CHINA-JAPAN COMPARATIVE STUDY OF LAND USE/COVER CHANGE

1)通过政府间土地利用/覆被变化委员会(IGU-LUCC)的活动对土地利用/覆被变化方案(LUCC)作出贡献：该项目主任在1996-2004年期间担任IGU-LUCC主席，该项目不仅在研究指导方面发挥了关键作用，而且在组织出版物方面也发挥了关键作用，会议和其他委员会活动2)数字化/存档和分析日本和中国的LUCC信息库：这些是基于以下项目完成的：a)土地利用趋势调查报告和DID(人口稠密地区)统计数据(日本)b)日本和中国的农业统计数据和其他相关统计数据)日本和中国的地形图)日本和中国的实地调查报告和照片3)研究的主要趋势：a)城市化：20世纪90年代中国的城市扩张速度是20世纪60年代日本经济快速增长时的两倍。城市化对ro…的威胁更大。更多的高地、湿地、牧场和其他边际土地，而不是农田，环境保护在其中许多地区是一个日益重要的问题。b)农业土地利用的变化：自20世纪80年代后半期泡沫经济时期以来，日本将农业用地转化为城市用途的数量一直超过农业用地的创造。已经证实，地震、洪水和其他自然灾害加速了这一腐烂过程。这些情况在中国也可能发生，但有一些时间滞后。c)为了更好地了解土地利用/覆盖变化：对大片地区的详细实地观察，以及统计和地图分析支持的比较研究，显示了两国土地利用变化的重要异同和相似之处，以及它们之间的时间滞后。因此，认真研究日本，对于了解中国的现状和未来前景是非常有用的。较少

1)Contribution to LUCC (Land Use/Cover Change Programme) through IGU-LUCC (IGU Commission on Land Use/Cover Change) activities :The director of this project was the chair of IGU-LUCC during 1996-2004, and this project played a key role in IGU-LUCC not only in research guidance, but also in organizing publications, meetings and other commission activities.2)Digitizing/archiving and analyzing LUCC information bases for Japan and China :These have been done based on the following items :a)the reports of the Survey of Land Use Trend and DID (Densely Inhabited District) statistics (Japan)b)agricultural statistics and other related statistics in Japan and Chinac)topographic maps of Japan and Chinad)field survey reports and photographic for Japan and China3)Major fingings of the research :a)urbanization : The urban expansion rate in the 1990s in China was twice as large as that in Japan in the 1960s, when Japan was experiencing the rapid economic growth. Urbanization is more of a threat to ro … More ugh land, wetland, rangeland and other marginal land, than to farmland, and environmental conservation is an increasingly important issue in many of these areas.b)changes in agricultural land use : The conversion of agricultural land to urban uses has been exceeding the creation of agricultural land in Japan since the period of the bubble economy in the latter half of the 1980s. It has been confirmed that earthquakes, floods and other natural disasters have been accelerating the decaying process. These can take place in China as well, with some time-lag.c)towards better understanding in land use/cover changes : The detailed field observations of extensive areas, together with comparative studies supported by statistical and map analyses, have shown important differences and similarities of land-use changes in the two countries as well as time-lag between them. Careful studies on Japan have thus been proved to be extremely useful in understanding the current situation and the future prospect in China. Less