In the Edo period, spanning approximately 260 years, Japan's establishment of a sustainable society has been recognized and studied globally in recent years. When contemplating the future of humanity, adopting a sustainable way of life is indispensable. This way of thinking has yielded significant insights for addressing contemporary challenges, drawn from Japan's Edo period. During this era, a lifestyle centered on coexistence with the Earth, efficient resource utilization, and environmental conservation was deeply ingrained.
Due to Japan's policy of seclusion during the Edo period, external resource supply was restricted. The wisdom born from this situation led to the culture of reuse and recycling. Everyday items and materials were treated with care, and rather than discarding worn-out articles, repair and reuse were prevalent. Commodities and materials experienced multiple lifecycles, with repair and reuse integrated into daily life. Professional roles during this time centered around repair and reuse, breathing new life into items that would have otherwise been discarded.
In the Edo period, many everyday items were manufactured using combustible materials derived from plants such as wood, bamboo, straw, and cotton. Clothing like kimonos were repeatedly repaired and fully utilized. Additionally, the presence of "haisuya" (ash dealers), who transformed used items into ash for reuse as fertilizers and materials, is noteworthy. Instead of disposing of ashes, households and businesses collected ash at public baths and sold it to local ash dealers. Ash derived from straw and cotton contained abundant potassium and was used not only as a fertilizer additive but also in ceramics, dyes, and alcohol production, creating a profitable business for proactive ash dealers. This practice facilitated efficient resource utilization, establishing a sustainable circular society.
Preserving and utilizing "satoyama" areas (semi-natural rural landscapes) was another crucial theme. Governed by the shogunate's proclamations, these areas served as models for protecting local resources while harmonizing with local livelihoods. The conscious balance between resource utilization and conservation in these areas holds valuable implications for contemporary environmental issues. People didn't merely sustain themselves and society, but they also improved the environment without causing harm. They maintained cleanliness in rivers and surrounding seas, enriched soil fertility, and expanded forest coverage, contributing to the environment. People in this era engaged in a cycle of "recycle," "reuse," and once again "recycle." They enthusiastically recycled nearly every item and frequently repaired items until they could no longer be used. Unlike many modern tools, repairing was straightforward due to the simple structures. Moreover, due to limitations in fiber production, especially with cotton, and the high cost and time investment, many garments were recycled.
Edo-era Japanese placed great importance on innovative thinking and a spirit of coexistence with the limited resources of their environment. Although living in the same circumstances is not possible due to the difference in eras, these lessons can be effectively applied as means to combat modern issues of resource depletion and environmental change. By nurturing cultures of reuse and recycling, and practicing sustainable resource utilization and conservation at a local level, we can build a symbiotic relationship with our planet and pass on a beautiful environment to future generations.
<参考>
・『大江戸えころじー事情』 石川英輔著
・『逝きし世の面影』 渡辺 京二著
・Metropolis Japan https://metropolisjapan.com/edo-period-sustainability/#:~:text=Throughout%20the%20Edo%20Period%2C%20Japan,items%20experiencing%20multiple%20life%20cycles.
・Japan Focus: The Asia-Pacific Journal https://apjjf.org/-Eiichiro-Ochiai/2346/article.html
・California Center for Land Recycling https://www.cclr.org/expert-advice/sustainability-and-resilience-whats-17th-century-japan-got-to-do-with-it