小东江污染段滨岸植物与生态恢复

Preliminarily Study on Riparian Plant and Ecological Restoration of the Xiaodong River in Maoming

对污染较严重的小东江茂名段的滨岸植物进行了初步调查,共录得维管束植物31科67属77种。发现外来入侵植物25种,占调查种数的32.47%,应引起注意。在5个调查地点中,彭村、乌石和旧村的植物组成较好,市总排和官渡桥的植物组成较差,滨岸植物的组成与水体污染的程度有关。竹叶草、星毛蕨、芋、大马蓼、水蔗草等适应性较强的非入侵植物对小东江生态恢复具有重要意义;另外,也推荐了其他一些抗污染力强的水生或湿生植物以供参考。

A survey of riparian plant distribution and composition of the Xiaodong River was undertaken in Maoming, western Guangdong. And 32 families, 67 genera and 77 species of vascular plants were recorded. With species amounting to 25 and taking up 32.47% in total, invasive alien plants should be paid more atten- tion. Among 5 sites, Pengcun, Wushi and Jiucun had better riparian plant composition and less water pollution than Shizongpai and Guanduqiao, which indicated that riparian plant composition was related to the extent of water pollution. Some non-invasive species with good adaptability, for instance, Oplismenus compositus, Am- pelopteris prolifera, Colocasia esculenta, Polygonum lapathifolium, Apluda mutica and so on, might be impor- tant to ecological restoration of the Xiaodong River. Besides, some other Hydrophytes or hygrophytes with bet- ter anti-polluted capability were also suggested.