SPOT图象的土壤解译与制图效果研究

Studies on soil interpretation and mapping using SPOT data. Acta Agriculturae Universitiats Zhejiangenis,

用SPOT全色波段数据在杭州市郊转塘地区进行土壤解译制图试验。原图象经计算机和光学处理,用目视综合解译法进行解译。两个不同海拔区的解译正确率分别为 100％和 80％,制图详度比土壤普查图有所提高,但仅为精确的航判图的60.1％和 62.9％。试验结果表明,SPOT图象的地面分辨率是高的,几何精度也是好的,可进行1:25000的土壤制图;目视综合解译法同样也适用于SPOT图象的土壤解译;本区用于土壤解译的合适时相为夏季或初秋。然而,因SPOT图象缺少红外信息和存在价格昂贵问题,广泛应用将受到限制。

Using the SPOT HRV-2 PAN spectral band data,the soil interpretation and mapping had been done in zhuangtang district, in the suburbs of Hangzhou, southern China. The computer processed and optical magnified images, at 1 : 10 000 and 1 晻 25 000 scale, were interpretated with the Comprehensive Visual Interpretation Method ( CVIM ) . It was approved that the SPOT data can be used in soil mapping of l : 25 000 scale, and the images obtained in late spring, summer and early-autumn were more appropriate than those in winter for soil interpretation in this district. It also showed that the CVIM was an ideal method for soil interpretation. Nowadays, however, it is difficut to use the SPOT data widely because of its high price and lack of infrared information.