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20 0 0年 1 1月和 2 0 0 1年 6月 ,通过深入细致的实地调查和分析所收集的样本 ,对抚仙湖和星云湖水系氮和磷的分布状况与动态变化进行了研究。星云湖的氮磷总量处在一个高浓度状态 ,并伴随着蓝藻水华的大爆发 ,而抚仙湖的氮磷总量浓度是星云湖的二十分之一到四十分之一。在雨季 ,抚仙湖的溶解磷和磷总量随着深度而增加 ,这暗示着下层滞水带对有机磷微粒活跃的降解作用以及由雨季地表径流增加而带来的大量的土壤矿石的沉积。在已测量和已发表资料的基础上 ,检查对星云湖和抚仙湖氮磷总量的预测。星云湖大部分外来的磷和氮从一个出口流出 ,但是估计进入抚仙湖 97%的磷和 2 5%的氮被埋藏在沉积物里。反硝化作用可能是抚仙湖中余留总氮耗损的原因。减少来自汇流区的总氮和总磷负荷是保护星云湖和抚仙湖所必不可少的
The distribution and dynamics of nitrogen and phosphorus in Fuxianhu and Xingyunhu watersheds were studied in January20, 2001 and June, 2001 through intensive fieldwork and analysis of collected samples. The total amount of nitrogen and phosphorus in Xingyun Lake is in a high concentration state accompanied by a big outbreak of cyanobacteria bloom, while the total nitrogen and phosphorus concentration in Fuxian Lake is one-twentieth to one-fortieth of that in Xingyun Lake. During the rainy season, total dissolved phosphorus and phosphorus in Fuxian Lake increased with depth, suggesting an active degradation of organophosphorus particulates in the underlying stagnant water zone and the deposition of large quantities of soil ores caused by increased surface runoff during the rainy season . Based on the measured and published data, the forecast of total nitrogen and phosphorus in the Xingyun Lake and Fuxian Lake was examined. Most of the exotic phosphorus and nitrogen from the Xingyun Lake come out of one outlet, but it is estimated that 97% of the phosphorus entering the Fuxian Lake and 25% of the nitrogen are buried in the sediments. Denitrification may be the reason for the remaining total nitrogen depletion in Fuxian Lake. Reduce the total nitrogen and total phosphorus load from the convergence area is essential to protect the Xingyun Lake and Fuxian Lake