Wang Qing-Hai, Duan Liu-Sheng, Wu Ju-Ying, Yang Juan
College of Agriculture and Biotechnology, China Agricultural University, Beijing 100094, China.
Ying Yong Sheng Tai Xue Bao. 2008 May;19(5):1131-7.
Nine aquatic plant species commonly found in northern China were transplanted in a horizontal subsurface flow constructed wetland in Beijing region to study their growth vitality in the wetland and their removal ability to the pollutants in domestic sewage. The results showed that the wetland's front unit had greater contribution to the COD, TN and TP removal than the rear ones, and all test plant species could grow well in the wetland. After growing for 112 days, different plant species had significant differences in their N and P contents and total biomass (P <0.05). For most species, the N and P contents were higher in underground than in aboveground part, and the biomass ratio of under-/aboveground part (U/A) was close to or exceeded 1. The accumulated N and P in the plants ranged from 1.36 to 7.89 g m(-2) and from 0.19 to 1.07 g m(-2), respectively, and the N and P accumulation in plants were more affected by plant biomass than by its N and P contents. Among the test plant species, Iris pseudacorus ranked the first in setting up the constructed wetland, followed by Typha angustifolia, Acorus calamus, and Triarrhena sacchariflora, whereas Alisma plantago-aquatica and Arundo donax were not recommended due to their sensitivity in cold winter in northern China.
在中国北方常见的9种水生植物被移植到北京地区的水平潜流人工湿地中，以研究它们在湿地中的生长活力及其对生活污水中污染物的去除能力。结果表明，湿地的前端单元对化学需氧量、总氮和总磷的去除贡献比后端单元更大，并且所有受试植物物种在湿地中都能良好生长。生长112天后，不同植物物种的氮和磷含量以及总生物量存在显著差异（P<0.05）。对于大多数物种，地下部分的氮和磷含量高于地上部分，地下/地上部分生物量比（U/A）接近或超过1。植物中氮和磷的积累量分别为1.36至7.89 g m(-2)和0.19至1.07 g m(-2)，植物中氮和磷的积累更多地受植物生物量影响，而非其氮和磷含量。在受试植物物种中，黄菖蒲在构建人工湿地方面排名第一，其次是狭叶香蒲、菖蒲和荻，而由于在中国北方寒冷冬季较为敏感，不建议种植泽泻和芦竹。
