陈星.区域生态安全空间格局评价模型的研究[J].北京林业大学学报,2008,30(1):21-28. |
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| 作者姓名： | 陈星 |
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| 作者单位： | 中国科学院地理科学与资源研究所,资源与环境信息系统国家重点实验室;福州大学福建省空间信息工程研究中心 |
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| 摘 要： | 生态安全是区域社会经济可持续发展的重要保障，区域生态安全评价是区域可持续发展的科学基础。通过分析影响区域生态安全的主要因素，采用少量、有代表性的指标，建立生态安全空间格局模型；提出了用区位系数表达自然地域差异在生态环境方面的特征，为定量化表达地理空间生态环境特征和评价区域生态安全支持系统能力提供了新方法；用GDP和人口数量两个指标，描述区域人类社会系统所产生的生态安全负荷量；用区域森林分布生物量作为生态安全支持系统的能力指标。以福建省长汀县为例，对以水土流失为特征的长汀县生态安全问题进行了定量评价，结果为生态安全和比较安全的区域占全县面积的8775%。文中讨论了区域森林资源、地理特征和人为活动等因素对区域生态安全的影响，其中，人为活动是影响区域生态安全的关键因素。
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| 关 键 词： | 生态安全 空间格局 评价模型 福建长汀 |
| 文章编号： | 1000-1522（2008）01-0021-08 |
| 收稿时间： | 2006-11-13 |
| 修稿时间： | 2006年11月13 |
Spatial pattern modelling of ecological security assessment in a region |
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| CHEN Xing.Spatial pattern modelling of ecological security assessment in a region[J].Journal of Beijing Forestry University,2008,30(1):21-28. |
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| Authors: | CHEN Xing |
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| Institution: | 1 State Key Laboratory of Resources & Environmental Information System，Institute of Geographic Sciences and Natural Resources Research，Chinese Academy of Sciences，Beijing，100101，P. R. China； 2 Spatial Information Research Center of Fujian Province, Fuzhou University，350003，P.R. China. |
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| Abstract: | Ecological security is an important environmental indemnification and its assessment is a scientific foundation for the sustainable development of a region. A spatial pattern modelling of a regional ecological security had been developed by a few representative indices after considering the ecological security load and ecological security support system capacity in this paper. The paper proposes location coefficient, which is a new method to measure the regional differentiation in ecological environmental aspect. And GDP and population were used to describe the ecological security load produced by the regional human society system. Biomass of forest distribution, which is a new concept, is taken as the capacity of ecological security support system. Taking Changting County of Fujian Province as the example, the regional ecological security was assessed quantitatively for soil erosion. The results showed that the area of ecological security and comparison security in Changting County occupied 87.75 % of the total land area. The impacts of regional ecological security by forest resources, regional differentiation and human activities were discussed in this paper, and human activities are the key aspects affecting the regional ecological security. |
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| Keywords: | ecological security spatial pattern assessing model Changting County of Fujian Province |
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