【摘要】 以重庆市为例,在GIS技术支持下,利用模糊数学和多元数理统计方法对研究区土壤养分贫瘠化现状进行了综合评价。根据评价结果,采用地理信息系统软件ARCVIEW绘制了重庆土壤养分贫瘠化状况的等级图。结果表明,这一地区土壤养分大多处于中度贫瘠化水平,土壤养分处于轻度、中度和严重贫瘠化的面积比例分别为17.42％、47.75％和34.83％。其中,水田土壤的养分贫瘠化程度相对较林旱地土壤要重。更多还原

【Abstract】 Taken Chongqing city as an example, under the support of GIS, fuzzy maths and multivariate statistical analysis methods are also used to comprehensively evaluate the status of soil nutrient depletion of Chongqing. According to the result, Soil nutrient depletion evaluation result was mapped using Arc View software . The result shows that soil nutrients were mostly in the level of middle depletion in this area. The sum percentage of low - grade、middle and strongest depletion were 17.42%, 47.75% and 34.83% respectively. Thereinto, the level of soil nutrient depletion in paddy field is more serious than that in woodland and dry land.更多还原