论文部分内容阅读
密度管理图(简称密管图)的精度,在编图过程中是以样地单位面积的实测蓄积量为标准,对等高线和等直径线查图蓄积的检验。为了进一步说明密管图在抚育间伐方面的适用程度、范围及质量情况,1983年6—8月在梁平林场,壁山林场,重庆歌乐山林场等通过实地验证和收集以往二类调查、资源清查等实测标准地材料,对密管图的定量间伐强度及单位面积蓄积精度作了验证。
The density of the density management map (referred to as the dense map) accuracy, in the process of compilation is based on the sample plot area of the measured volume as a standard, the contour line and equal diameter check chart accumulation test. In order to further illustrate the extent, scope and quality of the application of dense map in the area of tending and thinning, from June to August 1983, field tests and collection of past two surveys such as Liangping Forest Farm, Bishan Forest Farm and Chongqing Geleshan Forestry Center, Such as the actual measurement of the material, the dense map of the thinning strength and the accumulation of unit area accuracy has been verified.