【摘要】 本文将熵权系数法与地理信息系统(GIS)技术相结合,对5.12汶川地震典型灾区——彭州市新黄村农田土壤质量进行综合评价和分级,探讨了该区域土壤质量空间分布特征,并结合震后人类活动分析其土壤质量影响因素。结果表明,研究区域土壤质量分布以2级水平为主,1级次之,3级最少,分别占区域面积的81.9%、16.7%和1.4%。震后人类活动会影响土壤质量,其中以改变土壤微生物区系结构和引入重金属物质而引起的土壤质量变化为主。更多还原

【Abstract】 This study was conducted to evaluate soil quality with entropy-weight coefficient method and geographic information systems(GIS) technology at typical disaster area of 5.12 Wenchuan Earthquake—New Huang Village,Pengzhou City.The paper also discussed spatial distribution characteristics of soil,and analyzed the effect factors of post-earthquake human activities.Results showed that soil quality of level Ⅰ,level Ⅱ and level Ⅲ in research area were measured at percentage of 81.9%,16.7% and 1.4%,respectively.Human activities after the earthquake had significant effects on soil quality;temporary settlements could influence soil quality by changing the microbial flora and introducing heavy metals.更多还原