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银川平原盐渍土时空格局及其与土地利用强度变化关联关系的空间区位特征,可从土地利用强度的角度阐释土壤盐渍化的动因,为盐渍化因地制宜的治理提供参考依据。本文重点研究了盐渍土空间分布定量遥感生成方法,通过土地利用遥感制图、半方差函数的地统计学方法和灰色关联度分析法,对2004-2010年银川平原的土地利用强度变化、土壤盐渍化程度变化及各类盐渍土与土地利用强度的关联度,进行了空间区位分布特征的可视化表达。研究结果表明:银川平原的发展仍具集聚效应,土地利用强度变化与城镇体系格局、交通干线、沟渠分布、土壤盐分含量密切相关;2004-2010年间,银川平原土壤盐渍化存在整体减轻、局部加重的空间分布特征,与土地利用强度变化间的响应关系,存在较明显的空间差异;银川平原土壤盐渍化程度变化与土地利用强度变化间的关联度为0.7781,与水体、耕地这2种土地类型间的关联程度最高。银川平原土壤盐渍化的干扰活动中,水体与耕地类型的利用行为是较重要的影响因子。
Spatial and temporal distribution of the saline soil in Yinchuan Plain and its relationship with the spatial variation of land use intensity can explain the motivation of soil salinization from the perspective of land use intensity and provide reference for the salinization treatment according to local conditions. This paper focuses on the quantitative remote sensing method for the spatial distribution of saline soil. Through the land use remote sensing mapping, the geostatistical method of semi-variance function and the gray relational analysis method, this paper analyzes the change of land use intensity, The degree of the degree of waterlogging and the degree of correlation between the various types of saline soil and the intensity of land use, the visualization of the spatial location distribution was carried out. The results show that the development of Yinchuan Plain still has agglomeration effect. The change of land use intensity is closely related to the urban system, traffic trunk, ditches and distribution of soil salinity. From 2004 to 2010, there is overall reduction of soil salinization in Yinchuan Plain, There was a significant spatial difference between the spatial distribution of aggravated spatial distribution and the response of land use intensity. The correlation between the degree of soil salinization and the change of land use intensity was 0.7781 in Yinchuan Plain, The highest degree of correlation between land types. Yinchuan plain soil salinization disturbance activities, the use of water bodies and cultivated land types are more important influencing factors.