江西农业大学学报Issue(1)：9-18,10.DOI:10.13836/j.jjau.2016002
全国森林面积和森林蓄积年度出数方法探讨
Discussion on Methods for Annual National Producing Estimates of Forest Area and Forest Stock in China
摘要
Abstract
Based on the data from 415,000 sample plots of the 8th National Forest continued Inventory ( NFCI) and“one map” of national forestland spacial distribution data,a basic method for annual national pro-ducing estimates of forest resources was experimented by systematic sampling and stratified sampling in a na-tional 20*20 km2 sampling framework.The results showed that:(1) the sampling accuracy of the national for-est area was 97.5%,but the sampling precision was relatively low for some provinces;( 2) as for annual nation-al estimates of forest resources,both systematic sampling and stratified sampling had an over 95%high sam-pling precision,and a less than 3%small deviation compared to 8th NFCI data.But the sampling precision was relatively low for some provinces,which were small in provincial administrative area or lack of forest resources. ( 3) On the basis of national sampling framework,an optimization design was brought out for provincial ground sample plot system.Under it,the amount of ground sample plots reduced to 24 760 ground sample plots on the national scale,which was 1/17 of current system,equal to only about 800 samples for each province.All this makes it possible to transform 5 years estimation of forest resources into annual estimates,which meets the re-quirements of annual estimates at the national and provincial levels.( 4) The practical method proposed in this paper combines high-resolution remote sensing image and field validation,whick could be used to estimate the national forest area,resources and other data annually,and effectively.关键词
国家森林资源连续清查/林地“一张图”/分层抽样/森林蓄积/年度出数Key words
National Forest Continued Inventory ( NFCI)/“one map” of national forestland spacial distri-bution/stratified sampling/forest stock/annually published outcome of NFCI分类
农业科技引用本文复制引用
王雪军,张煜星,黄国胜,马炜,曾伟生..全国森林面积和森林蓄积年度出数方法探讨[J].江西农业大学学报,2016,(1):9-18,10.基金项目
科技部科技伙伴计划“东南亚国家森林资源合作监测技术建设“（ KY201402011）和国家林业公益行业科研专项（20150430302）Project supported by Science and Technology Partnership Program，Ministry of Science and Technology of ChinaDevelopment of Joint Forest Resources Monitoring Methodology in Southeast Asia（KY201402011），Research pro-jects of forestry public welfare industry in China （）
