CAJ | 학술논문

通过模拟试验，比较了凤眼莲和水浮莲2种漂浮性水生植物对滇池草海水体的去氮效果。结果表明，凤眼莲（Eichhornia crassipes）和水浮莲（Pistia stratiotes）均有较强的水体去氮能力。在水体总氮（TN）、溶解性总氮（DTN）、硝态氮（NO3--N）、铵态氮（NH4+-N）初始平均浓度分别为8.40、7.20、4.12、2.59 mg·L-1，凤眼莲和水浮莲种苗投放均为1 kg的条件下，凤眼莲和水浮莲对水体总氮（TN）、溶解性总氮（DTN）、硝态氮（NO3--N）、铵态氮（NH4+-N）30 d去除率平均分别为74.24%、76.81%、87.62%、80.30%和70.10%、78.89%、94.77%、87.64%。凤眼莲和水浮莲吸收作用带走的氮占水体中总氮损失量的89.39%和82.33%，凤眼莲试验组、水浮莲试验组和对照组沉积物中氮含量占水体中氮损失量比率平均分别为6.94%、11.64%和83.51%，说明凤眼莲和水浮莲能有效吸附水体中悬浮颗粒物，进而减少了水体沉积物的形成，凤眼莲、水浮莲均能显著降低水体DO及pH值。虽然凤眼莲和水浮莲均能显著降低水体的总氮浓度，但由于水浮莲植株较脆，综合考虑，故认为大规模控制性种养凤眼莲是一种治理富营养化湖泊的可行途径。
통과모의시험，비교료봉안련화수부련2충표부성수생식물대전지초해수체적거담효과。결과표명，봉안련（Eichhornia crassipes）화수부련（Pistia stratiotes）균유교강적수체거담능력。재수체총담（TN）、용해성총담（DTN）、초태담（NO3--N）、안태담（NH4+-N）초시평균농도분별위8.40、7.20、4.12、2.59 mg·L-1，봉안련화수부련충묘투방균위1 kg적조건하，봉안련화수부련대수체총담（TN）、용해성총담（DTN）、초태담（NO3--N）、안태담（NH4+-N）30 d거제솔평균분별위74.24%、76.81%、87.62%、80.30%화70.10%、78.89%、94.77%、87.64%。봉안련화수부련흡수작용대주적담점수체중총담손실량적89.39%화82.33%，봉안련시험조、수부련시험조화대조조침적물중담함량점수체중담손실량비솔평균분별위6.94%、11.64%화83.51%，설명봉안련화수부련능유효흡부수체중현부과립물，진이감소료수체침적물적형성，봉안련、수부련균능현저강저수체DO급pH치。수연봉안련화수부련균능현저강저수체적총담농도，단유우수부련식주교취，종합고필，고인위대규모공제성충양봉안련시일충치리부영양화호박적가행도경。
In order to compare two different floating aquatic plants about the nitrogen removal effect of eutrophic water in Lake Dianchi Cao-hai, Eichhornia crassipes and Pistia stratiotes were employed to microcosm experiments. Results showed that Eichhornia crassipes and Pistia stratiotes had no obvious difference on the ability of nitrogen enrichment and the total nitrogen removal rate. Under the water total nitrogen (TN), dissolved total nitrogen(DTN), nitrate(NO3--N), ammonium(NH4+-N)initial concentration of 8.40, 7.20, 4.12, 2.59 mg·L-1, Eich-hornia crassipes and Pistia crassipes seedlings were 1 kg, the average total nitrogen(TN), dissolved total nitrogen(DTN), nitrate(NO3--N), ammonium(NH4+-N)removal rate of Eichhornia crassipes test group were 74.24%, 76.81%, 87.62%, 80.30%respectively;The average total nitrogen(TN), dissolved total nitrogen(DTN), nitrate(NO3--N), ammonium(NH4+-N)removal rate of Pistia crassipes test group were 70.10%, 78.89%, 94.77%, 87.64%respectively. The average assimilation away from total nitrogen in water nitrogen loss rate of Eichhornia crassipes and Pistia crassipes test group were 89.39%and 82.33%respectively. The average nitrogen content in the sediment of nitrogen in the water loss rate of Eichhornia crassipes, Pistia crassipes and control test group were 6.94%, 11.64%and 83.51%respectively. Eichhornia crassipes and Pistia crassipes could not only effectively inhibit the formation of sediment, but also could significantly decrease the DO and pH of the water. Although Eichhornia crassipes and Pistia stratiotes can significantly reduce the total nitrogen of water, considering the Pistia stratiotes plant is brittle, so large-scale Eichhornia crassipes planting is a feasible way to control eutrophication of lakes.