人民黄河2018，Vol.40Issue(2)：76-80,87,6.DOI:10.3969/j.issn.1000-1379.2018.02.016
黄河三角洲土壤盐分养分空间分异规律研究
Spatial Distribution of Soil Salinity and Nutrients in the Yellow River Delta
摘要
Abstract
The new?born wetland in the Yellow River delta was selected as the research area. The Landsat-8 remote sensing images acquired from USGS and soil salinity,TN and TP obtained by the laboratory test were used as the data source.Vegetation index and soil correlation in?dex were used to build the quantitative inversion model of the soil salinity,total nitrogen and total phosphorus in the wetland. The spatial dis?tribution rules of soil salinity,TN and TP were analyzed in the wetland of the Yellow River delta. The results show that the optimal inversion model of soil salinity is established by using 12 factors as independent variables,including 6 vegetation indices(RVI,SMI,GVSB,GRABS, ARVI and EVI)and 6 bands(B1-B6).The optimal inversion model of TN is established by using 10 factors(B5,B6,SMI,NDVI,MSAVI, GVSB,GRABS,ARVI,EVI and RVI)as independent variables. The optimal inversion model of TP is established by using 8 factors(B1-B7 and SBI)as independent variables. The Yellow River delta wetland of TN shows a trend of decreasing from both sides of the river, and the high value area is mostly concentrated in the two sides of the river and low value area is mostly concentrated in the coastal area near the sea. There is a tendency that the soil salinity decreases from the ocean to the land,increasing from the river to the outside.TP in the Yellow River delta wetland is an increasing trend from the ocean to the land,and the trend is decreasing from the river to the outside. In 1976-1996 on wetland soil salinity content and TP whole freshmen are significantly higher than that of 1996 wetlands. The complex interactions of river wa?ter,groundwater and sea water lead to the spatial variation of salinity in the wetland of the Yellow River delta.关键词
土壤含盐量/土壤养分/空间分布/黄河三角洲Key words
soil nutrients/soil salinity/spatial distribution/Yellow River delta分类
建筑与水利引用本文复制引用
刘玉斌,韩美,刘延荣,潘彬,倪杰..黄河三角洲土壤盐分养分空间分异规律研究[J].人民黄河,2018,40(2):76-80,87,6.基金项目
国家自然科学基金面上项目(41371517) （41371517）
山东省科技计划项目(2013GSF11706). （2013GSF11706）
