- Based on mitigation and adaptation viewpoint in water sensitive city- A case study in serious land subsidence area in Yunlin, Taiwan   click here to open paper content2045 kb
by    Chang, Hsueh-Sheng & Chen, Tzu-Ling | changhs@mail.ncku.edu.tw   click here to send an email to the auther(s) of this paper
Short Outline
A coupling model of urban water balance on land use change can analyze the
relationship between land use development, anthropogenic activities and
water cycling, and further simulate different scenarios to propose
appropriate land use patterns while achieving water safety, water
satisfaction, and water environment communities.
Abstract
Global climate changes has speed up and strengthen disasters frequencies
and scale, such as tsunami in Southeast Asia in 2004 and Japan in 2011.
Excessive urbanization, unbalanced water usage, and land use out of control
result in serious planning failures. In fact, urban development changes
land-use coverage directly which affects overall water cycling and
eventually leads to flood disaster. Hence, international organizations,
both European Union Framework Programme (EUFP) and World Meteorological
Organization (WMP) started to integrate water adaptation approach, water
cycle concept and water balance in land use plans. A thorough consideration
of water balance and spatial planning might become significant urban flood
mitigation strategy (WMO, 2010).

Owing to the geographic features and climate condition, Yunlin County
undertakes food provisions responsibility in Taiwan. For quite some time,
the excess ground water withdrawn led serious land subsidence inland
coupling sea level rising under global climate change result in flood
disasters and saltwater intrusion, which affected local residents’ lives
and property critically. It is necessary to integrate both specialties of
land use planning and water balance to construct as environment, “living
with water.” We propose to apply water balance concept into a water
sensitive city like Taiwan Yunlin, and further construct water safety
(without flood), water satisfaction (reasonable ground water withdrawn),
and water environment communities.

Previous studies have already explored water balance and land use coverage
change and further responded to flood issues. The concept of water balance
can be divided into three categories. The 1st category discusses the
driving forces of land resource and land use change pressure imbalanced
water cycling mechanism, such as precipitation, evapotranspiration, runoff,
infiltration etc.(Emmerling and Udelhoven, 2002; Collin and Melloul, 2003;
Deal and Schunk, 2004; Haase et al., 2007; 2009). The 2nd category
emphasize the sum of water cycling management in different land uses, such
as drinking water, rainwater, waste water (Pauleit et al., 2000, 2005). The
3rd category analyze seasonal distribution balance between water and energy
(Oke, 1978; Grimmond, 1986; Mitchell, 2004, 2008).

There were various research discussed water balance and land use change
simulation, such as Sivapalan (1996), Guo (2002), Bormann (2006), Krause
(2007) etc. Sivapalan (1996) used water balance model to predict potential
impacts on hydrologic cycle of deforestation in Australia basin. Guo (2002)
integrated water balance to discuss hydrology and water sensitivity in each
grid based on global climate change point of view. Bormann (2006) used
water balance model to evaluate the effects of three different land use
plans. Different models and applications proposed in previous studies such
as Markov Chain Model, Cellular automatic Method, Logistic Regression,
Artificial Neural Network (McColl and Aggett, 2007;Liu and Seto, 2008;
Kamusoko et al., 2009;Shen et al., 2009) provide abundant references.

A coupling model of urban water balance on land use change can analyze the
relationship between land use development, anthropogenic activities and
water cycling, and further simulate different scenarios to propose
appropriate land use patterns while achieving water safety, water
satisfaction, and water environment communities. This study will first
build up water balance model based on precipitation, evapotranspiration,
runoff, infiltration on different land uses which fits to Taiwan. And then,
we will then propose appropriate land use management while simulating land
use change under water balance model. Ultimately, the water balance model
can be used for water sensitive city like Yunlin, Taiwan to practice water
balance.
Keywords
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