The pressure placed by floods and droughts will increase. Careful planning is needed, while engineering should be only the final stage in the process.
The view that humans can conquer nature has long prevailed and is an extremely dangerous concept. Both structural and non-structural approaches to diminishing the impact of natural disasters should be considered, but we place too high an expectation on structural approaches, such as continuing to raise embankments and dredging rivers.
The sudden drastic increase in rain in recent years means that building embankments will not be an effective way to prevent flooding. The most effective approach to flood prevention is to find ways to coexist with water and natural disasters by relying on non-engineering flood prevention strategies that work together with the local geography, environment and urban characteristics to return water to the rivers.
Rainstorm management can be effectively integrated with urban water resource management by taking a three-dimensional approach to water conservation. It is not about removing the water, but keeping it in appropriate places, at the same time as considering damage control, pollution prevention, erosion, climate change adaptation and economic efficiency.
Urban water management should start with a focus on paths and total volumes, and it should include accumulation and seep-through mechanisms.
“Accumulation” means providing the possibility of temporarily keeping water at a suitable location, such as a square, a park, a school playground, the atrium of a big building, or other similar locations. Spaces of various sizes can be used for this function, with each location functioning as a storage pool that will diminish surface runoff and peak flood concentrations. These pools can also accumulate rainwater for recycling.
“Seep-through” means allowing water to flow vertically instead of horizontally and letting water purify through the seep-through process, while also replenishing the groundwater. This would also help prevent water from collecting rapidly in one particular place.
Rainstorm management should include countermeasures for spaces of different scale, with plans for the national, regional and urban level. Much research has built up about Taiwan’s environmentally sensitive areas, and this research could be used to create overlay maps to define areas where development should be banned, restricted or allowed.
It should also be possible to take advantage of national land planning to properly prepare different locations to aid in water management. For example in terms of urban planning, consideration should be given to the potential risk for floods when developing new areas, and controls should be applied on land use and urban design based on the special characteristics of rainstorms. In addition, landscape design and water conservation could be integrated by directing urban flood water and purifying surface runoff.
However, rainfall in Taiwan can be very heavy, and any individual facility will have only a limited effect. Only by joining all facilities into a networked system that can deal with the accumulation and use of water in a larger area, will it be possible to turn often damaging water into a resource.
At the individual locations, existing open spaces, unused land and open spaces in direct connection to buildings should be redesigned into key locations for regulating, stopping and accumulating flood water, and each location should also collect local rainwater. In new land developments, overall consideration should be given to the use of and recycling of water resources by minimizing excavation in order to maximize seep-through area in combination with a system for collecting rainwater for recycling.
As the frequency of natural disasters increases and their impact becomes increasingly severe, it seems that major disasters are becoming a part of life, and water plays an important role.
As a result of the increasingly large expropriations and redesign of land in recent years, large areas of agricultural and forest land have been turned into construction sites, which means that land use is going through planned transformation on a large scale.
If we continue to rely on traditional methods, the risk will remain unchanged. We must change our attitude toward natural disasters, and if we want to address the cause of the problem, attitudes and policies need to change because water will always find ways to get through.
Using appropriate space planning and design is the way to go if we are to be able to coexist with water. Whether or not that will be possible will of course depend on the government’s vision and resolve.
Wang Jieh-jiuh is an associate professor of architecture at Ming Chuan University.
Translated by Perry Svensson
Recently, China launched another diplomatic offensive against Taiwan, improperly linking its “one China principle” with UN General Assembly Resolution 2758 to constrain Taiwan’s diplomatic space. After Taiwan’s presidential election on Jan. 13, China persuaded Nauru to sever diplomatic ties with Taiwan. Nauru cited Resolution 2758 in its declaration of the diplomatic break. Subsequently, during the WHO Executive Board meeting that month, Beijing rallied countries including Venezuela, Zimbabwe, Belarus, Egypt, Nicaragua, Sri Lanka, Laos, Russia, Syria and Pakistan to reiterate the “one China principle” in their statements, and assert that “Resolution 2758 has settled the status of Taiwan” to hinder Taiwan’s
Singaporean Prime Minister Lee Hsien Loong’s (李顯龍) decision to step down after 19 years and hand power to his deputy, Lawrence Wong (黃循財), on May 15 was expected — though, perhaps, not so soon. Most political analysts had been eyeing an end-of-year handover, to ensure more time for Wong to study and shadow the role, ahead of general elections that must be called by November next year. Wong — who is currently both deputy prime minister and minister of finance — would need a combination of fresh ideas, wisdom and experience as he writes the nation’s next chapter. The world that
The past few months have seen tremendous strides in India’s journey to develop a vibrant semiconductor and electronics ecosystem. The nation’s established prowess in information technology (IT) has earned it much-needed revenue and prestige across the globe. Now, through the convergence of engineering talent, supportive government policies, an expanding market and technologically adaptive entrepreneurship, India is striving to become part of global electronics and semiconductor supply chains. Indian Prime Minister Narendra Modi’s Vision of “Make in India” and “Design in India” has been the guiding force behind the government’s incentive schemes that span skilling, design, fabrication, assembly, testing and packaging, and
Can US dialogue and cooperation with the communist dictatorship in Beijing help avert a Taiwan Strait crisis? Or is US President Joe Biden playing into Chinese President Xi Jinping’s (習近平) hands? With America preoccupied with the wars in Europe and the Middle East, Biden is seeking better relations with Xi’s regime. The goal is to responsibly manage US-China competition and prevent unintended conflict, thereby hoping to create greater space for the two countries to work together in areas where their interests align. The existing wars have already stretched US military resources thin, and the last thing Biden wants is yet another war.