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遥感技术是近年来发展的新技术,航空遥感有各种各样的片种,一般有黑白航片、自然彩色航片、红外彩色航片和热红外彩色航片等,并有多种比例尺如1:10 000;1:18 000;1:67 000;1:20 00;1:2 500等等。我们使用大比例尺的红外彩色航片来调查城市园林植物比较容易、效果明显。首先城市中地物复杂,环境也是多变的,再者园林植物本身又有多种类型,以区别其变化,用人的肉眼观察是不容易的,而且通常应用地面的人工调查也是比较费时、费工,又不能取得同一时间、同一空间的城市园林植物的数量、质量的变化资料。使用
Remote sensing technology is a new technology developed in recent years. There are various types of aerial remote sensing. There are generally black and white aerial photographs, natural color aerial photographs, infrared color aerial photographs, and thermal infrared color aerial photographs, and there are various scales such as 1:10 000; 1:18 000; 1:67 000; 1:20 00;1:2 500 and so on. We use large-scale infrared color aerial photographs to investigate urban garden plants and it is easy and effective. First of all, there are complex features in the city and the environment is also changeable. Furthermore, there are many types of garden plants themselves to distinguish their changes. It is not easy to observe people’s eyes with the naked eye, and it is usually time-consuming and costly to apply artificial surveys on the ground. Workers cannot obtain information on changes in the quantity and quality of urban garden plants in the same space and at the same time. use