摘要
指标体系构建是生态风险评价的核心内容.由于区域土地利用生态风险评价指标体系的构建方法不同,对同一区域采用不同方法评价的结果有较大差异.以区域土地利用生态风险为切入点,借助景观生态学的尺度分析优势及多学科知识的综合,将景观尺度作为生态系统与区域之间相对独立的中间尺度,运用尺度推绎和指标敏感性分析等方法,筛选并构建景观尺度的"源"和"汇"功能生态风险评价指标体系,科学规范指标体系的构建方法和评价模型,其分析结果能较好地反映区域生态风险变化特征,为实现区域土地利用与生态、社会、经济可持续发展提供了决策依据.
Index system construction is the core of ecological risk assessment. As different index system construction methods had been used in land use ecological risk assessment, the results of the same region are always different. In this paper, the ecological risk of land use was selected as a starting point, and also the advantages of scale analysis in landscape ecology, integrate multi-disciplinary knowledge were used. The landscape scale was regarded as an intermediate scale between ecosystem and region. Scaling and sensitive analysis method was used in screening and constructing the ＂source＂ and ＂sink＂ ecological risk system, the index was selected in ruling the method and model of the assessment. The results not only reflect the state and distribution of regional ecological risk but also provide the decision of ecological risk assessment for the sustainable development of land use in regional ecology, social and economy.
出处
《湖南师范大学自然科学学报》
CAS
北大核心
2011年第2期89-94,共6页
Journal of Natural Science of Hunan Normal University
基金
湖南省国土厅2010年度科技资助项目(2010-23)
关键词
生态风险评价
指标体系
景观尺度
土地利用
区域
ecological risk assessment
index system
landscape scale
land use
region
