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http://dx.doi.org/10.5532/KJAFM.2014.16.3.157

Process Networks of Ecohydrological Systems in a Temperate Deciduous Forest: A Complex Systems Perspective  

Yun, Juyeol (Department of Landscape Architecture and Rural Systems Engineering, Seoul National University)
Kim, Sehee (Interdisciplinary Program in Agricultural & Forest Meteorology, Seoul National University)
Kang, Minseok (National Center for AgroMeteorology)
Cho, Chun-Ho (National Insititute of Meteorological Research, Korea Meteorological Administration)
Chun, Jung-Hwa (Department of Forest Conservation, Korea Forest Research Institute)
Kim, Joon (Department of Landscape Architecture and Rural Systems Engineering, Seoul National University)
Publication Information
Korean Journal of Agricultural and Forest Meteorology / v.16, no.3, 2014 , pp. 157-168 More about this Journal
Abstract
From a complex systems perspective, ecohydrological systems in forests may be characterized with (1) large networks of components which give rise to complex collective behaviors, (2) sophisticated information processing, and (3) adaptation through self-organization and learning processes. In order to demonstrate such characteristics, we applied the recently proposed 'process networks' approach to a temperate deciduous forest in Gwangneung National Arboretum in Korea. The process network analysis clearly delineated the forest ecohydrological systems as the hierarchical networks of information flows and feedback loops with various time scales among different variables. Several subsystems were identified such as synoptic subsystem (SS), atmospheric boundary layer subsystem (ABLS), biophysical subsystem (BPS), and biophysicochemical subsystem (BPCS). These subsystems were assembled/disassembled through the couplings/decouplings of feedback loops to form/deform newly aggregated subsystems (e.g., regional subsystem) - an evidence for self-organizing processes of a complex system. Our results imply that, despite natural and human disturbances, ecosystems grow and develop through self-organization while maintaining dynamic equilibrium, thereby continuously adapting to environmental changes. Ecosystem integrity is preserved when the system's self-organizing processes are preserved, something that happens naturally if we maintain the context for self-organization. From this perspective, the process networks approach makes sense.
Keywords
Process network; Complex system; Information theory; Ecohydrological system; Feedback loop; Self-organization;
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