骆马湖滨岸缓冲带土壤性质的空间异质性分析

Soil Property Spatial Heterogeneity of Riparian Buffer Zone in Luoma Lake

通过野外调查、采样以及地统计学的方法,研究了骆马湖东南岸有草和无草两块滨岸缓冲区土壤的氮、磷、有机质含量的异质性特征,探讨植物带对污染物的富集、截留作用。结果表明:有草区土壤的TN、TP及有机质的平均含量均大于无草区;在骆马湖滨岸缓冲带,不同的植物群落对氮、磷元素的截留、富集效率差异不大;植物群落对有机质的截留作用不明显,有草区和无草区的有机质含量的性质较为接近。滨岸缓冲带植物能够通过吸收、截留、吸附、分解等作用减少湖泊水体中的碳、氮、磷的含量。研究结果可为骆马湖非点源的治理提供理论参考,为湖泊滨岸缓冲带的研究和构建提供借鉴。

In order to explore pollutant enrichment and interception of the plant zone,soil heterogeneity of nitrogen,phosphorus,organic matter content in Luoma Lake Southeast Coast riparian buffer zone was studied through field investigation,sampling and geostatistical methods.The results showed that the average TN,TP and organic matter content in area with plants were greater than the area without plants.In Luoma Lake Shore buffer zone,interception effect of different plant communities on nitrogen and phosphorus was nearly the same;interception effect on organic matter was not obvious.Plants in riparian buffer zone can reduce carbon,nitrogen,phosphorus content in water of the lake through interception,uptake,adsorption and decomposition.Results can provided theoretical references for Luoma Lake non-point source management,and can be used as a reference for research and establishment of riparian buffer zone.