Helena Joyce
Japan has been actively tackling the issue of marine pollution, which has been a significant concern for the country. The annual number of reported marine pollution incidents in Japan's coastal areas ranges from 700 to 900, with oil-related incidents accounting for half of these cases. In recent years, there has been an increase in ocean garbage, particularly plastic waste, which has threatened the country's marine ecosystems and scenic beauty. Japan has responded by implementing various measures, including adopting the Basic Law for the Environment in 1993 and restructuring its administrative system to effectively enforce plastic pollution regulations. Additionally, local volunteer organizations have been conducting beach cleanups, and the Osaka Blue Ocean Vision aims to reduce marine plastic litter to zero by 2050. However, Japan's dense population and limited resources present challenges in managing waste and pollution, and there is criticism that Japan has contributed to the problem by shipping plastic waste to other countries.
| Characteristics | Values |
|---|---|
| Number of marine pollution cases in 2023 | 259 |
| Cause of marine pollution cases | Oil |
| Region with the most pollution cases | Seto Inland Sea |
| Most common waste items collected from coasts and ocean in 2022 | Land pollution |
| Volume of plastic waste | 8 million tons since 2000 |
| Percentage of plastic waste shipped abroad | 20% |
| Number of marine pollution incidents in coastal areas | 700-900 |
| Number of oil-related incidents in 1996 | 370 |
| Number of oil spill incidents from vessels in 1996 | 299 |
| Number of intentional oil spill incidents in 1996 | 86 |
| Number of incidents caused by careless handling in 1996 | 91 |
| Number of incidents caused by land-based sources in 1996 | 179 |
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What You'll Learn
Japan's plastic waste problem
Japan is one of the world's top consumers of plastic, with the second-highest per capita plastic waste emissions. The country's rate of pollution has improved since the 1950s and 1960s, but it still faces significant environmental challenges due to increasing levels of pollution. Japan's swift industrialization post-World War II led to severe environmental degradation, and the country has since been working to balance industrial activities with innovative environmental policies.
Japan has been actively addressing its plastic waste problem through various measures. The country has introduced laws and plans related to plastic pollution, improved its administrative system, and promoted recycling. For instance, Japan adopted the Basic Law for the Environment in 1993, which laid the foundation for environmental protection. Subsequently, in 2000, the Fundamental Law for Establishing a Sound Material-Cycle Society was enacted to strengthen the framework for plastic pollution governance. Japan has also issued comprehensive laws, such as the Waste Management and Public Cleaning Law, and special laws regulating specific plastic products.
Despite these efforts, Japan's plastic pollution remains severe. The country's annual volume of plastic waste has exceeded eight million tons since 2000, with only 21% of its plastic recycled. The majority of the waste is incinerated, but mismanagement and rain events wash plastic into the ocean. Japan's coasts, known for their biodiversity, also have a high concentration of microplastics, posing a threat to marine life.
The Japanese government has acknowledged the issue and agreed to the "Osaka Blue Ocean Vision," aiming to reduce marine plastic litter to zero by 2050. Local volunteer organizations have also been actively conducting beach cleanups, such as at Hakui, where nearly four tons of garbage were collected in 2019. Japan has further formulated a National Action Plan for Marine Plastic Litter to curb the indiscriminate disposal of plastic waste and enhance innovation in substitute materials.
Additionally, Japan has been shipping a portion of its plastic waste abroad. Until 2017, this waste was sent to China, but after China banned the practice, it was redirected to countries like Indonesia and Vietnam. This has raised concerns about the proper disposal of waste, as the amount of oceanic plastic from Southeast Asia is significant.
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Marine biodiversity loss
Japan is surrounded by the sea, and its marine ecosystem is vulnerable to global climate change and human impacts on the ocean. Japan has a rich marine biodiversity due to its geographical position along the Eurasian coast and its span of latitude. The country's 30,000+ km long coastline extends from subarctic to subtropical conditions, with a complex underwater topography that includes bays providing access to both shallow and deep-water ecosystems. The major ocean currents flowing along the Japanese islands, including the powerful Kuroshio-Oyashio current system, support biodiversity in the area, making it one of the most productive and diverse regions globally for both cold and warm-water marine life. This biodiversity has been an asset for Japan's fishing industry and has also created excellent conditions for activities like scuba diving.
However, Japan's marine biodiversity is under threat from various human activities. Japan has a high consumption of plastic, and its annual volume of plastic waste has exceeded eight million tons since 2000, with plastic consumption per capita second only to the US. This plastic waste, including microplastics, has been polluting Japanese coasts and oceans, posing a threat to marine life. In response, Japan has implemented various measures, such as improving its administrative system, restructuring its governance, and formulating a National Action Plan for Marine Plastic Litter to curb plastic waste disposal into the oceans. Additionally, local volunteer organizations have been actively conducting beach cleanups and raising awareness about the issue.
Another factor contributing to marine biodiversity loss is Japan's involvement in commercial whaling and the auctioning of endangered animals. Conservationists fear that the resumption of commercial whaling could decimate localized whale populations, and Japan's actions send a dangerous message to other nations. Japan argues that whale populations have recovered sufficiently since being decimated in the early 20th century and that whaling is a deeply rooted tradition in its culture. While whale populations have indeed recovered to healthy numbers, they remain under constant threat from human-driven pressures such as climate change and noise pollution.
The impact of these activities on marine biodiversity is significant. Studies have shown that microplastics can alter the physiology and survival of marine organisms and even pose a health threat to humans. Additionally, the rich marine ecosystems in Japanese waters are expected to be affected by global climate change and other human impacts. While Japan has taken some steps to address these issues, such as participating in international negotiations and implementing pollution management strategies, there is a perception that more urgent and comprehensive action is needed.
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Oil spills
Japan has experienced numerous oil spills, with 82 oil spills recorded over a 10-year period from 2011 to 2020. This equates to approximately 8 cases per year, with a slight increase in recent years (from 5 cases in 2017 to 8 cases in 2018, and 12 cases in 2019). While most of these spills are likely small in scale, they can have significant environmental and economic impacts, requiring extensive cleanup operations and generating large claims for damage to mariculture.
One notable incident is the Wakashio oil spill in Mauritius in 2020, which had severe consequences. The MV Wakashio, a Japanese vessel, ran aground and caused a major oil spill, affecting the marine life and natural environment of Mauritius. This incident brought attention to Japan's foreign policy and aid strategies, as well as the priorities of the nation in dealing with such disasters.
To prevent and manage oil spills, Japan has implemented several measures. The country is divided into 11 Coast Guard regions with 66 Coast Guard Offices and 51 Coast Guard Stations. Contingency plans have been established for the three most at-risk sea areas: Tokyo Bay, Ise Bay, and Seto Inland Sea. The Maritime Disaster Prevention Centre (MDPC) plays a crucial role in responding to oil spills, with equipment bases and agreements with private clean-up contractors in various ports. Additionally, facilities receiving oil and tankers using Japanese ports are required by law to maintain stocks of equipment and materials for spill response.
The Petroleum Association of Japan (PAJ) also contributes to spill preparedness by maintaining stockpiles of containerised equipment, including boom, skimmers, and temporary storage, at strategic locations along the coast. These measures aim to minimise the environmental impact of oil spills and ensure a swift and effective response.
Overall, while Japan has experienced a significant number of oil spills, the country has also taken proactive steps to prevent and manage these incidents, demonstrating a commitment to environmental protection and spill mitigation.
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Industrial waste
Japan's rate of pollution has improved significantly since the 1950s and 1960s, but it still faces substantial environmental challenges. Post-World War II, Japan's rapid industrialisation led to severe environmental degradation, including incidents like the Minamata disease crisis in the 1960s. These incidents spurred some of the world's first strict environmental regulations, significantly reducing pollutants and greenhouse gas emissions. For example, sulphur dioxide emissions dropped dramatically from over 1,200 kilotonnes in 1960 to about 40 kilotonnes by the late 1990s.
Today, Japan is taking action to address its plastic waste problem, which affects both its oceans and rivers. As one of the largest consumers of plastic, with an annual plastic waste production of 8 million tonnes, Japan is contributing to the pollution of marine ecosystems. The country's plastic waste is not only harmful to the environment but also to marine life, with microplastics entering the food chain and contaminating fish stocks. Japan has been working to address this issue through initiatives such as the "Osaka Blue Ocean Vision," which aims to reduce marine plastic litter to zero by 2050, and the "National Action Plan for Marine Plastic Litter," which includes indicators for monitoring progress in waste management and recycling.
Additionally, Japan has implemented policies to promote the recycling of plastic resources and encourage private sector companies to reduce and sustainably manage their plastic waste. The government has also tightened regulations around industrial emissions and promoted the harmonisation of methodologies and data sharing on ocean surface microplastics to inform science-based policymaking.
However, Japan's reliance on incineration for waste disposal contributes to domestic air pollution and greenhouse gas emissions. The country's lack of space for landfills and continued dependence on fossil fuels pose additional environmental challenges. To address these issues, Japan needs to transition to sustainably biodegradable or reusable products and shift towards domestic renewable energy sources.
Furthermore, Japan has faced scrutiny for its decision to release treated radioactive water from the Fukushima Daiichi nuclear power plant into the Pacific Ocean. While the Japanese government and some experts argue that the discharge will have a negligible impact on human health and the environment, other nations and scientists have expressed concern about the potential risks and the message it sends regarding nuclear waste disposal.
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Air pollution
Industrial activities and factories contribute to air pollution by emitting sulphur oxides (SOX) and nitrogen oxides (NOx). These pollutants are regulated by the Air Pollution Control Law, which mandates the installation of dust collectors and smoke exhausts to mitigate their release into the atmosphere. However, further reductions are needed, and Japan is pursuing additional measures such as desulphurisation and flue gas denitrification technologies.
Vehicle emissions also play a significant role in air pollution in Japan. The increase in the number of cars and traffic congestion in big cities exacerbates this problem. The government has introduced tighter regulations on automobile exhaust gases, but the achievement of environmental standards remains unsatisfactory.
Additionally, Japan's reliance on fossil fuels for energy production contributes to air pollution and greenhouse gas emissions. A transition to renewable energy sources is necessary to address this issue domestically and reduce international pollution.
While Japan has made progress in improving air quality, with the US AQI reading of 47 in 2021 classified as "Good" by the World Health Organization (WHO), major cities like Tokyo continue to experience high levels of fine particulate matter (PM2.5), sulphur oxide, and nitrogen oxide. In 2023, Tokyo's average PM2.5 levels were 1.9 times the WHO's safety threshold.
To summarize, Japan is actively addressing air pollution through technological advancements, regulatory measures, and collaboration between the government and private sectors. However, more comprehensive solutions, such as a green energy transition and reduced energy consumption during production, are needed to combat the ongoing air pollution challenges and improve overall air quality in the country.
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Frequently asked questions
Yes, Japan is contributing to ocean pollution. The country has been facing coastal water pollution caused by petroleum hydrocarbons, pesticides, and the integrated circuit industry.
Japan has been actively participating in international environmental governance and has implemented the concept of sustainable development. It has also introduced laws and plans related to plastic pollution, improved its administrative system, and promoted recycling.
The main causes of ocean pollution in Japan include oil spills, the discharge of plastic litter and microplastics, and the mismanagement of urban waste.
Ocean pollution has had a significant impact on Japan's marine life and human health. It has led to outbreaks of mercury and cadmium poisoning in humans and large fish kills. It has also contributed to the development of tumors in fish and other aquatic organisms.
