文献类型：期刊文献

英文题名：Estimating stem volume using QuickBird imagery and allometric relationships for open Populus xiaohei plantations

作者：Wang X.-Q.[1] Li Z.-Y.[2] Liu X.-E.[3] Deng G.[2] Jiang Z.-H.[1]

第一作者：王小青

通信作者：Jiang, ZH[1]

机构：[1]Chinese Acad Forestry, Res Inst Wood Ind, Beijing 100091, Peoples R China;[2]Chinese Acad Forestry, Res Inst Forest Resource Informat Tech, Beijing 100091, Peoples R China;[3]Int Ctr Bamboo & Rattan, Beijing 100102, Peoples R China

年份：2007

卷号：49

期号：9

起止页码：1304-1312

外文期刊名：JOURNAL OF INTEGRATIVE PLANT BIOLOGY

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000249268200004)】；

语种：英文

外文关键词：diameter at breast height; Populus xiaohei; QuickBird image; stem volume; tree crown; tree height

摘要：There has been a great deal of interest in studying the crown of trees using remote sensing data. in this study, crown width was extracted from high-resolution QuickBird images for open Populus xiaohei plantations. Regression models for predicting the individual stem volumes of Populus xiaohei were established using extracted crown width, as well as estimated tree parameters (i.e. diameter at breast height [DBH] and tree height) as predictors. Our results indicated that crown width could be accurately extracted from QuickBird images using a multi-scale segmentation approach with a mean relative error of 5.74%, especially for wide-spacing stands. Using either extracted crown width alone or with estimated DBH and tree height can successfully estimate individual stem volume of Populus xiaohei with the R 2 value ranging from 0.87 to 0.92 depending on different model forms. In particular, the two second-order polynomial models (model2 and model 6), based on QuickBird image-derived crown widths and estimated DBH and tree heights, respectively, were the best at describing the relationship between stem volume and tree characteristics.