Distribution Pattern of Ageratina altissima Along Trails at Mt. Umyeon in Seoul, Korea
2014
Kim, H.O., Department of Forest Sciences, Seoul National University, Seoul, Republic of Korea | Jang, Y.L., Department of Forest Sciences, Seoul National University, Seoul, Republic of Korea | Park, P.S., Department of Forest Sciences, Seoul National University, Seoul, Republic of Korea
Ageratina altissima is an invasive plant species known to threaten native plant communities in Korea. A. altissima is thought to invade shady forests from disturbed open areas; however, uncertainty remains as to how shade and litter depth might affect establishment. A study of A. altissima distribution characteristics in areas adjacent to trails was undertaken at Mt. Umyeon in Seoul, Korea. Increasing densities of A. altissima were found to correlate with greater light availability and decreasing litter depth (p 0.001) within 10 m distance from trail locations and on ridges rather than further within forests and valleys. The effects of soil moisture content, soil gravel content and soil pH on distribution were not found to be significant, suggesting that A. altissima is adaptable to a broad range of soil conditions. Results indicate that forest areas close to trails may be particularly susceptible place to A. altissima invasion, demonstrating the need to carefully consider implications for A. altissima expansion in trail management.
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