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2009年5月,在黄河入海口北部的盐沼区域,按照植物类型设置了9块采样地,研究不同植物群落下盐沼土壤中硼和铝含量的分布特征及主要影响因素。结果表明,采样区盐沼土壤(0~60 cm深度)的平均硼质量比为(51.85±11.52)mg/kg,明显高于中国土壤硼含量背景值(42 mg/kg)以及黄土区的土壤硼含量(45.1 mg/kg),但略低于华北冲积平原土壤硼含量(56.2 mg/kg);盐沼土壤的平均铝质量比为(45.15±5.31)g/kg,明显低于中国土壤铝含量背景值(66.55 g/kg)、华北冲积平原土壤铝含量(63.95 g/kg)和黄土区土壤铝含量(57.55 g/kg);尽管各采样地土壤含量差异较大,但是在由陆向海方向,盐沼土壤中硼和铝的分布特征整体相似,且在水平方向上的变异都为中等变异或弱变异,在垂直方向上,土壤硼和铝含量多呈波动变化,且在同一采样地土壤中二者含量的变化也存在较大差异;土壤硼含量、铝含量分别与土壤有机质、黏粒含量、粉粒含量都显著正相关,都与砂粒含量显著负相关。成土母质决定了黄河口盐沼土壤中硼和铝含量的空间分布,土壤有机质含量、粒度组成是影响二者空间分布的主导因素,而植物群落类型、潮汐和水盐条件对其分布亦具有重要影响。
In May 2009, nine sampling sites were set up in the salt marshes in the northern part of the Yellow River estuary to study the distribution of boron and aluminum contents in salt marsh and their main influencing factors under different plant communities. The results showed that the average boron mass ratio of saline marsh (0-60 cm depth) in sampling area was (51.85 ± 11.52) mg / kg, which was significantly higher than the background value of boron content in China (42 mg / kg) and the soil in loess area Boron content (45.1 mg / kg) but slightly lower than that in the alluvial plain of North China (56.2 mg / kg). The average aluminum mass ratio in saline marsh soil was (45.15 ± 5.31) g / kg, (66.55 g / kg), Al content in the alluvial plain in North China (63.95 g / kg) and Al content in the Loess Plateau (57.55 g / kg). Although the content of soil in each sampling area is quite different, , The distribution characteristics of boron and aluminum in salt marsh soil are similar in overall, and the variation in the horizontal direction is medium or weak variation. In the vertical direction, the contents of boron and aluminum in soil fluctuate widely, and in the same sample soil The content of boron and aluminum in soil were significantly and positively correlated with soil organic matter, clay content and grain content, respectively. There was a significant negative correlation between soil boron content and sand content. Soil parent material determines the spatial distribution of boron and aluminum in salt marsh soil of the Yellow River estuary. Soil organic matter content and grain size composition are the dominant factors affecting the spatial distribution of the two. However, the plant community types, tidal conditions and water and salt conditions also have their distribution Significant influence.