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研究了乌裕尔河湿地自然径流区和人为控制区各两个样带的土壤有机质、TN、TP在垂直于径流方向上的空间分异特征,结果表明在坡面径流和洪泛作用的影响下,表层土壤有机质、TN、TP表现出较高的空间异质性,在垂直于径流方向上呈现出累积-消减的趋势,0~15 cm土壤累积-消减趋势明显大于15~30 cm土壤,自然径流区的哈塔、龙安桥样带累积-消减趋势明显大于人为控制区的石家店、龙泡子样带,并应用空间输出/累积系数SEC进行量化和模拟,讨论了不同的土壤养分类型、湿地水文情势随机性及缓冲带植被群落结构对土壤养分空间分异的影响。
The spatial heterogeneity of soil organic matter, TN and TP in the two run-offs of the natural runoff and man-made controlled areas in the Wuyuer River wetland was studied in the direction perpendicular to the runoff. The results show that the effects of runoff and flooding on the slope , TN and TP showed high spatial heterogeneity and showed the trend of cumula- tion and depletion in the direction perpendicular to the runoff. The cumulative-decreasing trend of 0-15 cm soil was significantly greater than that of 15-30 cm soil, The accumulative-descending trend of the Hata and Long’anqiao transects in the natural runoff area was significantly larger than that of the Shijiadian and Longzaozi zones in the man-made controlled area, and was quantified and simulated by the spatial output / accumulation coefficient SEC. The effects of different soil nutrients Type, wetland hydrological stochasticity and impact of buffer zone vegetation community structure on soil nutrient spatial variability.