全国森林资源宏观监测抽样设计改进方案探索

Discussion on Improvement of Sampling Design of National Forest Resources Macro-Monitoring

针对全国森林资源宏观监测20km×20km的抽样框架设计及包含25个样地的群团抽样设计,以2015年首次宏观监测结果为基础,研究提出了满足各省抽样精度要求、进行适度加密并将群团内样地数减少至9个的改进方案,为优化2016年的全国森林资源宏观监测方案提供了依据。

Aimed at sampling frame design of 20km × 20km and cluster sampling design with 25 plots in national forest resources macro-monitoring, and based on results of the 1st macro-monitoring in 2015, an improvement scheme was presented, which could meet the needs of sampling precision of all provinces, in- tensify the grid of sampling frame, and decrease the number of plots to nine in a cluster. This would pro- vide a basis for optimizing the national forest resources macro-monitoring plan developed in 2016.