1. Maintain ecological balance: Forest is the largest terrestrial ecosystem on the earth and plays an important role in maintaining ecological balance. Forests can absorb a lot of carbon dioxide, release oxygen, purify the air, adjust the climate, protect the soil, prevent soil erosion, keep the water source clean and maintain the stability and health of the ecological environment.

2. Protect biodiversity: Forests are habitats and breeding grounds for many wild animals and plants, with rich biodiversity. Protecting and developing forest ecosystem is helpful to maintain biodiversity, prevent species extinction and promote the balance and stability of ecosystem.

3. Promote economic development: Forests provide a large number of wood, food, medicinal materials and industrial raw materials for human beings, and have made important contributions to economic development. At the same time, the forest also has ecological functions such as wind and sand fixation, soil and water conservation and water conservation, which can reduce the occurrence of natural disasters and ensure the safety of people's lives and property.

Measures to protect forest ecosystem:

1. Formulate and implement strict laws and regulations on forest protection: The government should formulate strict laws and regulations on forest protection, clearly define the protection measures for forest ecosystems, and at the same time strengthen law enforcement and severely crack down on and punish acts that destroy forest ecosystems. In addition, the destruction of forest ecosystem can be restricted or prohibited by establishing nature reserves and ecological public welfare forests.

2. Promote sustainable forest management: Sustainable forest management is one of the effective ways to protect forest ecosystems. This includes taking scientific forest management measures to promote forest regeneration and growth; Implement strict logging management and control the consumption of forest resources; Strengthen forest fire prevention to prevent fire damage to forest ecosystem.

3. Strengthening public education and awareness-raising: Through strengthening public education and awareness-raising, the public's awareness of the importance of forest ecosystems is enhanced, and the public's awareness and sense of responsibility for environmental protection are enhanced. This can be achieved through publicity activities, lectures and public service advertisements. At the same time, education can also guide people to change bad living habits and consumption behaviors and reduce the damage to forest ecosystems.