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何志恒, 张全发. 南水北调中线工程对具入侵性植物传播的潜在影响评估[J]. 植物科学学报, 2007, 25(4): 335-342.
引用本文: 何志恒, 张全发. 南水北调中线工程对具入侵性植物传播的潜在影响评估[J]. 植物科学学报, 2007, 25(4): 335-342.
HE Zhi-Heng, ZHANG Quan-Fa. Assessment of the South-to-North Water Transfers Project (Middle-Route) on the Invasion of Plant Species[J]. Plant Science Journal, 2007, 25(4): 335-342.
Citation: HE Zhi-Heng, ZHANG Quan-Fa. Assessment of the South-to-North Water Transfers Project (Middle-Route) on the Invasion of Plant Species[J]. Plant Science Journal, 2007, 25(4): 335-342.

南水北调中线工程对具入侵性植物传播的潜在影响评估

Assessment of the South-to-North Water Transfers Project (Middle-Route) on the Invasion of Plant Species

  • 摘要: 南水北调中线工程为水源区丹江口库区植物提供了水流这一新的传播途径。筛选了在丹江口库区分布而尚未在工程沿线及受水区分布的植物,利用修正后的杂草风险评估系统(weed risk assessment,WRA)评估这些植物的入侵性,并结合水流传播途径和营养繁殖特征,应用一个附加筛选系统进一步评估了这些植物入侵工程沿线和受水区的能力。结果表明:共有145种水源区库区植物尚未在工程沿线及受水区分布,其中60种(41.4%)植物不具有入侵性,63种(43.4%)植物需要进一步的野外调查或者试验,7种(4.8%)植物具有潜在入侵性,15种(10.3%)植物需要更多的信息才能进行评估。具有潜在入侵性的物种均为水生或者湿生植物,表明该工程的实施将可能对输水沿线及受水区的湿地和水生生态系统产生影响。

     

    Abstract: The South-to-North Water Transfers Project will provide a new pathway-water dispersal-for plant invasion.We compared the difference in flora between the water supplying area(i.e.,Danjiangkou Reservoir Region)and water receiving areas of the project.A modified Australian and New Zealand weed risk-assessment system(WRA) were used to identify vascular plants,which occurring in the water sup-plying area but absent in the water receiving areas with potential invasiveness.Consequently,a secondary screening system concerning the dispersal and productive capacities was applied for further evaluation.There are 145 species absent in the water receiving areas in the Danjiangkou Reservoir Region.Of which,40.8% were non-invasive plants,43.5% required further investigation,and 7 species were invasive.These 7 species were aquatic and wetland species implying that the project might influence the wetland and aquatic ecosystems in the water receiving areas.

     

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