城市绿地的航空遥感分析

Analysis of Urban Green Space Using Airphoto

城市的绿化覆盖数据是评价城市环境质量的重要指标,而绿地分布图是编制绿地规划的基础资料。本文利用航空摄影的像片进行绿地判读,结果表明嘉兴市城区陆地面积为14.220km^2,绿化覆盖面积为1.496km^2,绿化覆盖率为10.52％.它表明嘉兴市城区在面积扩大的同时,绿化的面积也同步增长。本文还就判读绿地的可能性、增强绿地影像的方法、绿地量测技术和精度等进行分析,并讨论了扩大绿地建设的途径。

The green cover percentage of a city is an important numeral for evaluating the environmental quality of the city. The map of green space is a fundamental material for planning green area. The data which were obtained by airphotos taken in the end of 1987 showed that the green area of Jiaxing urban district was increased with the enlargement of the urban district. The total area of the urban district was 14.220 km2, in which green area was 1.496 km2; green cover percentage was 10.52 per cent. The possibility of interpreting green space, the measurces of enhancing green space image, the technique and accuracy of measuring green space were analyzed, and the ways of extending green space were discussed.