摘要
运用地统计学,结合GIS技术研究了莱州湾南岸地区土壤含盐量空间变异性。结果表明:土壤含盐量的变异系数除表层和底层属强变异性外,其它均属中等变异强度。整个研究区土壤含盐量较高,盐渍土所占面积较大;除10～20cm和80～100cm土层土壤含盐量分布符合球状模型外,其它各层均符合指数模型。研究区不同土层土壤盐分含量具有明显的空间变异性,除60～80cm和80～100cm土层土壤含盐量具有强空间相关外性,其它各层均具有中等空间相关性。该研究为莱州湾南岸地区区域规划、农业生产和生态环境维护提供理论依据。
The spatial variability of soil salinity in the southern Laizhou Bay is investigated by using GIS technology and geostatistics. The variation coefficients of soil salinity indicate that the variability of soil salinity is strong in the surface and bottom soil layers and moderate in the other layers. The soil salinity is relatively higher and the area of salinized soil is relatively larger in the whole area studied. The distribution of soil salinity is in good coincidence with an index model in all soil layers but layers of 10~20 cm and 80~ 100 cm in which the soil salinity distribution is in coincidence with a spherical model. The salt content in different soil layers in the study area shows a significant spatial variability. A strong spatial variability of soil salinity occurs in the layers of 60~80 cm and 80~100 cm and a moderate one in the other layers. These results can provide a theory basis for the planning, agricultural production and entironment mainte- nance in the area studied.
出处
《海洋科学进展》
CAS
CSCD
北大核心
2012年第4期501-507,共7页
Advances in Marine Science
基金
海洋公益性行业科研专项经费项目--环渤海区域海水入侵
土壤盐渍化预警与防控关键技术研究示范(201105020)
科技支撑项目--重要海湾海岸带典型受损生境修复关键技术研究与示范(2010BAC68B01)
国家海洋局第一海洋研究所基本科研业务费专项--莱州湾南岸盐渍化土壤盐分动态变化及风险评估研究(2011G19)
关键词
莱州湾南岸
盐渍化
空间变异
地统计分析
Southern Laizhou Bay salinity spatial variability geostatistics analysis
