长江科学院院报2017，Vol.34Issue(5)：27-30,4.DOI:10.11988/ckyyb.20160141
黄河三角洲典型地区土壤有机质空间变异
Spatial Variability of Soil Organic Matter in Typical Areaof the Yellow River Delta
摘要
Abstract
The variation of soil organic matter plays an important role in soil fertility evaluation.In this paper,the variability of soil organic matter in space is analyzed by using geographic information system software.Soil samples were collected from Kenli County,a typical district in the Yellow River Delta.Results show that the content of soil organic matter in the study area is low,with an average value of 11.37 g/kg.The coefficient of variation is 27.19%,indicating that the total variance of intensity is not big.Soil organic matter is relatively large in content in the east part of Kenli County and distributes in a narrow strip as the east Kenli is adjacent to the mouth of the Yellow River,resulting in the deposition of soil organic matter;whereas in the south part where land use types are beach and sand,the content of soil organic matter is relatively low,and the accumulation of soil organic matter is not obvious.The study area is located in the downstream of flat river delta with enough farmland infrastructure facilities,strong drainage capacity,good irrigation conditions,as well as abundant water sources,which have little effect on the spatial variance of soil organic matter.Soil type,soil parent material,and topography have no significant effect on soil organic matter in the study area either.The effects of other factors on the spatial variability of soil organic matter content need further research.关键词
黄河三角洲/土壤有机质/空间变异/垦利县/GIS软件/影响因素Key words
Yellow River Delta/soil organic matter/spatial variability/Kenli County/GIS software/influential factors分类
农业科技引用本文复制引用
张晓光,陈明利,刘佩茹,祝秀芝,李士美..黄河三角洲典型地区土壤有机质空间变异[J].长江科学院院报,2017,34(5):27-30,4.基金项目
国家自然科学基金项目(41601211) （41601211）
土壤与农业国家重点实验室开放基金项目(Y20160007) （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) （北方）
青岛农业大学高层次人才启动基金项目(1114344) （1114344）
