周金星,张华,周泽福,卢楠.大兴县荒漠化生态安全评价研究[J].干旱地区农业研究,2009,27(1):200~205
大兴县荒漠化生态安全评价研究
Study on eco-security assessment in Daxing County
  
DOI：10.7606/j.issn.1000-7601.2009.01.39
中文关键词:  生态安全  评价  荒漠化地区  指标体系
英文关键词:ecological security  evaluation  desertification region  index system
基金项目:林业科技支撑项目(2006BAD26B0601)
作者单位
周金星 Research Institute of Forestry CAF；Key Laboratory of Tree Breeding and Cultivation State Forestry A dministration，Beijing 100091，China 
张华 Research Institute of Forestry CAF；Key Laboratory of Tree Breeding and Cultivation State Forestry A dministration，Beijing 100091，China 
周泽福 Research Institute of Forestry CAF；Key Laboratory of Tree Breeding and Cultivation State Forestry A dministration，Beijing 100091，China 
卢楠 Department of Biological Science and Technology Beijing Forestry University，Beijing 100083，China 
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中文摘要:
      根据大兴县荒漠化地区的环境特点,提出了生态安全评价的具体指标体系和构建原则,并采用数量化原理与方法,对各指标进行了具体量级划分,同时利用关联度分析方法,确定了指标的系数,并提出了衡量生态安全程度的数量化指标、生态安全系数及其计算方法。以土壤养分、水分条件、植被状况和风力4个影响生态安全因子确定了指标体系。以土壤有机质含量、林草地覆盖度、降水量和土壤粘沙比为生态安全评价的具体指标,计算了各个因子对生态安全影响程度。根据土地利用情况,确定了大兴县624个土地利用单元的生态安全系数,采用GIS平台得到了大兴地区的生态安全评价图。研究成果可直接为环北京治沙防沙重点工程的实施提供指导,研究方法可供区域生态安全评价借鉴。
英文摘要:
      According to the Daxing desertification characteristics of the environment, study is made to establish ecological security evaluation index system and construction principle, to divide groups of coefficient by adopting quantity principle and method, to identify coefficient weight by using related degree analysis, and to put forward security coefficient and calculating method to measure ecological security.The factors, which affect ecological security, are soil, moisture, vegetation and wind force.Indexes put forwards to evaluate ecological safety according to magisterial factors and replaceable regular such as organic matter of soil, percentage of plant coverage, rainfall and propottion of sticky-sand.Based on these, the effectiveness of every factor is calculated, and the ecological safety coefficient of the every land-using plot in Daxing County is worked out, and the ecological safe appraisement picture about Daxing County is painted by GIS technique.This research technique can serve as a reference for regional ecological safety evaluation.
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