Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

Applications of a hydro-biogeochemical model and long-term simulations of the effects of logging in forested watersheds

Applications of a hydro-biogeochemical model and long-term simulations of the effects of logging... We simulated hydrological and biogeochemical responses to logging in a forested watershed to determine the vulnerability and/or resiliency of the forest ecosystems in the Lake Shumarinai Basin in northern Hokkaido, Japan. We used a biogeochemical model (PnET-CN) and a rainfall–runoff model (HYCYMODEL) to predict ecosystem responses. The PnET-CN model simulated well the observed NO3 − concentrations in streamwater, particularly at high concentrations during snowmelt; however, the model could not simulate small increases in NO3 − during the summer. By considering hydrological processes within the watershed and combining the model with the HYCYMODEL (PnET + HYCYMODEL), the seasonality of streamwater NO3 − concentrations was better simulated. Using these models, the long-term effects of logging were simulated for coniferous, deciduous, and mixed forests. NO3 − concentrations in streamwater increased in response to the logging disturbance in both coniferous and deciduous forests. In the coniferous forest, NO3 − concentrations reached a maximum 10 years after logging, and high concentrations persisted for 30 years. In contrast, NO3 − concentrations in the deciduous forest reached a maximum within 3–4 years and recovered to pre-disturbance levels after 15 years. We also used the models to determine the effects of different sizes and types (coniferous, deciduous, and mixed forest) of logging areas on Lake Shumarinai. The model results indicated that large areas of cutting require more than 100 years for complete lake recovery. Whereas the annual discharge to the lake minimally increased, the annual NO3 − load greatly increased. Our simulation results elucidate the vulnerability and resiliency of forest ecosystems and provide valuable information for ecosystem management. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Sustainability Science Springer Journals

Applications of a hydro-biogeochemical model and long-term simulations of the effects of logging in forested watersheds

Download PDF
10 pages

Loading next page...
 
/lp/springer-journals/applications-of-a-hydro-biogeochemical-model-and-long-term-simulations-TmzsXq9JZ1

References (38)

Publisher
Springer Journals
Copyright
Copyright © 2009 by Integrated Research System for Sustainability Science, United Nations University, and Springer
Subject
Environment; Environmental Management; Climate Change Management and Policy; Environmental Economics; Landscape Ecology; Sustainable Development; Public Health
ISSN
1862-4065
eISSN
1862-4057
DOI
10.1007/s11625-009-0079-z
Publisher site
See Article on Publisher Site

Abstract

We simulated hydrological and biogeochemical responses to logging in a forested watershed to determine the vulnerability and/or resiliency of the forest ecosystems in the Lake Shumarinai Basin in northern Hokkaido, Japan. We used a biogeochemical model (PnET-CN) and a rainfall–runoff model (HYCYMODEL) to predict ecosystem responses. The PnET-CN model simulated well the observed NO3 − concentrations in streamwater, particularly at high concentrations during snowmelt; however, the model could not simulate small increases in NO3 − during the summer. By considering hydrological processes within the watershed and combining the model with the HYCYMODEL (PnET + HYCYMODEL), the seasonality of streamwater NO3 − concentrations was better simulated. Using these models, the long-term effects of logging were simulated for coniferous, deciduous, and mixed forests. NO3 − concentrations in streamwater increased in response to the logging disturbance in both coniferous and deciduous forests. In the coniferous forest, NO3 − concentrations reached a maximum 10 years after logging, and high concentrations persisted for 30 years. In contrast, NO3 − concentrations in the deciduous forest reached a maximum within 3–4 years and recovered to pre-disturbance levels after 15 years. We also used the models to determine the effects of different sizes and types (coniferous, deciduous, and mixed forest) of logging areas on Lake Shumarinai. The model results indicated that large areas of cutting require more than 100 years for complete lake recovery. Whereas the annual discharge to the lake minimally increased, the annual NO3 − load greatly increased. Our simulation results elucidate the vulnerability and resiliency of forest ecosystems and provide valuable information for ecosystem management.

Journal

Sustainability Science – Springer Journals

Published: Sep 3, 2009

There are no references for this article.