There are dwarfs less than 1 meter tall and giants over 2 meters tall in the human race, just as there are tiny grasses a few inches high and towering giants in the plant kingdom. In China, some of the tallest tree species include the red pine in the northeastern primeval forests, which can reach 50 meters in height and is hailed as the "king of timber"; the money pine in Xitianmu Mountain, Zhejiang Province, locally known as the "sky-piercing tree", with the tallest specimen reaching 56 meters; the Taiwan fir in the primeval forests of Taiwan, with the tallest reaching 60 meters; and the wishing tree in Xishuangbanna, Yunnan Province, which can reach up to 80 meters in height. This species, discovered by Chinese botanists in 1975 and belonging to the Dipterocarpaceae family, is extremely rare and has now been listed as a first-level protected plant in China.
However, these are not the tallest trees in the plant world. It is now known that the tallest tree in the world is a North American redwood, reaching a height of about 115 meters and located in the Redwood National Park in California, USA. Second is the Douglas fir in Olympic National Park, Washington State, USA, with a height of 99.4 meters. Third is the giant sequoia in a U.S. national park, with a height of 94.8 meters. Fourth is a king gum tree in Australia, with a height of 92 meters.
How tall can trees grow? This is a question of great interest to people. Many people believe that as long as there are good natural conditions and sufficient growth time, and there are no unexpected natural disasters or human disasters, the height of trees can reach 200 meters, 300 meters, or even higher. However, scientists do not agree with this view, because as trees continue to grow taller, water transport becomes increasingly difficult. For example, a 100-meter-tall tree has an incalculable number of capillary tubes used to transport water. According to estimates, such a large tree needs to transport about 150 kilograms of water upward every day, and it takes about 24 days to transport a single drop of water from the roots to the leaves at the top of the tree! It is precisely because water transport is necessary that limits the indefinite growth of trees. Some scientists believe that 120 to 130 meters is the limit of tree growth, beyond which water cannot be transported to the treetops.