摘要
国土资源调查是我国查实查清土地利用类型、土地资源利用现状的重要手段,森林资源作为我国最重要的土地利用类型之一,在国土资源调查中尤为重要。本文以北京延庆松山自然保护区为研究区域,利用资源三号卫星影像估算生物量,将光谱等作为反演生物量的因子,分析不同因子与森林生物量的相关性,获取相关性较高的10个建模因子,通过多元线性回归,得出最优针叶林和阔叶林的生物量模型,精度依次为70.3%和66.8%,满足森林调查精度要求。
The investigation of land and resources is an important means for our country to check and ascertain the sta- tus of land use and the utilization of land resources. As one of the most important types of land use in our country, for- est resources are particularly important in land and resources survey. Taking the Songshan Nature Reserve in Yanqing, Beijing as the research area, the biomass was estimated by using the satellite imagery of ZY-3, and the spectral factor, vegetation factor, topographical factor and texture factor were taken as the factors for inverting the biomass, and the relationships between different factors and forest biomass 10 multivariate modeling factors with high correlation were obtained and the biomass models of the optimal coniferous forest and broad-leaved forest were obtained by multiple linear regression with the precision of 70.3% and 66.8%, respectively, which met the requirements of forest survey accuracy.
作者
高永明
高超
GAO Yongming;GAO Chao(Jilin Basic Surveying and Mapping Institute,Siping Jilin 136001,China;Beijing Institute of Surveying and mapping,Beijing 100038,China;Beijing Key Laboratory of Urban Spatial Information Engineering,Beijing 100038,China)
出处
《北京测绘》
2018年第10期1186-1191,共6页
Beijing Surveying and Mapping
