黄河三角洲土壤盐分时空变异特征研究

发布时间：2019-05-10 15:44

【摘要】：环渤海低平原区是中国渤海粮仓的主要构建地,该区域的海拔低,潜水位高,地下水矿化度大导致了土地含盐量高,变幅大。本文运用GIS和地统计学的方法对黄河三角洲土壤含盐量的时空变异特征进行了研究,绘制了土壤含盐量的空间分布图。结果表明:黄河三角洲盐渍土类型以氯化物型盐渍土为主,自2002—2011年盐渍化程度加剧,目前仍处于积盐状态;季节变化表现为土壤盐分秋季高于春季,且由于秋季耕作翻土,土壤盐分的变异程度较大;土壤盐渍化在层位变化则表现为表聚。Kriging插值结果表明该区域的盐分空间分布由河成高地向两侧洼地盐分逐渐增加。本研究的研究结果对于滨海水土资源的开发利用具有重要的指导作用。
[Abstract]:The low plain area around the Bohai Sea is the main place to construct the granary in the Bohai Sea of China. The low altitude, high potential water level and large salinity of groundwater lead to the high salt content and large variation of the land. In this paper, the spatial and temporal variation characteristics of soil salt content in the Yellow River Delta were studied by means of GIS and geostatistics, and the spatial distribution map of soil salt content was drawn. The results show that chloride saline soil is the main type of saline soil in the Yellow River Delta, and the salinization degree has intensified from 2002 to 2011, and it is still in the state of salt accumulation. The seasonal variation was that the soil salt content in autumn was higher than that in spring, and the variation degree of soil salt content was greater because of the overturning of soil in autumn. The results of Kriging interpolation show that the spatial distribution of salt in this area increases gradually from the river to the highland to the depression on both sides of the depression. The results of Kriging interpolation show that the spatial distribution of salt in this area increases gradually from the river to the highland to the two sides of the depression. The results of this study play an important guiding role in the development and utilization of coastal soil and water resources.
【作者单位】：海洋沉积于环境地质国家海洋局重点实验室国家海洋局第一海洋研究所;青岛海洋科学与技术国家实验室海洋地质过程与环境功能实验室;深海地球物理与资源实验室中国科学院深海科学与工程研究所;
【基金】：山东省海洋生态环境与防灾减灾重点实验室2016年度开放基金项目(201609) 国家重点研发计划项目(2016YFC04028000)资助~~
【分类号】：S156.41

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