论文部分内容阅读
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。
In this paper, the entropy coefficient method and geographic information system (GIS) technology are combined to evaluate and classify the farmland soil quality in Xinhuang village, Pengzhou city, which is a typical disaster area of 5.12 Wenchuan earthquake. The spatial distribution characteristics of soil quality in this area are also discussed Earthquake - induced human activities analysis of soil quality factors. The results showed that the soil quality in the study area was dominated by level 2, followed by level 1 and level 3, accounting for 81.9%, 16.7% and 1.4% of the total area, respectively. After the earthquake, human activities affected the quality of the soil, with the change of soil micro-flora and the change of soil quality caused by the introduction of heavy metals.