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苏北海涂围垦区表层土壤体积质量的空间异质性研究
Authors
姚荣江
杨劲松
邹平
陈小兵
Publication date
1 January 2009
Publisher
Abstract
针对不当开发利用导致滩涂土壤理化性质恶化的现实状况,以苏北海涂围垦区为研究区域,应用地统计学方法研究了表土层体积质量这一物理性质的空间异质性.结果表明:研究区表层土壤表现出紧实趋势,各植被类型下表土层体积质量均为弱变异强度;表土层体积质量的分布总体表现为各向同性,较好地符合指数模型;受结构性因素与随机性因素共同作用,表土层体积质量表现为中等空间相关性.Moran's I系数分析表明,表土层体积质量呈较弱的相关关系,随机性因素是引起其空间异质性的关键原因.水稻种植区表土层体积质量要明显高于棉花种植区,其空间分布格局不仅与土地利用方式差异密切相关,土壤质地差异也是较为重要的因素.该研究为海涂围垦区中、低产地及障碍土壤的合理利用与科学管理提供一定的参考依据
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Last time updated on 19/08/2023