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不同植物配置模式对景观水质保持的影响
蒋梦冉, 刘小冬, 许铭宇, 韩瑞宏, 王佳嵩, 陈 平
仲恺农业工程学院 园艺园林学院
摘要:
为探讨不同植物配置模式对景观水质的保持效应,为生态水景植物配置提供科学依据,选 取 24 种水湿生木本植物及 12 种水生草本植物,根据植物配置原理设计 9 种复层水景植物配置模式处 理,并以无植物配置为对照,通过设置水箱试验样地,检测 pH、浊度、TN、NH4+ -N、TP 和 CODCr6 项 水质指标,并进行比较分析,筛选出最佳的植物配置模式。复层植物配置对水质具有不同程度的保持效 果。T1 处理(水石榕 Elaeocarpus hainanensis+ 木芙蓉 Hibiscus mutabilis- 方枝蒲桃 Syzygium tephrodes- 千 屈菜 Lythrum salicaria- 苦草 Vallisneria natans- 槐叶苹 Salvinia natans)对 CODCr 的降解能力最强,T3 处理(蒲桃 Syzygium jambos- 风箱树 Cephalanthus occidentalis- 三白草 Saururus chinensis- 苦草)对降 低浊度、NH4+ -N 浓度的效果最为显著,T6(木棉 Bombax ceiba+ 喜树 Camptotheca acuminata- 水团花 Adina pilulifera+ 朱砂根 Ardisia crenata- 薄荷 Mentha haplocalyx+ 圆叶节节菜 Rotala rotundifolia)对 TN、 TP 净化效果最好,较对照分别下降了 94.1%、96.3%、65.6%、58.2%、83.9%;T8 处理(香港算盘子 Glochidion zeylanicum- 石菖蒲 Acorus tatarinowii+ 鸢尾 Iris tectorum+ 香菇草 Hydrocotyle vulgaris- 苦草) 对上述 6 项水质指标均有良好的降低作用,达到Ⅱ类水质标准,pH、浊度、TN、NH4+ -N、TP 及 CODCr 较对照分别下降了 23.1%、67.2%、47.4%、39.8%、78.7%、50.0%。综合景观效果、植物生长状况及各项 水质指标,香港算盘子 - 石菖蒲 + 鸢尾 + 香菇草 - 苦草复层植物配置(T8)处理的效果最佳,在微污染水 体净化和水质保持中具有良好的推广应用前景。
关键词:  木本植物  草本植物  复层水景  植物配置  水质保持
DOI:
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基金项目:
Effects of Different Plant Configuration Patterns on the Maintenance of Landscape Water Quality
JIANG Meng-ran, LIUXiao-dong, HANRui-hong, XU Ming-yu, WANG Jia-song, CHEN ping
Zhongkai University of Agriculture and Engineering
Abstract:
To explore different plant configuration mode to keep the effect of landscape water quality, which will provide a scientific basis for ecological water landscape plant configuration, selection of 24 kinds of raw water wet woody plants and 12 kinds of aquatic plant, according to the principle of plant configuration design of 9 kinds of stratified water processing plant configuration mode, and is contrast with no plant configuration,by setting the water tank to test samples, test pH, turbidity, TN, NH4+ -N, TP and CODCr six measures of water quality, and comparative analysis, select the best plant configuration mode. The arrangement of compound plants can maintain the water quality to different degrees. T1 treatment (Elaeocarpus hainanensis+Hibiscus mutabilisSyzygium tephrodes-Lythrum salicaria-Vallisneria natans-Salvinia natans) of CODCr degradation ability, the strongest T3 treatment (Syzygium jambos-Cephalanthus occidentalis-Saururus chinensis-Vallisneria natans) to reduce the turbidity, the most significant effect of the concentration of NH4+ -N T6 (Bombax ceiba+Camptotheca acuminata-Adina pilulifera+Ardisia crenata-Mentha haplocalyx+Rotala rotundifolia) of TN, TP purifying effect is best, has fallen by 94.1%, 96.3% and 65.6% respectively than control, 58.2%, 83.9%; T8 processing (Glochidion zeylanicum-Acorus tatarinowii+Iris tectorum Maxim+Hydrocotyle vulgaris-Vallisneria natans) of the above 6 quality indexes have good reduction effect, achieve Ⅱ class water quality standard, pH, turbidity, TN, NH4+ -N, TP and CODCr fell by 23.1%, 67.2% and 47.4% respectively than control, 39.8%, 78.7%, 50.0%. Based on the comprehensive landscape effect, plant growth status and various water quality indicators, the best treatment effect is achieved by T8, which has a good promotion and application prospect in the purification and water quality maintenance of micro-polluted water bodies.
Key words:  woody plants  multi-layer waterscape  plant configuration  water quality conservation