CAJ | 학술논문

土壤盐次生渍化是干旱内陆盆地绿洲区的重要环境问题之一,其程度常以表层土壤含盐量来衡量.表层土壤含盐量是气候、土地利用方式:土壤岩性、潜水位埋深等因素综合作用的结果.针对新疆焉耆盆地严重的土壤次生盐渍化问题,采用信息统计方法研究了焉耆盆地开都河北岸地区表层土壤含盐量与土地利用类型、土壤岩件和潜水位埋深之间的关系.结果表明,焉耆盆地开都河北岸地区土地利用方式是影响土壤表层盐分空间差异的主控因素,耕地内表层土壤含盐量最低,草地和荒地区表层土壤含盐量高;土壤岩性对表层土壤盐分的影响较小,壤土区表层土壤含盐量最高,粉土区最小;潜水位埋深对表层土壤含盐量的影响明显,并具有显著的滞后性.
토양염차생지화시간한내륙분지록주구적중요배경문제지일,기정도상이표층토양함염량래형량.표층토양함염량시기후、토지이용방식:토양암성、잠수위매심등인소종합작용적결과.침대신강언기분지엄중적토양차생염지화문제,채용신식통계방법연구료언기분지개도하북안지구표층토양함염량여토지이용류형、토양암건화잠수위매심지간적관계.결과표명,언기분지개도하북안지구토지이용방식시영향토양표층염분공간차이적주공인소,경지내표층토양함염량최저,초지화황지구표층토양함염량고;토양암성대표층토양염분적영향교소,양토구표층토양함염량최고,분토구최소;잠수위매심대표층토양함염량적영향명현,병구유현저적체후성.
Secondary salinization of soil as one of the most important environmental problems in the oasis of arid inland basins is usually measured by the salt content in top soil layer. Salt content in top soil layer is affected by climate, land use, soil lithology and depth to groundwater. In order to understand the problem of soil salinization in the northwestern area of Yanqi Basin, the relationships between salt content in top soil layer and land use type, soil lithology and depth to groundwater at different times were assessed by information statistical method. Results showed that the land use type is the largest contributor to accumulation and spatial variant of salt content in top soil layer, with the lowest salt content in the farmland area and highest in wilderness. Soil lithoiogy is the least contributor to the accumulation of salt in top soil layer among the selected factors, with the highest salt content in top soil layer in the loam area and lowest in the silt area. The depth to groundwater played a very important role to the salt content of top soil layer with remarkable lag effect.