【摘要】 以开都河流域下游绿洲为例,应用灰色关联度方法分析了6种影响因子在土地盐渍化过程的相对影响力大小。结果表明:自然和人为因素共同作用于研究区土壤盐渍化过程。土壤含盐量与土壤盐渍化影响因子之间的关联度排序0—10cm层为:地下水埋深>最近排水渠距离>高程>最近灌溉水渠距离>最近湖岸距离>地下水矿化度;10—30cm层为:地下水埋深>最近湖岸距离>最近排水渠距离>高程>最近灌溉水渠距离>地下水矿化度;30—50cm层:最近灌水渠距离>地下水埋深>最近排水渠距离>地下水矿化度>最近湖岸距离>高程。在3个不同土层深度上土壤盐渍化影响因子的影响力不同,土壤盐渍化防治需要综合考虑多种影响因子的作用。更多还原

【Abstract】 Through the spatial factor and experimental data analysis of oasis soil salinization of Kaidu River Basin,taking the downstream oasis as an example,using application of grey correlation degree analysis of each factor in size relative influence of land salinization process,six impact factors were selected.The results showed that the natural and anthropic factors commonly influenced soil salinization.Soil moisture correlation in 0—10cm layer between the amount of salt and influencing factors ranked in the order of groundwater depth>recent drainage distance>elevation>recent irrigation canals distance>recent lake distance>mineralization of groundwater;for 10—30cm layer,groundwater depth>recent lake distance>recent drainage distance>elevation>recent irrigation canals distance>mineralization of groundwater;for 30—50cm,recent irrigation distance>groundwater depth>recent drainage distance>mineralization of groundwater>recent lake distance>elevation.Each one in each soil depth on influence factors is different,soil salinization of land in the area is complex,its governance work required a comprehensive consideration of all factors.更多还原