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这次试验的目的是探讨利用遥感图象进行宜林地分类,和预报生产潜力的可能性。本次试验于1978年12月中旬至1979年2月在云南省腾冲县试验区进行。其方法是在试验区的各宜林地类型及部分森林类型中设置了31块样地,进行了植被、土壤等专业的综合调查,并利用新近拍摄的比例尺大约为1:34,000的黑白全色片,假彩色红外片,1:13,000的黑白红外片等航空照片,在现场作目视判读训练。同时,在试验区不同位置上,总面积为18,500公顷的三个样区内,进行了小班调查。每个小班均设置了5米宽的带状实测样地。样地实测的内容包括各项测树因子,并测定了样地内最高的三株树的树高(精确到0.5米),作为编制立地指数图表的材料,还记载了各小班的生态因子:坡度、坡向、海拔、土壤等等。室内
The purpose of this experiment is to explore the possibility of using remote sensing images to classify forests and forecast their potential for production. The test was conducted in mid-December 1978 to February 1979 in a pilot area in Tengchong County, Yunnan Province. The method is to set up 31 plots in each of the forest land types and part of the forest types in the experimental area, carry out a comprehensive survey of vegetation, soil and other professionals, and use newly taken monochrome panchromatic film with a scale of about 1: 34,000 , False color infrared film, 1: 13,000 black and white infrared film and other aerial photos, make a visual interpretation training on the scene. At the same time, small-scale surveys were conducted in three sample areas with a total area of 18,500 hectares at different locations in the pilot area. Each small class are set 5 meters wide strip of the measured sample. The sample plots consisted of tree measures and the tree height (to the nearest 0.5 m) of the three highest trees in the plots was plotted as a site-specific index plotting the ecological factors for each sub-class: slope , Aspect, elevation, soil and more. indoor