Regarding sustainability of forests, we must first determine sustainability. The concept of sustainability is not easy to define in one sentence or a few words. As quoted by Steve Nix (nd), the British Columbia Forest Department notes that sustainability can be integrated into a single system, environment, economy, society and maintain health indefinitely I have defined it. In order to realize and maintain this subtle balance, various elements of these three elements need to work together.
According to forest farmers, deforestation is a threat to forests. Forest logging is the permanent destruction of forests and forests. Forest logging is achieved by commercial logging, conversion to forestland farmland, and logging of firewood and building materials. Commercial logging refers to the harvesting of timber products to benefit from the sale of products. Illegal logging is a threat to forests. Illegal logging is wood that is not licensed for economic benefits. This approach is a threat as it hinders the planning and maintenance of forests. Forest has lost its role in urban development and construction projects. For these reasons forests are cut down, there are problems that concerns the forestry officials. When heavy equipment is used for purification of forests and land development, the soil becomes hard. When soil is pressed in real time, the soil particles will be stacked firmly. Soil compaction may also cause flooding
California's forests are facing many threats. The greatest threat is not due to the loss of forests and subsequent regeneration due to harvest, but due to the conversion to farmland and residential areas by non-forests due to serious catastrophic events such as large-scale forest fires and land use. In fact, forest resources in private and public forests are on the rise. However, the occurrence of large-scale forest fires has increased significantly. Due to high cost, low income, loss of timber product infrastructure, the economic value of forests as a source of wood products has declined and it is more difficult to maintain economic sustainability for forest property owners . According to CalFire, the production capacity of California softwood lumber has shrunk by 25% in the past few years.
Sustainable development of forests: Sustainable forest management is a dynamic and evolving concept. Its purpose is to maintain and improve the economic, social and environmental value of all kinds of forests for the benefit of present and future generations (UNFF, 2007). In the broadest sense, forest management includes the administrative, legal, technical, economic, social and environmental aspects of forest protection and use. It consists of actions to protect and maintain forest ecosystems and their functions, to groups of species that promote specific social or economic value to improve the production of goods and services, various levels of intentional It means human intervention.