Analysis and Evaluation on the Upgrade of Land Use/Cover Change in Large Scale Irrigation Project from the Long Term View

在2001财政年度，我们以中国长江上游四川平原的成都周边地区、都江堰灌区、台湾南部的嘉南灌区、泰国中部平原的朗实灌区为海外调查区域，开展了实地调查。在日本，我们对冈山县小岛湾潮垦工程、德岛吉野河河口区、爱知县丰川灌溉工程等大型灌区进行了实地调查。从去年6月开始，美国地质调查局开始在订购后几天内提供覆盖地球所有地区的Landsat 7-ETM+图像。这使我们能够快速获得世界上任何地方的卫星图像。同时，GPS数据的线性采集也成为可能。作为分析方法，我们引进并正在使用改版的高性能卫星图像分析软件（ER…More DAS Imagine, ENVI+IDL）。全国高校利用网络空间合作体系的建立也在不断推进，在利用网络开展科研工作方面取得了一定成效。特别是，大量研究人员以“浮动许可”为关键词使用昂贵、高性能的软件是有前景的，研究生的访问次数从1月底到2月初有所增加。我们还分析了最近IKONOS提供的德岛县吉野河口地区、爱知县津美半岛地区、冈山县小岛湾地区等地区的超细卫星图像数据。利用美国密歇根州立大学TRFIC提供的热带森林地区的Landsat TM图像，对泰国东北部的灌溉项目进行了分析。与鸟取大学干旱区研究中心合作，对伊朗半干旱区大规模灌区进行了分析。并计划在一本书中总结荷兰这个土地复垦先进国家的Zuyderzee项目的历史发展。少

In the fiscal year of 2001, we carried out field surveys on the vicinity of Cheng_Du city and Du_Jiang_Yan Irrigation project in the Sichuan plain upstream of YangTze River, China, Chia_NanIrrigation Project in south Taiwan and Rangsit Irrigation Project, Central Chaphraya Plain, Thailand, as overseas survey areas. In Japan, we carried out on-the-spot surveys in large-scale irrigation areas such as Kojima Bay Tide Land Reclamation project of Okayama prefecture, River moutharea of Yoshino River in Tokushima, and Toyokawa Irrigation Project (Aichi Prefecture). From June, last year, US Geological Survey Bureau started to offer Landsat 7-ETM+ images covering all areas on the earth in a few days from ordering. This has allowed us to get Lansat images of any place in the world quickly. At the same time, linear acquisition of GPS data also became possible. As analytical method, we have introduced and are utilizing the revised versions of high-performance satellite image analysis softwares (ER … More DAS Imagine, ENVI+IDL). Establishment of the nation-wide inter-university cooperative system by the use of cyberspace is also progressing and we have achieved a certain result concerning effectuation of researches through internet. In particular, utilization of expensive and high-performance softwares by a large number of researchers with the key word of "floating license" was found to be prospective and the number of accesses by postgraduate students increased from the end of January to the beginning of February.We also analyzed recently the data of ultrafine satellite images supplied by IKONOS in the areas of Yoshino River mouth area in Tokushima Prefecture, Atsumi Peninsula in Aichi Prefecture, Kojima Bay area of Okayama Prefecture, etc.. With Landsat TM images in tropical forest area supplied by TRFIC, Michigan State University, we progressed the analysis of the irrigation project in the northeast Thailand. The large-scale irrigation district in the semi-arid area of Iran was analyzed as a cooperative study with Arid Land Research Center of Tottori University. It is also planned to summarize the historicaldevelopment of Zuyderzee Project in the Netherlands, the advance nation inrelation to land reclamation, in one book. Less