CAJ | 학술논문

通过灌草群丛划分、土壤采样以及室内测定、数理统计等方法,分析了黄河三角洲原生湿地灌草群落土壤的养分、盐分分布特征及相互关系,发现原生灌草群落土壤可溶性盐的垂直分布变异性较大,其中,碱蓬群丛与柽柳群丛土壤可溶性盐分布具有较强的表聚性,而土壤有机质含量表现为芦苇群丛>柽柳群丛>碱蓬群丛,且灌草群落中土壤 C/N 值都大于5,表明其有机质腐殖化程度较高。另一方面,土壤全氮与有机质存在明显的线性正相关；而土壤全盐与有机质、全氮之间存在明显的倒数关系,表明全盐对二者的制约作用,其中15~20 g/kg 的土壤盐分范围对应的是土壤全氮、有机质由迅速减少向缓慢减少的变化趋势。研究结果可以为盐碱土改良提供重要参考。
통과관초군총화분、토양채양이급실내측정、수리통계등방법,분석료황하삼각주원생습지관초군락토양적양분、염분분포특정급상호관계,발현원생관초군락토양가용성염적수직분포변이성교대,기중,감봉군총여정류군총토양가용성염분포구유교강적표취성,이토양유궤질함량표현위호위군총>정류군총>감봉군총,차관초군락중토양 C/N 치도대우5,표명기유궤질부식화정도교고。령일방면,토양전담여유궤질존재명현적선성정상관；이토양전염여유궤질、전담지간존재명현적도수관계,표명전염대이자적제약작용,기중15~20 g/kg 적토양염분범위대응적시토양전담、유궤질유신속감소향완만감소적변화추세。연구결과가이위염감토개량제공중요삼고。
The distribution characteristics of soil nutrient and soil salinity of native shrub-herb communities in the Yellow River Delta wetland and their relationship were investigated using the methods of shrub-herb association classification,soil sampling, laboratory analysis,and mathematical statistics.The results showed (1)the vertical variation of soil soluble salt differs signifi-cantly,and the distribution of soil salinity of the Suaeda glauca association and Tamarix chinensis association shows the trend of surficial accumulation;(2)the order with high to low of soil organic matter content is Phragmites communis association,Tamar-ix chinensis association,and Suaeda glauca association;(3)the C/N rate of the shrub-herb communities is higher than 5,which suggests high humification degree of soil organic matter;(4)soil total nitrogen has a positive correlation with organic matter, while soil total salinity has an inverse correlation with organic matter and total nitrogen,which indicates the restriction of total salinity on organic matter and total nitrogen;and (5)the soil salinity range from 1 5 to 20 g/kg corresponds to the transition for the rapid to slow reduction of soil total nitrogen and organic matter.The results can provide reference for the improvement of saline soil.