抄録
Firstly, the structure, regulation, balance and metabolism of Japanese subalpine coniferous forest and Britisch temperate deciduous forest ecosystems, both being the study areas of the International Biological Program (IBP), were elucidated. Secondly, the present state of the destruction of ecosystems caused by human impact was examined in the artificial forest, artificial grassland, cultivated land, rural, urban and industrial areas, marine, coastal and water areas of Japan. And thirdly, regeneration of destructed ecosystem through the course of ecological succession was discussed.