Version 1
: Received: 12 January 2017 / Approved: 12 January 2017 / Online: 12 January 2017 (10:05:06 CET)
How to cite:
Shih, D.-S.; Wu, R.-S.; Tsai, C.-Y. Assessing Hydrological Impacts of a Watershed in the Context of Climate and Land Cover Changes. Preprints2017, 2017010061. https://doi.org/10.20944/preprints201701.0061.v1
Shih, D.-S.; Wu, R.-S.; Tsai, C.-Y. Assessing Hydrological Impacts of a Watershed in the Context of Climate and Land Cover Changes. Preprints 2017, 2017010061. https://doi.org/10.20944/preprints201701.0061.v1
Shih, D.-S.; Wu, R.-S.; Tsai, C.-Y. Assessing Hydrological Impacts of a Watershed in the Context of Climate and Land Cover Changes. Preprints2017, 2017010061. https://doi.org/10.20944/preprints201701.0061.v1
APA Style
Shih, D. S., Wu, R. S., & Tsai, C. Y. (2017). Assessing Hydrological Impacts of a Watershed in the Context of Climate and Land Cover Changes. Preprints. https://doi.org/10.20944/preprints201701.0061.v1
Chicago/Turabian Style
Shih, D., Ray-Shyan Wu and Chung-Yuan Tsai. 2017 "Assessing Hydrological Impacts of a Watershed in the Context of Climate and Land Cover Changes" Preprints. https://doi.org/10.20944/preprints201701.0061.v1
Abstract
This paper proposes a method to utilize weather and land cover models to generate future environmental scenarios, and presents the watershed models to simulate the hydrological impact on watershed-scale hydrology. The Weather Generator model and General Circulation Model were applied to produce rainfall and local temperature under different climate conditions, and the Conservation and Land Use and its Effects model was incorporated to simulate future land cover variability. The circumstances of future climate and land cover changes were used as inputs to drive the HEC-HMS rainfall runoff model for obtaining surface runoff in a mountainous area. The WASH123D model was then utilized for the entire watershed simulation. Modeling results were then examined to discuss hydrological impacts on three different time periods: near future (2020-2039), future (2050-2069), and distant future (2080-2099). The Fengshan Creek basin in northern Taiwan was selected as study site. Simulations results indicated that the influence of climate change revealed more relevant effects when compared to local land cover changes. The ground water levels tended to diminish as the land cover area changed. In addition, both river and groundwater levels reveal that it is drier in dry season and wetter in wet season in future.
Keywords
climate change; land cover change; WASH123D
Subject
Engineering, Civil Engineering
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.