中华绒螯蟹养殖与固城湖水体氮、磷相关性研究

近年来固城湖水环境质量日益恶化的现象呈现明显,为寻求固城湖水环境质量污染原因,本文将利用物料平衡原理,建立氮磷总量的数学模型,计算固城湖中华绒螯蟹养殖每年所产生的氮磷量,经与实测结果验证,该模型是合理可行的。采用Spearman秩相关系数法计算得到,固城湖中华绒螯蟹养殖所产生的氮、磷量与固城湖大湖区、港口和河口的氮、磷量具有明显的相关性。说明固城湖中华绒螯蟹养殖可导致固城湖水体的氮磷总量呈现快速增长。为更好地保护固城湖水生态环境,应严格控制中华绒螯蟹养殖的规模,杜绝中华绒螯蟹养殖产生的有机污水直接排放入固城湖。

Correlation of Chinese mitten crab breeding and nitrogen phosphorus in Gucheng lake

In recent years,the water quality of Gucheng lake worsened gradually,in order to search the pollution reasons,a mathematical model which named nitrogen and phosphorus in the total and based on Material balance model was established in this article,and the total release of nitrogen and phosphorus to the environment generated from Chinese mitten crab was calculated in Gucheng lake.With measured results,the model was reasonable and feasible.By using Spearman rank correlation coefficient calculation,the amount of nitrogen and phosphorus generated from Chinese mitten crab breeding has a significant correlation with the amount of nitrogen and phosphorus in the Great lakes,the port and the estuary,indicating that Chinese mitten crab breeding was the leading cause of rapid growth trend of nitrogen and phosphorus in Gucheng lake.In order to protect the ecological environment of Gucheng lake,the size of Chinese mitten crab breeding should be strictly controlled,and the farming organic wastewater from that should be forbidden directly discharged into Gucheng lake.