本文關(guān)鍵詞： 濕地植物 生長(zhǎng)狀態(tài) 氮磷貯存量 季節(jié)動(dòng)態(tài)　出處：《環(huán)境工程學(xué)報(bào)》2017年01期 　論文類(lèi)型：期刊論文

【摘要】：通過(guò)對(duì)7種濕地植物種植單元的進(jìn)出口水質(zhì)指標(biāo)(TN、TP)、單位面積植物生物量、不同部位氮磷濃度及貯存量進(jìn)行了測(cè)定,分析比較了各濕地植物在不同季節(jié)的吸氮納磷能力。實(shí)驗(yàn)結(jié)果表明:7種植物種植單元氮平均去除率范圍在44.00%~70.29%,磷的去除率范圍在49.98%~70.85%;植物株高和生物量增長(zhǎng)在不同季節(jié)存在明顯差異,春夏季節(jié)植物株高和地上部分生物量增長(zhǎng)速率最快;7種濕地植物相同部位的氮磷濃度存在差異,且同種植物的地上地下部分氮磷濃度也存在差異性。運(yùn)用Two-way ANOVA分析表明,植物體內(nèi)氮磷濃度受季節(jié)影響差異大于植物種間的差異;單位面積的地上部分氮磷貯存量顯著高于地下部分,且不同植物間的氮磷貯存量也有顯著差異。因此,根據(jù)植物的不同季節(jié)的氮磷貯存量可以明確適當(dāng)?shù)氖崭顣r(shí)期,并選擇搭配不同組合模式,保證植物吸收在整個(gè)季節(jié)對(duì)人工濕地的較高貢獻(xiàn)。
[Abstract]:The import and export water quality index of 7 wetland plant planting units, the plant biomass per unit area, the nitrogen and phosphorus concentration in different parts and the storage capacity were determined. The results showed that the average nitrogen removal rate of seven plants was in the range of 44.0070.29 and the phosphorus removal rate was 49.980.85.The plant height and biomass increased in different seasons. There are significant differences in nodes, In spring and summer, plant height and aboveground biomass increased fastest. There were differences in nitrogen and phosphorus concentrations in the same parts of seven wetland plants, and there were also differences in nitrogen and phosphorus concentrations in the same plants. Two-way ANOVA analysis showed that there were differences in nitrogen and phosphorus concentrations in the same parts of wetland plants. The seasonal difference of nitrogen and phosphorus concentration in plants is greater than that among plant species, and the nitrogen and phosphorus storage in the aboveground part of plant per unit area is significantly higher than that in underground part, and there are significant differences in nitrogen and phosphorus storage among different plants. According to the amount of nitrogen and phosphorus stored in different seasons, the appropriate harvest period can be determined, and different combination patterns can be selected to ensure the higher contribution of plant absorption to constructed wetland in the whole season.
【作者單位】： 西南大學(xué)園藝園林學(xué)院;
【基金】：重慶市應(yīng)用開(kāi)發(fā)計(jì)劃項(xiàng)目(cstc2014yykf A9001) 國(guó)家林業(yè)局年度林業(yè)公益性行業(yè)科研專(zhuān)項(xiàng)項(xiàng)目(201004064)
【分類(lèi)號(hào)】：X173;X52

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