摘要
土壤侵蚀潜在危险度评级标准把人口环境容量失衡度、年降水量、植被覆盖度、地表松散物质厚度、坡度、土壤可蚀性、岩性、坡耕地占坡地面积比例等8个因子作为评价的主要因素,其中把人口环境容量失衡度作为首要因素加以考虑,权重值最大,占20%.研究人口环境容量失衡度对土壤侵蚀潜在危险度评价具有重要意义.以青岛市为例,对各乡镇的人口环境容量失衡度进行了尝试性的计算.
The study of the soil erosion petential danger is of great impertance. Based on GIS, the study of Soil Erosion Potential Danger is still a petential field, so this paper discusses the extracting method of the main factors and the categorical model of the degree of soil erosion petential danger. The soil erosion petential danger is comprehensively considered to be caused by the following eight factors, including pepulation, rainfall, vegetation, soil horizon thickness, terrain, soil erosibility, lithology and the percentage of sloping cultivations to sloping fields, among which taken pepulation as the most effective one, weighted at 20%. The author calculates the pepulation environmental capacity non-balance degree of Qingdao.
出处
《山东师范大学学报（自然科学版）》
CAS
2005年第3期59-61,共3页
Journal of Shandong Normal University(Natural Science)
基金
国家自然科学基金资助项目(40376024)
关键词
土壤侵蚀潜在危险度
土壤有效系数
人口环境容量失衡度
soil erosion potential danger
effective coefficient of soil
population environmental capacity non-balance degree
