黄河三角洲典型地区土壤有机质空间变异

发布时间：2018-03-14 07:56

本文选题：黄河三角洲　切入点：土壤有机质　出处：《长江科学院院报》2017年05期 　论文类型：期刊论文

【摘要】：为了掌握黄河三角洲地区土壤有机质的空间变异,以黄河三角洲典型县域垦利县为研究区,通过土壤采集、分析,利用GIS软件研究其土壤有机质在空间上的变异特征。研究结果表明:研究区土壤有机质含量较低,平均值为11.37 g/kg;变异强度不大,变异系数为27.19%;土壤有机质在垦利县东部分布相对稍高,呈狭长条带状,该处靠近黄河口,有机质存在冲积、淤积;垦利县南边土壤有机质含量较低,该区域属于滩涂、沙地,有机质富集不明显;研究区地形地貌平坦,农田基础设施配套良好,排水能力强,灌溉条件好,水源充分,上述因素空间上较为一致,对土壤有机质的空间变异影响不大;土壤类型、成土母质、地形对土壤有机质也没有显著影响。土壤质地对土壤有机质含量空间变异的影响还需要进一步研究。
[Abstract]:In order to understand the spatial variation of soil organic matter in the Yellow River Delta region, taking Kenli County, a typical county area of the Yellow River Delta, as the research area, through soil collection and analysis, GIS software was used to study the spatial variation of soil organic matter. The results showed that the content of soil organic matter was low, the average value was 11.37 g / kg, and the variation intensity was not significant. The coefficient of variation is 27.19. The distribution of soil organic matter in the eastern part of Kenli County is relatively high, with a narrow strip, near the mouth of the Yellow River, where there is alluvial and silting organic matter, and the content of soil organic matter in the southern part of Kenli County is relatively low, which belongs to the tidal flat and sandy land. The enrichment of organic matter is not obvious, the terrain and landform is flat, the farmland infrastructure is well matched, the drainage capacity is strong, the irrigation condition is good, the water source is sufficient, the above factors are more consistent in space, and have little influence on the spatial variation of soil organic matter. The effect of soil texture on spatial variation of soil organic matter should be further studied.
【作者单位】：青岛农业大学资源与环境学院;青岛农业大学园林与林学院;
【基金】：国家自然科学基金项目(41601211) 土壤与农业国家重点实验室开放基金项目(Y20160007) 农业部都市农业(北方)重点实验室开放课题基金项目(DSNYZD-2015-01) 青岛农业大学高层次人才启动基金项目(1114344)
【分类号】：S153.6

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