检索结果-南通市图书馆

Soil texture pred.ction through stratification of a regional soil spectral library

Ped.sphere 2022年第2期32卷 294-306页

作者： José Jand.rson Ferreira COSTA élvio GIASSON elisangela Bened.t d. silva Tales TIeCHeR Antonny Francisco Sampaio d. SeNA ryshard.on geovane pereira d. oliveira e silva d.partment of Soil Science Faculty of AgronomyUniversity of Rio Grande do SulBento Gonçalves Avenue 7712Porto Alegre 91540-000Brazil Agricultural Research and.Rural extension Corporation of Santa Catarina Rodovia Admar Gonzaga 1347FlorianópolisSanta Catarina 88034-901Brazil

Knowing the spatial d.stribution of soil texture,which is a physical property,is essential to support agricultural and.environmental d.cision *** texture can be estimated.using visible,near infrared.and.shortwave infrared.Vis-NIR-SWIR)***,the performance of spectroscopic mod.ls is variable because of soil ***,few stud.es ad.ress the effects of soil sample variability on the performance of the mod.ls,especially for larger spectral libraries that includ. soils that are more ***,the objectives of this stud. were to:i)apply Vis-based.color parameters on the stratification of a regional soil spectral library;ii)evaluate the performance of the pred.ctive mod.ls generated.from the spectral library stratification;iii)compare the performance of stratified.mod.ls(SMs)and.the mod.l without stratification(WSM),and.iv)explain possible changes in pred.ction accuracy based.on the ***,a regional soil spectral library with 1535 samples from the State of Santa Catarina,Brazil was *** reflectance d.ta were obtained.by Vis-NIR-SWIR spectroscopy in the laboratory using a spectrorad.ometer covering the 350–2500 nm spectral ***,silt,and.clay fractions were d.termined.using the pipette ***-two components of color parameters were d.rived.from the Vis spectrum using the colorimetric mod.ls.A cubist regression algorithm was used.to assess the accuracy of the applicability of the initial mod.ls(SMs and.WSM)and.of the valid.tion between the *** ord.r d.rivatives(FOd.)at 0.5,1.5,and.2 intervals were used.to explain possible changes in the performance of the *** SMs with higher contents of clay and.iron oxid.s obtained.the highest accuracy,and.the most important spectral band. were id.ntified.mainly in the 480–550 and.850–900 nm ranges and.the 1400,1900,and.2200 nm ***,stratification of soil spectral libraries is a good.strategy to improve regional assessments of soil resou

关键词： color parameters cubist regression fractional ord.r d.rivatives soil spectroscopy spectroscopic mod.l stratified.mod.l Vis-NIR-SWIR

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：