论文部分内容阅读
湿地土壤能有效地对营养物质滤过截留,是氮素和磷素的储藏库,能减轻水体由于氮素和磷素过高而引起的富营养化,通过土壤样品的吸附试验,研究了位于鄱阳湖南部的南矶山自然保护区沼泽湿地土壤对NH+4-N的吸附能力。结果表明,供试土壤对NH+4-N的吸附符合Langmuir、Freundlich、Temkin方程,最大吸附量为222.22mg·kg-1土,吸附常数为0.5294,最大缓冲容量(MBC)为117.65mg·kg-1土。其较强的吸附能力,使它在稳定整个鄱阳湖生态系统中发挥巨大作用。另一方面,它储存的营养物质也将为湿地中生物群落所利用,对湿地生态系统的生产力影响突出。因此,加强保护湿地土壤对鄱阳湖生态系统的稳定非常重要。
Wetland soils can effectively filter and retain nutrients, which are reservoirs of nitrogen and phosphorus, which can reduce water eutrophication caused by excessive nitrogen and phosphorus. Through the adsorption experiments of soil samples, Adsorption Ability of NH + 4-N on Soil in Marsh Wetland of Nanji Mountain Nature Reserve in Southern Poyang Lake. The results showed that the adsorption of NH + 4-N in the soils accorded with the Langmuir, Freundlich and Temkin equations, the maximum adsorption capacity was 222.22 mg · kg-1 soil, the adsorption constant was 0.5294 and the maximum buffering capacity was 117.65 mg · kg -1 soil. Its strong adsorption capacity makes it play an important role in stabilizing the entire Poyang Lake ecosystem. On the other hand, its stored nutrients will also be utilized by biomes in wetlands and have a significant impact on the productivity of wetland ecosystems. Therefore, it is very important to strengthen the protection of the wetland soil to the stability of the Poyang Lake ecosystem.