摘要
区域森林碳(地上部分)分布的空间估计存在多种误差来源,其直接影响估计结果的精度。采用森林资源清查样地数据与Landsat TM影像数据相结合的方法对区域森林碳(地上部分)分布进行空间估计的误差来源,采取相对误差的形式对其定量化,根据不确定度的合成与分配方法获得空间估计总误差及各误差来源在总误差中的比例分配。基于临安市2004年森林资源清查和Land-sat TM影像数据的森林碳(地上部分)分布空间估计误差分析结果显示,区域森林碳(地上部分)分布空间估计的总误差为10.15%,各误差所占比例为:抽样误差63.5%、遥感影像坐标校正定位误差22.9%、树高测量误差9.4%、生物量模型误差3.4%、胸径测量误差0.8%。
There are several error sources in the spatial estimation process of regional aboveground forest carbon distribution, which directly impact the precision of the estimation results. This paper addressed the error sources by means of combining NFI plot data with Landsat Thematic Mapper images to estimate the regional aboveground forest carbon distribution. According to the uncertainty synthesis and distribution method to obtain the total error of spatial estimation and the proportions of various error sources which were quantified by the relative error. The error analy- ses on spatial estimation of regional aboveground forest carbon distribution based on 2004 NFI plot data and Landsat Thematic Mapper images from Lin＇an Municipality, Zhejiang Province showed that the total error on spatial estima- tion of regional aboveground forest carbon distribution was 10. 15%. The proportions of each error were sampling error （63.5%）, locating error of remote images coordination correction （22. 9% ）, tree height measuring error （9.4%） , biomass model error （3.4%） and DBH measurement error （0. 8% ）.
出处
《西南林业大学学报（自然科学）》
CAS
2013年第1期60-65,70,共7页
Journal of Southwest Forestry University：Natural Sciences
基金
国家自然科学基金项目(30972360)资助
浙江省林业碳汇与计量创新团队项目(2010R50030)资助
关键词
森林碳(地上部分)分布
空间估计
误差来源
误差合成
误差分配
aboveground forest carbon distribution
spatial estimation
error source
error synthesis
error distribution
