Final answer:
Tree harvesting is limited due to lack of awareness, cost considerations, and environmental concerns, which include the socio-economic impact and environmental degradation caused by deforestation. Sustainable practices need to be in place to ensure renewability and maintain ecological balance.
Step-by-step explanation:
Tree harvesting is considered a natural renewable resource, but there are several factors limiting its widespread practice. The reasons why more people do not harvest their trees include a variety of factors, namely lack of awareness, cost considerations, and environmental concerns. These factors encompass the broader socio-economic and environmental impact associated with tree harvesting.
In regions such as developing countries, reliance on firewood for cooking is high, leading to deforestation as trees are cut down at a rate faster than they can be replenished. Also, the environmental cost of deforestation is profound, from loss of habitat to soil erosion and climate change.
Wealthier nations have the ability to import lumber, which avoids the direct impact of deforestation but does not address the global issue. Efforts like China's massive replanting program showcase initiatives to counteract this trend. Therefore, the aspect of renewability must be balanced with sustainable practices to ensure that tree populations can recover and maintain ecological balance.