Factors controlling the growth and competition of invasive lianas in a river floodplain
The river floodplain is a disturbed and nutrient limited ecosystem. Frequent floods often wash away vegetation and top soil of the floodplains and set it to a condition of primary plant succession. Primary succession in such a substrate starts with perennial plants with rhizomes or other complex structures. In last few decades, the typical environments of all almost all rivers floodplains have been intervened by human activities. Many pioneering and native plant species have been reported to be replaced or outcolonized by exotic and often invasive plants. A large number of these invasive species are lianas. These invasive species due to their huge biomass turnover and other characters like symbiotic nitrogen fixation enrich the extant infertile soil with nutrients and soil moisture. As a result, river floodplains become intensely vegetated. Pueraria lobata and Sicyos angulatus are two vine species notable for their interference in fallow land and arable land, respectively. However, these species intruded in many Japanese rivers and reportedly outcolonized pioneering species like Miscanthus sacchariflorus. Their control or eradication became a serious issue at this moment. But before initiation of a control program of any invasive species, it is important to find its biology and responses to environmental factors. In this study, we examined the differences in habitat soil characteristics of these taxa to provide insight into possible mechanisms of succession and competition.
Pueraria lobata Sicyos angulatus edaphic factors regulated river
Md H.Rashid Takashi Asaeda
Department of Environmental Science & Technology, Saitama University, Saitama 338-8570, Japan;Bangla Department of Environmental Science & Technology, Saitama University, Saitama 338-8570, Japan
国际会议
The 3rd Biennial ISRS Symposium Achieving Healthy and Viable Rivers (ISRS)第3届国际河流大会
北京
英文
629-635
2013-08-05（万方平台首次上网日期，不代表论文的发表时间）