基于3S技术的林地面积抽样方法比较——以龙泉市为例
收稿日期: 2018-03-07
修回日期: 2018-04-23
网络出版日期: 2020-09-20
基金资助
国家重点研发计划(2016YFC0502704);江苏省林业三新工程项目(LYSX[2015]19);南京林业大学科技创新基金项目(CX2011-24);江苏高校优势学科建设工程自助项目(PAPD)
Comparison of Different Sampling Methods of Forest Land Area Based on 3S Technology—A Case Study of Longquan City
Received date: 2018-03-07
Revised date: 2018-04-23
Online published: 2020-09-20
华一枝 , 龚鑫烨 , 黄星旻 , 温小荣 , 林国忠 . 基于3S技术的林地面积抽样方法比较——以龙泉市为例[J]. 林草资源研究, 2018 , 0(3) : 71 -74 . DOI: 10.13466/j.cnki.lyzygl.2018.03.013
This article takes forest land area in Longquan City of Zhejiang Province as an example,and sets 0.5km×0.5km,1km×1km,1.5km×1.5km and 2km×2km as four kinds of sample frame.With the reliability of 95% and the sampling precision of 85%,simple random sampling,stratified sampling and spatial stratified sampling are conducted.The overall variability index of 1km×1km sampling frame was the smallest,and the sampling plots required was the least.The plots with 1km×1km sampling frame were randomly sampled,stratified sampled,spatial sampling stratified,and spatial sampling stratified has the highest sampling precision.Finally,the spatial resolution of 1km×1km is determined as the optimal solution.The results show that the spatial sampling is a method with low sampling cost,high precision and small relative error in the sampling of forest area.The results provide references for the future forest resources survey at the county level.
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