Article(id=1251559137218342945, tenantId=1146029695717560320, journalId=1146031591421210625, issueId=1251559134307500754, articleNumber=null, orderNo=null, doi=10.3981/j.issn.1000-7857.2025.12.00119, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1765296000000, receivedDateStr=2025-12-10, revisedDate=1772208000000, revisedDateStr=2026-02-28, acceptedDate=null, acceptedDateStr=null, onlineDate=1776324551157, onlineDateStr=2026-04-16, pubDate=1774627200000, pubDateStr=2026-03-28, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1776324551157, onlineIssueDateStr=2026-04-16, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1776324551157, creator=13701087609, updateTime=1776324551157, updator=13701087609, issue=Issue{id=1251559134307500754, tenantId=1146029695717560320, journalId=1146031591421210625, year='2026', volume='44', issue='6', pageStart='1', pageEnd='112', issueExtLink='null', onlineDate='null', pubDate='1774627200000', pubDateStr='2026-03-28', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1776324550463, creator='13701087609', updateTime=1776332259412, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1251591468125733729, tenantId=1146029695717560320, journalId=1146031591421210625, issueId=1251559134307500754, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1251591468125733730, tenantId=1146029695717560320, journalId=1146031591421210625, issueId=1251559134307500754, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=57, endPage=67, ext={EN=ArticleExt(id=1251559137633579045, articleId=1251559137218342945, tenantId=1146029695717560320, journalId=1146031591421210625, language=EN, title=Synergistic estimation of shrub aboveground biomass in arid and semi−arid areas based on multi−source UAV remote sensing, columnId=1150494642224591153, journalTitle=Science & Technology Review, columnName=Exclusive, runingTitle=null, highlight=null, articleAbstract=
To address the needs for ecological monitoring in arid and semi−arid areas, this study proposes a synergistic inversion and digital representation framework for shrub aboveground biomass (AGB) driven by the fusion of UAV multispectral and LiDAR features. Leveraging the 3D structural sensing advantages of UAV−LiDAR and the spectral−texture features of UAV−MS, the study establishes a technical workflow of "object segmentation−feature selection−synergistic inversion." This framework enables the automatic identification and precise biomass accounting for typical shrubs such as Artemisia ordosica and Salix psammophila. Taking seven typical shrub communities in the Ordos region as the study area, technical validation was conducted based on ground−truth data. Experimental results demonstrate that the proposed method effectively overcomes the limitations of "same spectrum, different objects" in single optical remote sensing and the lack of spectral information in single LiDAR data. The XGBoost model achieves the best comprehensive performance under multi−source feature synergy (R2 ranging from 0.7615 to 0.8814). It exhibits good generalization capabilities across different plant types and complex backgrounds, realizing the digital representation of shrub ecological assets and significantly improving the data production efficiency and technical reliability of biomass monitoring in arid and semi−arid areas.
, authors=null, authorsList=Yaxin WANG, Jiamin WU, Zhenping HE, Zejiang LI, Yue GUO, Weina SUN, Zhijie MA, Haixia YOU, Wen LÜ, authorCompany=null, correspAuthors=Weina SUN, authorNote=null, correspAuthorsNote=null, copyrightStatement=
All rights reserved. Unauthorized reproduction is prohibited., copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1251559140573786188, articleId=1251559137218342945, tenantId=1146029695717560320, journalId=1146031591421210625, language=CN, title=多源无人机遥感协同的干旱半干旱区灌木地上生物量反演, columnId=1150494642375586098, journalTitle=科技导报, columnName=特色专题, runingTitle=null, highlight=null, articleAbstract=
提出一种融合无人机多光谱与激光雷达特征的干旱半干旱区灌木地上生物量协同反演方法,结合激光雷达三维结构感知优势和多光谱纹理,构建对象分割、特征筛选与协同反演的技术流程,实现了对沙蒿、沙柳等典型灌木对象的识别与生物量精准核算。以鄂尔多斯地区7种典型灌木群落为研究对象,基于地面实测数据开展多源协同反演技术验证。实验结果表明,该方法能够有效弥补光学遥感“异物同谱”问题和激光雷达数据光谱表征不足的局限;XGBoost模型在多源特征协同下综合性能最优(决定系数R2介于0.7615~0.8814),在不同株型和复杂背景下均表现出良好的泛化能力与反演精度,实现了灌木生态资产的数字化表征,显著提升了干旱半干旱区灌木地上生物量监测的数据生产效率和技术可靠性。
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, authorsList=王亚欣, 吴家敏, 贺振平, 李泽江, 郭跃, 孙维娜, 马志杰, 由海霞, 吕文, authorCompany=null, correspAuthors=孙维娜, authorNote=null, correspAuthorsNote=
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版权所有,未经授权,不得转载。, copyrightOwner=《科技导报》编辑部, extLink=null, articleAbsUrl=null, sourceXml=QpkzxkfiE+C2XjszsPyuxA==, magXml=N4JLAzDDhLLFaKO/+RR+Xw==, pdfUrl=null, pdf=CvhSwaLvnGKoPf1hz/LWkw==, pdfFileSize=2983570, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=GrDBXZJc9JX8ephrmzByJQ==, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=rKLOpkNW0JHRHGTFk544wg==, mapNumber=null, fund=null)}, authors=[Author(id=1251567854655587117, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1251559137218342945, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=wangyx@ifrit.ac.cn, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1251567854764639029, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1251559137218342945, authorId=1251567854655587117, language=EN, stringName=Yaxin WANG, firstName=Yaxin, middleName=null, lastName=WANG, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, 2, address=
1Institute of Forest Resource Information Techniques, Chinese Academy of Forestry, Beijing 100091, China
2Laboratory of Remote Sensing for Forestry and Grassland Monitoring and Evaluation, National Forestry and Grassland Administration, Beijing 100091, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1251567854869496635, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1251559137218342945, authorId=1251567854655587117, language=CN, stringName=王亚欣, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1中国林业科学研究院资源信息研究所,北京 100091
2林草遥感与监测评估国家林业和草原局重点实验室,北京 100091, bio={"content":"
王亚欣,副研究员,研究方向为草原和荒漠化遥感,电子信箱:wangyx@ifrit.ac.cn
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王亚欣,副研究员,研究方向为草原和荒漠化遥感,电子信箱:wangyx@ifrit.ac.cn
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1Institute of Forest Resource Information Techniques, Chinese Academy of Forestry, Beijing 100091, China
2Laboratory of Remote Sensing for Forestry and Grassland Monitoring and Evaluation, National Forestry and Grassland Administration, Beijing 100091, China
3Faculty of Geography, Yunnan Normal University, Kunming 650500, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1251567855339258706, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1251559137218342945, authorId=1251567854999520064, language=CN, stringName=吴家敏, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1中国林业科学研究院资源信息研究所,北京 100091
2林草遥感与监测评估国家林业和草原局重点实验室,北京 100091
3云南师范大学地理学部,昆明 650500, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1251567853787366127, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1251559137218342945, xref=1, ext=[AuthorCompanyExt(id=1251567853799949040, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1251559137218342945, companyId=1251567853787366127, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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4Ordos Forestry and Grassland Bureau, Ordos 017010, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1251567855628665703, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1251559137218342945, authorId=1251567855431533400, language=CN, stringName=贺振平, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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4鄂尔多斯市林业和草原局,鄂尔多斯 017010, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1251567854110327562, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1251559137218342945, xref=4, ext=[AuthorCompanyExt(id=1251567854118716171, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1251559137218342945, companyId=1251567854110327562, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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5, address=
5Ordos International Desertification Control Technology Innovation Center, Ordos 017010, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1251567855947432819, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1251559137218342945, authorId=1251567855720940393, language=CN, stringName=李泽江, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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5鄂尔多斯市国际荒漠化防治技术创新中心,鄂尔多斯 017010, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1251567854223573777, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1251559137218342945, xref=5, ext=[AuthorCompanyExt(id=1251567854231962389, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1251559137218342945, companyId=1251567854223573777, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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35(11): 2477-2485., articleTitle=鄂尔多斯市防风固沙功能时空变化及驱动因素分析, refAbstract=null), Reference(id=1251567867615985783, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1251559137218342945, doi=null, pmid=null, pmcid=null, year=null, volume=null, issue=null, pageStart=null, pageEnd=null, url=null, language=null, rfNumber=[20], rfOrder=19, authorNames=null, journalName=null, refType=null, unstructuredReference=中国气象局. 鄂尔多斯市地理气候特点[EB/OL]. (2015−08−06) [2025−10−19].
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| 监测维度 | 数据源 | 核心指标 | 生态表征 |
|---|
| 三维结构 | UAV−LiDAR | 高度分位数、几何参数 | 直接刻画灌木个体的体积、高度与冠层密度 |
| 物理属性 | UAV−LiDAR | 回波强度 | 反映枝叶密度与木质部材质对激光脉冲的反射差异 |
| 生长状况 | UAV−MS | 植被指数 | 表征冠层叶绿素含量与光合作用能力 |
| 表面纹理 | UAV−MS | 灰度共生矩阵(gray−level co−occurrence matrix, GLCM)纹理 | 表征冠层表面的粗糙度与空间异质性 |
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研究区灌木遥感监测指标体系
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| 监测维度 | 数据源 | 核心指标 | 生态表征 |
|---|
| 三维结构 | UAV−LiDAR | 高度分位数、几何参数 | 直接刻画灌木个体的体积、高度与冠层密度 |
| 物理属性 | UAV−LiDAR | 回波强度 | 反映枝叶密度与木质部材质对激光脉冲的反射差异 |
| 生长状况 | UAV−MS | 植被指数 | 表征冠层叶绿素含量与光合作用能力 |
| 表面纹理 | UAV−MS | 灰度共生矩阵(gray−level co−occurrence matrix, GLCM)纹理 | 表征冠层表面的粗糙度与空间异质性 |
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| 统计量 | 描述 |
|---|
| 总平均(sum average),Sa | 反映所有像素对灰度值之和的平均 |
| 总方差(sum variance),Sv | 度量总平均周围的分布变化 |
| 差异方差(difference variance),Dv | 差异方差是差异图像的统计度量 |
| 对比度(contrast) | 衡量图像局部对比度,对比度高的图像在视觉上更为锐利 |
| 同质性(homogeneity) | 衡量图像的均匀性或一致性,高值表明图像纹理较为均匀 |
| 方差(variance) | 测量灰度分布的分散程度 |
| 非相似度(dissimilarity) | 反映像素对之间的对比差异,值越大,不相似性越高 |
| 相关性(correlation) | 度量像素对之间的相关性,反映了图像中灰度级变化的一致性 |
| 聚类阴影(cluster shade),Cs | 度量像素分布的不对称性 |
| 惯性(inertia) | 窗口内灰度分布均匀性的度量,描述局部平稳性 |
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基于灰度共生矩阵的纹理特征
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| 统计量 | 描述 |
|---|
| 总平均(sum average),Sa | 反映所有像素对灰度值之和的平均 |
| 总方差(sum variance),Sv | 度量总平均周围的分布变化 |
| 差异方差(difference variance),Dv | 差异方差是差异图像的统计度量 |
| 对比度(contrast) | 衡量图像局部对比度,对比度高的图像在视觉上更为锐利 |
| 同质性(homogeneity) | 衡量图像的均匀性或一致性,高值表明图像纹理较为均匀 |
| 方差(variance) | 测量灰度分布的分散程度 |
| 非相似度(dissimilarity) | 反映像素对之间的对比差异,值越大,不相似性越高 |
| 相关性(correlation) | 度量像素对之间的相关性,反映了图像中灰度级变化的一致性 |
| 聚类阴影(cluster shade),Cs | 度量像素分布的不对称性 |
| 惯性(inertia) | 窗口内灰度分布均匀性的度量,描述局部平稳性 |
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| 变量符号 | 名称 | 来源 | 单位 |
|---|
| 注:CHM为冠层高度模型(canopy height model)。 |
| CWmean | 冠幅 | (长轴+短轴)/2 | m |
| PH | 株高 | CHM | m |
| H1、H5、H10、H20、H25、H30、H40、H50、H60、H70、H75、H80、H90、H95、H99 | 高度分位数 | 归一化点云高度分位数 | m |
| Hmean、Hsd、Hskew、Hkurt、Hcv、Hmad | 高度统计量 | 点云高度统计 | m |
| IP1、IP5、IP10、IP20、IP25、IP30、IP40、IP50、IP60、IP70、IP75、IP80、IP90、IP95、IP99 | 强度分位数 | 回波强度分位数 | — |
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灌木垂直结构与体积特征变量表
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| 变量符号 | 名称 | 来源 | 单位 |
|---|
| 注:CHM为冠层高度模型(canopy height model)。 |
| CWmean | 冠幅 | (长轴+短轴)/2 | m |
| PH | 株高 | CHM | m |
| H1、H5、H10、H20、H25、H30、H40、H50、H60、H70、H75、H80、H90、H95、H99 | 高度分位数 | 归一化点云高度分位数 | m |
| Hmean、Hsd、Hskew、Hkurt、Hcv、Hmad | 高度统计量 | 点云高度统计 | m |
| IP1、IP5、IP10、IP20、IP25、IP30、IP40、IP50、IP60、IP70、IP75、IP80、IP90、IP95、IP99 | 强度分位数 | 回波强度分位数 | — |
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| 参数 | 指标 |
|---|
| 激光波长/nm | 905 |
| 最大测量距离/m | 450 |
| 水平视场角/° | 70.4 |
| 垂直视场角/° | 77.2 |
| 横滚/俯仰精度/° | 0.006 |
| 航向角精度/° | 0.03 |
| 回波模式 | 三回波 |
| 点频/kHz | 240 |
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激光雷达模块参数
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| 参数 | 指标 |
|---|
| 激光波长/nm | 905 |
| 最大测量距离/m | 450 |
| 水平视场角/° | 70.4 |
| 垂直视场角/° | 77.2 |
| 横滚/俯仰精度/° | 0.006 |
| 航向角精度/° | 0.03 |
| 回波模式 | 三回波 |
| 点频/kHz | 240 |
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实测数据 类型 | 分类数据类型 | 实测 总和 | 用户精度 |
|---|
| 沙蒿 | 沙柳 | 杨柴 | 小叶锦鸡儿 | 沙棘 | 梭梭 | 沙地柏 |
| 沙蒿 | 79 | 0 | 3 | 1 | 2 | 2 | 1 | 88 | 0.8977 |
| 沙柳 | 0 | 68 | 2 | 4 | 1 | 1 | 0 | 76 | 0.8947 |
| 杨柴 | 5 | 1 | 48 | 1 | 1 | 1 | 2 | 59 | 0.8136 |
| 小叶锦鸡儿 | 1 | 4 | 2 | 128 | 2 | 1 | 1 | 139 | 0.9209 |
| 沙棘 | 0 | 3 | 0 | 1 | 38 | 0 | 1 | 43 | 0.8837 |
| 梭梭 | 2 | 0 | 2 | 0 | 1 | 41 | 0 | 46 | 0.8913 |
| 沙地柏 | 1 | 0 | 1 | 2 | 0 | 1 | 30 | 35 | 0.8571 |
| 分类总和 | 88 | 76 | 58 | 137 | 45 | 47 | 35 | 486 | — |
| 生产者精度 | 0.8977 | 0.8947 | 0.8276 | 0.9343 | 0.8444 | 0.8723 | 0.8571 | — | — |
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典型灌木分类混淆矩阵
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实测数据 类型 | 分类数据类型 | 实测 总和 | 用户精度 |
|---|
| 沙蒿 | 沙柳 | 杨柴 | 小叶锦鸡儿 | 沙棘 | 梭梭 | 沙地柏 |
| 沙蒿 | 79 | 0 | 3 | 1 | 2 | 2 | 1 | 88 | 0.8977 |
| 沙柳 | 0 | 68 | 2 | 4 | 1 | 1 | 0 | 76 | 0.8947 |
| 杨柴 | 5 | 1 | 48 | 1 | 1 | 1 | 2 | 59 | 0.8136 |
| 小叶锦鸡儿 | 1 | 4 | 2 | 128 | 2 | 1 | 1 | 139 | 0.9209 |
| 沙棘 | 0 | 3 | 0 | 1 | 38 | 0 | 1 | 43 | 0.8837 |
| 梭梭 | 2 | 0 | 2 | 0 | 1 | 41 | 0 | 46 | 0.8913 |
| 沙地柏 | 1 | 0 | 1 | 2 | 0 | 1 | 30 | 35 | 0.8571 |
| 分类总和 | 88 | 76 | 58 | 137 | 45 | 47 | 35 | 486 | — |
| 生产者精度 | 0.8977 | 0.8947 | 0.8276 | 0.9343 | 0.8444 | 0.8723 | 0.8571 | — | — |
), ArticleFig(id=1251567863937581117, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1251559137218342945, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| 物种 | 模型 | 验证精度 |
|---|
| R2 | RMSE/kg |
| 沙蒿 | XGBoost | 0.8235 | 0.1199 |
| RF | 0.7918 | 0.1532 |
| SVR | 0.7406 | 0.1885 |
| 杨柴 | XGBoost | 0.8129 | 0.1013 |
| RF | 0.7805 | 0.1231 |
| SVR | 0.7312 | 0.1396 |
| 小叶锦鸡儿 | XGBoost | 0.8307 | 0.3621 |
| RF | 0.8021 | 0.4063 |
| SVR | 0.7519 | 0.4451 |
| 沙柳 | XGBoost | 0.8814 | 0.4483 |
| RF | 0.8409 | 0.4950 |
| SVR | 0.7925 | 0.5416 |
| 沙棘 | XGBoost | 0.8703 | 0.2699 |
| RF | 0.8317 | 0.2810 |
| SVR | 0.7816 | 0.2928 |
| 梭梭 | XGBoost | 0.8012 | 0.1158 |
| RF | 0.7708 | 0.1214 |
| SVR | 0.7104 | 0.1271 |
| 沙地柏 | XGBoost | 0.7615 | 0.1006 |
| RF | 0.7302 | 0.1053 |
| SVR | 0.6809 | 0.1220 |
), ArticleFig(id=1251567864046633023, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1251559137218342945, language=CN, label=表6, caption=
生物量反演精度验证表
, figureFileSmall=null, figureFileBig=null, tableContent=
| 物种 | 模型 | 验证精度 |
|---|
| R2 | RMSE/kg |
| 沙蒿 | XGBoost | 0.8235 | 0.1199 |
| RF | 0.7918 | 0.1532 |
| SVR | 0.7406 | 0.1885 |
| 杨柴 | XGBoost | 0.8129 | 0.1013 |
| RF | 0.7805 | 0.1231 |
| SVR | 0.7312 | 0.1396 |
| 小叶锦鸡儿 | XGBoost | 0.8307 | 0.3621 |
| RF | 0.8021 | 0.4063 |
| SVR | 0.7519 | 0.4451 |
| 沙柳 | XGBoost | 0.8814 | 0.4483 |
| RF | 0.8409 | 0.4950 |
| SVR | 0.7925 | 0.5416 |
| 沙棘 | XGBoost | 0.8703 | 0.2699 |
| RF | 0.8317 | 0.2810 |
| SVR | 0.7816 | 0.2928 |
| 梭梭 | XGBoost | 0.8012 | 0.1158 |
| RF | 0.7708 | 0.1214 |
| SVR | 0.7104 | 0.1271 |
| 沙地柏 | XGBoost | 0.7615 | 0.1006 |
| RF | 0.7302 | 0.1053 |
| SVR | 0.6809 | 0.1220 |
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