连清3类副总体样地代表面积及样地偏移量计算

Three Types of Subtotal Samples Represent Area in Continuous Inventory and Computations of Sample Area Offset

根据甘肃连清3类副总体样地个数、纵横间距计算每类副总体代表面积,分析3类副总体对全省各地类面积推算结果影响程度,并以甘肃省陇南市连清样地数据为支撑,计算样地理论坐标点与实际布设点偏移量,分析可能对调查成果产生的影响。

The paper calculate the area of each category vice overall based on the number of subtotal samples of the three categories and vertical and horizontal spacing in continuous in;centory, and analyzed the influence degree of the three types of sub-groups on the calculation results of local area of the whole province. It is supported by the data at the continuous forest inventory of longnan city in Gansu province, the offset between the theoretical coordinate point of the sample and the actual layout are calculated, and then analyzed the possible effects on Survey results.