【摘要】 生态风险评价是环境生态风险评价的重要组成部分,能够揭示人类活动对环境产生的综合性生态影响程度,从而为区域生态保护决策提供可靠的依据。以黑龙江省西部为例,以气候、土壤性质和土地利用状况等数据为基础,构建了区域自然背景指数、生态系统脆弱性指数、景观破碎化指数和外界干扰指数的生态风险评价指标体系,利用地理信息系统空间分析方法对黑龙江省西部2004年的生态风险状况进行分析。结果表明:研究区域生态风险的空间分布表现出明显的区域差异,区域的中心城市所在地区生态风险指数较高,齐齐哈尔西北、富裕县和林甸县东北部地区生态风险指数较低,而其他地区的生态风险指数处于过渡区域。更多还原

【Abstract】 Ecological risk assessment played a vital part in environmental and ecological risk assessment, which could reveal the ecological intergrated impact of human activities on environment and provide a reliable basis for the decision-making of regional ecological protection. The west of Heilongjiang province was an obvious case where an integrated ecological risk index, which was constitutive of regional physical background, ecosystem frangibility, landscape fragmentation and external disturbance, was built basing on climate, soil and LUCC. With the support of Geographical Information System technology, the state of ecological risk in the west of Heilongjiang province was analyzed. The results showed that the spatial distribution of ecological risk had significant differences. The ecological risk was higher in the center cities, the ecological risk was lower in the northwest of Qiqihar city, Fuyu county and northeast of Lindian county, other regions were in the middle.更多还原