欢迎访问林草资源研究

FOREST RESOURCES WANAGEMENT ›› 2016›› Issue (4): 47-52.doi: 10.13466/j.cnki.lyzygl.2016.04.010

• Scientific Research • Previous Articles     Next Articles

Analysis and Proof of Bias and Efficiency of Different Sampling Methods for Forest Area Estimation

GE Hongli, MENG Yuanyuan   

  1. School of Environment & Resource Sciences,Zhejiang A & F University,Zhejiang Provincial Key Laboratory of Carbon Cycling in Forest Ecosystems and Carbon Sequestration,Lin′an,Zhejiang 311300,China
  • Received:2016-05-20 Revised:2016-07-18 Online:2016-08-28 Published:2020-11-04

Abstract: Continuous Forest Inventory (CFI) is the main method to get the China's forest area,which is conducted in a systematic sampling manner.In this paper,bias and efficiency of these three plot forest measurement methods will be proved by theoretical analysis.The result shows that:1.CV is unbiased,and it has the highest efficiency;2.PLB is also unbiased,but the efficiency is lower than CV;3.DLB is biased,however the population proportion of forest is almost 0 or 1,the result is nearly unbiased;4.CV method,which is unbiased and has high efficiency,should be chosen for remote sensing large-plot inventory.

Key words: continuous forest inventory, forest area estimation, sampling, unbiased, efficiency

CLC Number: