The tendencies of recreation and tourism are changes in time or site, and green fields should be considered, including the problem of construction of golf courses, which occupy large areas of land.
(1) The estimation of the qualities and quantities of green in the environment are different depending on the location.
① The relation of the increase of CO2 to a warming up of the earth is not clear, especially concerning a possible rise in the ocean levels. But certain creatures will receive a fatal blow even if only minute changes occur. Humanbeings must be careful of actions that greatly affect nature.
② The percentage of forest area in Japan is high, but the area per capita is low. The forest land is mainly in areas where it is difficult to carry out agriculture, such as subfrigid zones which are too cold to grow crops in some summers, tropical rainy zones where it is difficult to maintain fertility due to the high temperature and humidity, and areas like Japan, which have steep slopes and erosion and fertility problems. There are many types of forests, depending on the forest zone and the condition of their establishment.
(2) The green environment has deteriorated during the last 200 years due to the activities of humankind. To adequately address the local problems of a green environment, the green campaign should be divided into two stages: local and global. The recent development of the technology of biological production is the first green revolution. The second green revolution will be the productive activity of biotechnology which will move beyond the theory of probabilities of the evolutionary process.
It should be during the consideration of these second stage that tourism and recreation are further developed.
(3) Familiarity with the types of green differs, depending on the people, location and period. Usually, Japanese enjoy, respect and are fond of green environments. They maintain the vegetation in the grounds of shrines and temples, even in cities. It is different condition from the domesticated forest surrounding some cities in Europe and North America.
(4) Golf courses in Japan, which has 12 million golfers, are situated on topography and geology which is fragile and steep, and also it is considered that there are too many of them. The construction of golf courses must be taken into account in local planning, and they must follow the restrictions imposed by social problems. They can be promoted in open areas, such as continents and waste lands but not in dangerous zones, islands, and densely populated areas.
(5) Mankind in the twenty-first century will spread out tourism and recreation by changing the environmental situation. The problems concerning green are presented such as a change of tax reduction for agriculture fields in cities to increase residential areas, although there are few parks per capita, and the same for construction of golf courses in Japan. It is important to have a broad and long-term prospective.
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