文献类型： 外文期刊

第一作者： Li, BB

作者： Li, BB;Yu, CS;Zhang, ML;Zhang, SL

作者机构：

关键词： cultivated land change;dynamic graph and point comparing;changing rate per year

期刊名称：OPTICAL REMOTE SENSING FOR INDUSTRY AND ENVIRONMENTAL MONITORING

ISSN： 0277-786X

年卷期： 1998 年 3504 卷

页码：

收录情况： SCI

摘要： It is a critical important task to find out cultivated land change quickly, as the sharply reducing of cultivated land use because of the rapid development of industry and agriculture in Yangtze Delta region. It is satisfied well to investigate land use change with the technology of remote sensing. According to the method of view distinguishing of "dynamic graph and point comparing", cultivated land changes from 1992 to 1995 were investigated for every county in the region, using 1/100000 "TM" imagine data as an information source. The results showed that the cultivated land was decreased sharply as much as 61000 hectares for the region in three years. The mean changing rate was 10. 8 parts per thousand per year. And in the three cities, Suzhou, Wuxi and Changzhou, the rates were as high as 15.6 parts per thousand/year. Among the decreased cultivated land,construction land was occupied as the part of 51. 8-62 parts per thousand. In order to protect limited land resources, a dynamic measuring system of land use must be organized. According to the "TM" imagine data, using the method of remote sensing measurement, a macro-dynamic change of cultivated land in the level of county can be measured rapidly. The precision can be as high as 90-95%. The fixed number of measuring years may be determined according to the dynamic change of cultivated land in the region. The measuring contents of dynamic land use may be expanded to classifying of agriculture, breeding, industry and fishing.

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