Biodiversity
Basic Approach
— Initiatives with Consideration for Ecosystems —
Internationally, the Kunming-Montreal Global Biodiversity Framework (GBF) calls for the realization of a “Nature Positive” world by 2030, aiming to halt and reverse nature loss. This is not only a societal challenge closely interconnected with climate change, but also a critical issue that affects the sustainability of corporate activities. At DENSO, we recognize this challenge as an important perspective for enhancing the quality of our management and business operations. We are working to better understand how our business both depends on and impacts nature, and based on these findings, we will continue to implement practical and actionable improvements. Through ongoing dialogue and verification, we will promote business operations that give due consideration to ecosystems and biodiversity.
Specific Initiatives
Protection of Region-Specific Ecosystems and Rare Species Within and Around Business Sites
At plants in Japan and overseas, we carry out activities tailored to the characteristics of each region, including monitoring surveys and the establishment of bird protection areas, in order to conserve local biodiversity.
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Biotope [DENSO Corp (Japan)]
When a dwarf topmouth minnow (ushimotsugo), an endangered species of freshwater fish, was discovered in 1998, the Zenmyo Plant took the opportunity to build a biotope (approximately 3,000m2) and is now creating a mountain lowland ecosystem for spot-billed ducks. In addition, efforts are being made to breed the Japanese rice fish and bring back the local takanata butterfly at the Takatana Plant’s biotope (1,500m2 area), which was built with the cooperation of local elementary school students in 2004.
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Protecting Native Habitats of “Japanese scabious” [DENSO Iwate]
DENSO Iwate also supports the conservation of rare satoyama plant species by participating in activities to protect the native habitats of “Japanese scabious,” which is designated as an A-rank endangered species in the Iwate Prefecture Red Data Book.
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Eco Garden [DMUK (United Kingdom)]
The Eco Garden and woodland walking trail provide a relaxing space where visitors can experience biodiversity despite being located within an industrial area. The facilities are open to employees, local residents, and schools, offering opportunities to engage with and learn about nature and the environment.
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Wildflower Garden [DMMI (U.S.)]
The garden has been designated as a “Monarch Waystation” in recognition of its role as a stopover habitat within the ecological network that supports the migration of the native North American “monarch butterfly,” which travels thousands of kilometers over long distances.
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Biotope [DNIN (India)]
Since the Eco Park opened in 2004, senior management has organized environmental events and Family Day activities each year, planting fruit trees and medicinal plants together with employees and their families. The garden also produces mulch as part of its various eco-friendly initiatives.
| Worksite | Animal & plant species | Category |
|---|---|---|
| Zenmyo Plant (Nishio City, Aichi Prefecture) |
Dwarf topmouth minnow (Ushimotsugo) |
Critically Endangered (CR) |
| Daian Plant (Inabe City, Mie Prefecture) |
Oily bitterling |
Near Threatened (NT) |
| DENSO Iwate (Isawa-gun, Iwate Prefecture) |
Japanese scabious |
Red Data Book Category A |
| Abashiri Test Center (Abashiri City, Hokkaido) |
Black woodpecker |
Near Threatened (NT), |
|
Woodland peony |
Vulnerable II (VU) |
|
|
Ezo salamander |
Data Deficient (DD) |
|
|
White-tailed eagle |
Vulnerable II (VU), |
[Notes]
CR: Critically Endangered — Species facing an extremely high risk of extinction in the wild
VU: Vulnerable — Species facing an increasing risk of extinction
NT: Near Threatened — Species with vulnerable survival conditions
DD: Data Deficient — Species for which there is insufficient information to assess their status
Promoting Environmental Contribution Activities Across the DENSO Group
Our worksites around the world promote environmental contribution activities such as tree-planting initiatives and community beautification efforts.
Conservation of Water Bodies
We promote biodiversity conservation activities in collaboration with local communities and with the participation of employees in areas surrounding our business sites and in representative water bodies across the countries and regions where we operate.
For example, since 2007, DENSO Toyohashi Plant has worked in partnership with the NPO “Omotehama Network” to protect the coastal environment of the Omotehama Beach shoreline, which serves as a nesting site for the endangered loggerhead sea turtle.
In addition, our business sites around the world are engaged in environmental conservation and cleanup activities for aquatic habitats that support diverse forms of wildlife.
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Loggerhead Sea Turtle Conservation Activity [DENSO Toyohashi Plant (Japan)]
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River Cleanup Activity for Biodiversity Conservation [DNKR (South Korea)]
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Coastal Cleanup Activity to Protect Biodiversity from Environmental Pollution [DNTW (Taiwan)]
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Water Body Conservation Activities for Manila Bay and the Pasig River [DTPH (Philippines)]
Forest and Satoyama Conservation
Forest conservation in Japan serves as a critical foundation for maintaining and restoring biodiversity and represents a core initiative that supports both the ecological value of Japan as a biodiversity hotspot and the responsibility to protect it. At DENSO, conservation activities are continuously carried out in collaboration with local communities and with the participation of many employees.
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“Tendo Wonder Forest” Activity [DENSO FA Yamagata Co., Ltd.]
DENSO FA Yamagata participates in the “Tendo Wonder Forest” activities in Tendo City, where the company is located, and carries out maintenance activities for designated forest areas within the city.
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“Ihatov Hoshifuru Mori” Activity [DENSO Iwate Corporation]
Employees and their families volunteer twice a year to help maintain the forests of Senganishi Forest Park, which serves as a water source for the company and contributes to regional CO2 absorption.
“Water Source Forest Conservation Project” [DENSO Unity Service Corporation]
Since 2005, DENSO Unity Service has promoted the “Water Source Forest Conservation Project” in the Asuke area of Toyota City, known as a key water source region for Aichi Prefecture. In addition to forest thinning and reforestation site maintenance, the project also offers nature observation hikes and hands-on craft activities that families can enjoy together. Through these initiatives, the company continues its efforts to conserve forests and promotes opportunities for people to connect with nature.
“Green Project” — Forests Surrounding the DENSO Abashiri Test Course
Local residents, employees and their families, and nonprofit organizations work together to carry out ongoing activities such as tree pruning, forest thinning, and nature-based environmental learning programs. Including other biodiversity-focused initiatives, the Green Project has been held a total of 65 times as of March 2026, with cumulative participation reaching 9,471 volunteers, including local community members as well as employees and family members from DENSO and its group companies in Japan.
Restoration of Green Spaces Through Tree Planting and Revegetation
At DENSO, efforts to restore green spaces are being promoted globally not only for forest conservation but also for the protection of biodiversity. Our employees participate in tree-planting activities in many countries, including Germany, the United Kingdom, and Italy in Europe; Brazil in South America; and Singapore, Thailand, Malaysia, the Philippines, India, and South Korea in Asia. For example, DNPH in the Philippines participated in the “Mount Makiling Tree-Planting” project, where tree-planting activities were carried out while monitoring tree growth progress through project documentation and setting growth milestones. In Thailand and Malaysia, many employees also participated in mangrove tree-planting activities aimed at protecting coastal mangrove forests.
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Mangrove Tree Planting [DNMY (Malaysia)]
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Mangrove Tree-Planting Activity in Thailand [SDM & SKD (Thailand)]
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The Royal Tree-Planting Activity [SDM & SKD (Thailand)]
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Mount Makiling Tree Planting [DNPH (Philippines)]
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“Plant A Tree” Project [DIAS (Singapore)]
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Tree-Planting Activity [DIIN (India)]
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Tree-Planting Activity [DNIN (India)]
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Tree-Planting Activity [DMBR (Brazil)]
“Vertical Garden” Created by Recycling Plastic Bottles [DNIN (India)]
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Tree-Planting Activity in the World Forest [DNDE (Germany)
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Tree Planting at the DENSO Marston Nature Reserve [DENSO Marston (U.K.)]
All Toyota Biodiversity Conservation Activities
We participate in the “Green Wave Project,” an initiative through which Toyota Group companies work together to promote biodiversity conservation activities. Through this initiative, we are expanding efforts such as creating forests within our manufacturing facilities and conserving habitats for wildlife, extending these activities beyond Toyota Group companies to include local communities, government agencies, and other stakeholders.
Support for the Keidanren Declaration on Biodiversity
We have endorsed the “Keidanren Initiative for Biodiversity Conservation.” To help realize a sustainable society, we have established the “DENSO Eco Vision” as our action plan, defining both the goals to be achieved and the specific actions required. To promote harmony between people and nature, we are advancing initiatives such as the “protection of region-specific ecosystems and endangered species” within our business sites, as well as the “DENSO Green Project,” a greening initiative that emphasizes natural landscaping techniques using native plant species. These activities are carried out collaboratively by employees, their families, NPOs, and local communities. The Keidanren Initiative for Biodiversity Conservation brings together companies and organizations that support the principles of the “Keidanren Declaration on Biodiversity (Revised Edition)” in pursuit of a sustainable society. Information on participating organizations’ future policies and specific initiatives has been published on the Keidanren web platform since September 2021.
Participation in the “30by30 Alliance for Biodiversity”
We support the “30by30” initiative and participate in the “30by30 Alliance for Biodiversity.” The “30by30” initiative is a global target aimed at halting and reversing biodiversity loss (Nature Positive) by effectively conserving more than 30% of land and marine areas as healthy ecosystems by 2030.
Since 2006, we have actively promoted biodiversity conservation initiatives, including greening activities not only within our business sites but also in surrounding communities and areas where automobiles are used, such as along highways. We have also engaged in environmental education programs designed to raise environmental awareness among employees. By leveraging the extensive experience and knowledge we have cultivated through our long-standing biodiversity conservation efforts, we will continue contributing to the development of a sustainable society through participation in the 30by30 Alliance.
TOPIC: DENSO Abashiri Test Center Certified and Registered as a Ministry of the Environment “Nature Coexistence Site” and in an International Database
The DENSO Abashiri Test Center was recognized for its efforts to conserve rare wildlife species, including the woodland peony (a plant species) and the black woodpecker (a bird species), both listed on the Ministry of the Environment Red List in Japan. As a result, the site was certified and registered as a “Nature Coexistence Site” by Japan’s Ministry of the Environment and was also registered in the international OECM database (August 2025).
In addition, the Nature Coexistence Site “DENSO Abashiri Test Center” obtained certification under a new law designed to further promote private-sector and other initiatives aimed at achieving nature positivity (March 2026).