生活衛生
Online ISSN : 1883-6631
Print ISSN : 0582-4176
ISSN-L : 0582-4176
49 巻 , 4 号
選択された号の論文の3件中1~3を表示しています
解説
  • 今井 長兵衛
    2005 年 49 巻 4 号 p. 199-214
    発行日: 2005年
    公開日: 2005/08/08
    ジャーナル フリー
    An alien species is defined as a species, subspecies or lower taxon occurring in a country or region outside that of its historically known range due to introduction by humans. Introduction can be either direct, as in the case of socio-economically valuable species that are imported, or indirect, as in the case of those that arrive accidentally together with imported goods and human immigrants. The term “invasive species” is given to alien species that, through predation, competitive substitution and gene contamination, adversely affect native biodiversity, the environment, agriculture, forestry, fisheries and human safety in the countries or regions to which they have newly immigrated. In Japan, the Invasive Alien Species Act was promulgated as of June 2, 2004, and went into force as of June 1, 2005. This article describes, first, factors affecting immigration, settlement and expansion of alien species, second, the present situation of recognized alien species in Japan and, third, countermeasures to be taken against alien species including invasive ones.
  • 山本 攻
    2005 年 49 巻 4 号 p. 215-219
    発行日: 2005年
    公開日: 2005/08/08
    ジャーナル フリー
    Illegal dumping of solid waste has become one the most urgent issues faced in the administration of solid waste management. In this paper, changes in the number of arrests for violation of environmental laws since 1972 and the increasing rate of cases of illegal dumping are shown. The national government has taken various measures to curb illegal dumping, especially of industrial solid waste. The changes in the Waste Management and Public Cleansing Law concerning the measures for illegal dumping are reviewed.
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