北镇新立湖湿地水深对芦苇香蒲共生关系影响的研究

Effects of water depth on symbiosis relationship between Phragmites australis and Typha orienralis in Xinlihu Wetland of Beizhen

芦苇和香蒲为辽宁省湿地1.0 m水深浅水区域优势物种,研究其共生关系对湿地保护与恢复具有重要意义。该文以北镇新立湖湿地内的芦苇和香蒲作为对象,通过对93个样方调查,分析不同水深对芦苇和香蒲生长及对其共生关系的影响。结果表明:水深显著影响芦苇和香蒲的生长,且对芦苇的影响大于对香蒲的影响。两种水生植物在共生竞争时均采用逃避策略,芦苇趋于向浅水区扩展,香蒲趋于向深水区扩展。

Phragmites australis and Typha orienralis are dominant plant species in 1.0 m depth shallow water area of Liaoning Province, therefore to research the symbiosis relationship between P. australis and T. orienralis is of great importance to wetland conservation and restoration. In this research, P. australis and T. orienralis in Xinlihu Wetland of Beizhen were studied, the effects of different water depth on growth of P. australis and T. orienralis and the symbiosis relationship between each other were studied in 93 plots. The results indicated that: water depth had significant influence on growth of T. orienralis and P. australis, and the influence on P. australis was greater than that of T. orienralis. Avoidancestrategy were employed by two aquatic plant species. P. australis tended to expand to shallow water areas, whereas T. orienralis tended to expand to deep water areas.