成果/Result

Hyperion高光谱数据森林郁闭度定量估测研究被引量：70收藏 分享

作者：谭炳香[1] 李增元[1] 陈尔学[1] 庞勇[1] 雷渊才[1]

机构：中国林业科学研究院资源信息研究所

来源：《北京林业大学学报》  2006

关键词：高光谱遥感  森林郁闭度  Hyperion  PCA  

摘要：该文探讨和评价了利用星载EO-1 Hyperion高光谱遥感数据定量估测森林郁闭度的能力.高光谱数据光谱特征空间降维采用两种方式,一种是光谱特征选择的波段选择法(BS),另一种是光谱特征提取的主成分变换法(PCA).从森...

其他来源数据库：万方期刊数据库同方期刊数据库

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Comparison of seemingly unrelated regressions with error-in-variable models for developing a system of nonlinear additive biomass equations被引量：48收藏 分享

作者：Fu, Liyong[1] Lei, Yuancai[1] Wang, Guangxing[2,3] Bi, Huiquan[4] Tang, Shouzheng[1]

机构：Chinese Acad Forestry;Cent South Univ Forestry & Technol;So Illinois Univ;New South Wales Dept Ind & Investment;Xinyang Normal Univ

来源：TREES-STRUCTURE AND FUNCTION  2016

关键词：Additivity   Nonlinear error-in-variable models   Nonlinear seemingly unrelated regression   Tree biomass   Pinus massoniana Lamb  

A Hybrid Approach of Combining Random Forest with Texture Analysis and VDVI for Desert Vegetation Mapping Based on UAV RGB Data被引量：39收藏 分享

作者：Zhou, Huoyan[1,2] Fu, Liyong[2] Sharma, Ram P.[3] Lei, Yuancai[2] Guo, Jinping[1]

机构：Shanxi Agr Univ;Chinese Acad Forestry;Tribhuwan Univ

来源：REMOTE SENSING  2021

关键词：RF   Maximum likelihood classification   desertification  

Tree mortality in response to climate change induced drought across BEIjing, China被引量：39收藏 分享

作者：Zhang, Xiongqing[1,2] Lei, Yuancai[2] Pang, Yong[2] Liu, Xianzhao[2] Wang, Jinzeng[3]

机构：Chinese Acad Forestry;Chinese Acad Forestry;Beijing Forestry Survey & Design Inst

来源：CLIMATIC CHANGE  2014

关键词：Drought - Ecosystems - Forestry - Population statistics  

Predicting tree recruitment with negative binomial mixture models被引量：37收藏 分享

作者：Zhang, Xiongqing[1] Lei, Yuancai[1] Cai, Daoxiong[2] Liu, Fengqiang[3]

机构：Chinese Acad Forestry;Chinese Acad Forestry;Swedish Univ Agr Sci

来源：FOREST ECOLOGY AND MANAGEMENT  2012

关键词：Tree recruitment   Negative binomial model   Zero-inflated negative binomial model   Hurdle negative binomial model   Chinese pine  

Evaluation of nonlinear equations for predicting diameter from tree hEIght被引量：35收藏 分享

作者：Bi, Huiquan[1,2] Fox, Julian C.[2] Li, Yun[3] Lei, Yuancai[4] Pang, Yong[4]

机构：New S Wales Dept Primary Ind;Univ Melbourne;Beijing Forestry Univ;Chinese Acad Forestry

来源：CANADIAN JOURNAL OF FOREST RESEARCH  2012

关键词：Exponential functions - Forecasting - Forestry - Function evaluation - Laser applications - Petroleum reservoir evaluation - WEIbull distribution  

Mapping the potential distribution suitability of 16 tree species under climate change in northeastern China using Maxent modelling被引量：27收藏 分享

作者：Liu, Dan[1] Lei, Xiangdong[1] Gao, Wenqiang[1] Guo, Hong[1] Xie, Yangsheng[1]

机构：Chinese Acad Forestry;Acad Forest Inventory & Planning Jilin Prov

来源：JOURNAL OF FORESTRY RESEARCH  0

关键词：Species distribution model   National forest inventory data   Natural forest   Climate change   Site suitability mapping   Maxent modelling  

Precise Measurement of Stem Diameter by Simulating the Path of Diameter Tape from Terrestrial Laser Scanning Data被引量：21收藏 分享

作者：You, Lei[1,2] Tang, Shouzheng[1] Song, Xinyu[3] Lei, Yuancai[1] Zang, Hao[1]

机构：Chinese Acad Forestry;Xinyang Normal Univ;Xinyang Normal Univ

来源：REMOTE SENSING  2016

关键词：stem diameter   TLS   point cloud   curve fitting   B-spline  

A climate sensitive mixed-effects diameter class mortality model for Prince Rupprecht larch (Larix gmelinii var. principis-rupprechtii) in northern China被引量：19收藏 分享

作者：Zhou, Xiao[1,2,3] Chen, Qiao[3] Sharma, Ram P.[4] Wang, Yihao[5] He, Peng[6]

机构：Cent South Univ Forestry & Technol;Shanxi Agr Univ;Chinese Acad Forestry;Tribhuwan Univ;Chongqing Normal Univ

来源：FOREST ECOLOGY AND MANAGEMENT  2021

关键词：Stand mortality   Basic model   Mixed-effects modeling   Climate change   Forest management  

A Basal Area Increment-Based Approach of Site Productivity Evaluation for Multi-Aged and Mixed Forests被引量：14收藏 分享

作者：Fu, Liyong[1,2] Sharma, Ram P.[3] Zhu, Guangyu[4] Li, Haikui[1] Hong, Lingxia[1]

机构：Chinese Acad Forestry;Penn State Univ;Czech Univ Life Sci Prague;Cent South Univ Forestry & Technol;Univ Idaho

来源：FORESTS  2017

关键词：basal area realized productivity   basal area potential productivity   mixed forests   site quality evaluation  

Improving tree survival prediction with forecast combination and disaggregation被引量：14收藏 分享

作者：Zhang, Xiongqing[1] Lei, Yuancai[1] Cao, Quang V.[2] Chen, Xinmei[1] Liu, Xianzhao[1]

机构：Chinese Acad Forestry;Louisiana State Univ

来源：CANADIAN JOURNAL OF FOREST RESEARCH-REVUE CANADIENNE DE RECHERCHE FORESTIERE  2011

关键词：Forestry - Plants (botany)  

Climate-sensitive diameter distribution models of larch plantations in north and northeast China被引量：12收藏 分享

作者：Guo, Hong[1] Lei, Xiangdong[1] You, Lei[2] Zeng, Weisheng[3] Lang, Pumei[1]

机构：Chinese Acad Forestry;Xinyang Normal Univ;Natl Forestry & Grassland Adm

来源：FOREST ECOLOGY AND MANAGEMENT  2022

关键词：WEIbull distribution model   Percentile-based parameter recovery method   Seemingly unrelated regression   Climate change  

Uncertainty assessment in aboveground biomass estimation at the regional scale using a new method considering both sampling error and model error被引量：11收藏 分享

作者：Fu, Yu[1,2] Lei, Yuancai[2] Zeng, Weisheng[3] Hao, Ruijun[1] Zhang, Guilian[1]

机构：Shanghai Acad Landscape Architecture Sci & Planni;Chinese Acad Forestry;State Forestry Adm

来源：CANADIAN JOURNAL OF FOREST RESEARCH  2017

关键词：aboveground biomass estimation   uncertainty assessment   Monte Carlo simulation   model error   sample size for model fitting  

Modelling the relationship of tree-level product value with tree characteristics in black spruce被引量：10收藏 分享

作者：Zhang, S.Y.[1] Lei, Y.C.[2] Jiang, Z.H.[3]

机构：Forintek Canada Corp;Chinese Acad Forestry;Chinese Acad Forestry

来源：FORESTRY CHRONICLE  2006

关键词：black spruce   regression models   elasticity analysis   product value   tree characteristics  

蒙古栎林分直径WEIbull分布参数估计和预测方法比较被引量：8收藏 分享

作者：国红[1] 雷渊才[1]

机构：中国林业科学研究院资源信息研究所

来源：《林业科学》  2016

关键词：WEIbull分布  最大似然估计  参数预测法  参数回收法  百分位法  蒙古栎  

摘要：【目的】比较WEIbull直径分布参数估计和预测的不同方法在蒙古栎次生林经营中的适用性和精确性,为更好开展蒙古栎林经营提供理论依据和技术参数。【方法】以吉林省157块蒙古栎纯林为研究对象,运用Kolmogorov-Smi...

其他来源数据库：万方期刊数据库同方期刊数据库

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Forest carbon storage and sink estimates under different management scenarios in China from 2020 to 2100被引量：8收藏 分享

作者：Qin, Jianghuan[1,2] Liu, Pengju[1,2] Martin, Adam R.[1,3] Wang, Weifeng[2,4] Lei, Yuancai[1,2]

机构：Chinese Acad Forestry;State Forestry & Grassland Adm;Univ Toronto Scarborough;Nanjing Forestry Univ

来源：SCIENCE OF THE TOTAL ENVIRONMENT  2024

关键词：Chinese forests   Carbon sequestration   Carbon stocks   Forest management   Afforestation  

Developing machine learning models with multiple environmental data to predict stand biomass in natural coniferous-broad leaved mixed forests in Jilin Province of China被引量：7收藏 分享

作者：He, Xiao[1] Lei, Xiangdong[1] Liu, Di[1] Lei, Yuancai[1]

机构：Chinese Acad Forestry

来源：COMPUTERS AND ELECTRONICS IN AGRICULTURE  2023

关键词：Stand biomass   Machine learning   Climate and soil variables   Variable importance  

Method of Estimating Degraded Forest Area: Cases from Dominant Tree Species from Guangdong and Tibet in China被引量：6收藏 分享

作者：Wu, Biyun[1,2] Meng, Xiang[1,2] Ye, Qiaolin[3] Sharma, Ram P.[4] Duan, Guangshuang[1,2]

机构：Chinese Acad Forestry;Natl Forestry & Grassland Adm;Nanjing Forestry Univ;Tribhuwan Univ

来源：FORESTS  2020

关键词：multi-criteria decision analysis   analytic hierarchy process   forest degradation index   sustainable forest management  

江西省不同立地等级的马尾松林生物量估计和不确定性度量被引量：5收藏 分享

作者：赵菡[1] 雷渊才[1] 符利勇[1]

机构：中国林业科学研究院资源信息研究所

来源：《林业科学》  2017

关键词：立地分级  异速生长模型  生物量估计  不确定性估计  蒙特卡洛模拟  

摘要：【目的】选择适合的单木地上生物量异速生长模型形式,获得区域尺度马尾松林生物量及其误差在不同立地等级下的估计,为精准估计不同立地质量的森林生物量提供技术支持,进而为森林立地生产力估计提供参考。【方法】在马尾松林3种单木生物...

其他来源数据库：万方期刊数据库同方期刊数据库

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Parameter estimation of two-level nonlinear mixed effects models using first order conditional linearization and the EM algorithm被引量：4收藏 分享

作者：Fu, Liyong[1] Wang, Mingliang[2] Lei, Yuancai[1] Tang, Shouzheng[1]

机构：Chinese Acad Forestry;Univ Georgia

来源：COMPUTATIONAL STATISTICS & DATA ANALYSIS  2014

关键词：Cunninghamia lanceolata   Expectation-maximization algorithm   First order conditional expansion   Lindstrom and Bates algorithm   Simulated data   Two-level nonlinear mixed effects models  

CHINA TYPICAL FOREST ABOVEGROUND BIOMASS ESTIMATION BY FUSION OF MULTI-PLATFORM DATA被引量：2收藏 分享

作者：Pang Yong[1] Li Zengyuan[1] Meng Shili[1,2] Lu Hao[1] Jia Wen[1]

机构：Chinese Acad Forestry;Beijing Normal Univ

来源：2016 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM (IGARSS)  2016

关键词：China forest   aboveground biomass   LiDAR   Field-Airborne-Spaceborne (FAS) observation   multi-platform  

Stem taper equations for Betula Alnoides in South China被引量：0收藏 分享

作者：Tang, C.[1,2] Wang, C.S.[1] Pang, S.J.[3] Zhao, Z.G.[1] Guo, J.J.[1]

机构： Research Institute of Tropical Forestry; Agricultural College; Experimental Center of Tropical Forestry; Research Institute of Forest Resource Information Techniques

来源：Journal of Tropical Forest Science  2017

关键词：Forestry - Regression analysis - Hardwoods  

米老排人工林种子雨时空动态特征及其采伐更新设计被引量：0收藏 分享

作者：唐继新[1,2,3] 贾宏炎[1] 李武志[1] 雷相东[2] 曾冀[1]

机构：中国林业科学研究院热带林业实验中心;中国林业科学研究院资源信息研究所;广西友谊关森林生态系统国家定位观测研究站

来源：《林业科学》  2019

关键词：米老排人工林  带状皆伐  种子雨  沉水种子  时空动态  分布预测  采伐更新设计  

摘要：【目的】以带状皆伐后米老排人工林为对象,研究其保留带和皆伐迹地种子雨及沉水种子的时空动态,旨在为米老排人工林更新采伐设计及促进天然更新提供科学依据。【方法】在米老排人工林带状皆伐后,分别在保留带和皆伐迹地内各布设3个固定...

其他来源数据库：万方期刊数据库同方期刊数据库

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Effects of sample size on accuracy and stability of species distribution models: A comparison of GARP and Maxent被引量：0收藏 分享

作者：Chen, Xinmei[1] Lei, Yuancai[1]

机构： Research Institute of Forest Resources Information Techniques

来源：Lecture Notes in Electrical Engineering  2012

关键词：Climate change - Forecasting - Genetic algorithms - Predictive analytics - Sampling - Surveys  

Uncertainty Analysis of Remote Sensing Estimation of Chinese Fir (Cunninghamia lanceolata) Aboveground Biomass in Southern China被引量：0收藏 分享

作者：Hu, Yaopeng[1] Fu, Liyong[1] Qiu, Bo[2] Xie, Dongbo[1] Wu, Zheyuan[1]

机构：Chinese Acad Forestry;Southwest Forestry Univ;Guangdong Forestry Survey & Planning Inst

来源：FORESTS  2025

关键词：estimation models   machine learning   plot scale   uncertainty analysis   Chinese fir  

广东主要乡土阔叶树种含年龄和胸径的单木生物量模型被引量：0收藏 分享

作者：薛春泉[1] 徐期瑚[1] 林丽平[1] 何潇[2] 罗勇[1]

机构：广东省林业调查规划院;中国林业科学研究院资源信息研究所

来源：《林业科学》  2019

关键词：立木年龄  生物量模型  哑变量  联立方程组  相容性  起源  

摘要：【目的】建立樟树、木荷和枫香3个树种以胸径、年龄为自变量的单木地上生物量模型,为精准估计森林生物量和碳储量变化规律提供理论、实践支撑和技术支持。【方法】基于每个树种按10个径阶均匀分配的90株伐倒木数据(3个树种共270...

其他来源数据库：万方期刊数据库同方期刊数据库

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基于Richards方程的冷杉树高曲线深度神经网络激活函数被引量：0收藏 分享

作者：徐奇刚[1,2,3] 雷相东[1,3] 郑宇[2] 胡兴国[4] 雷渊才[1,3]

机构：中国林业科学研究院资源信息研究所;国家林业和草原局华东调查规划院;国家林业和草原局森林经营与生长模拟实验室;吉林省汪清林业局

来源：《林业科学》  2023

关键词：深度神经网络  激活函数  理论生长方程  树高-胸径模型  

摘要：【目的】提出一个基于理论生长方程(Richards公式)的激活函数,解决神经网络算法在森林生长建模时输出可能不符合生物学规律的问题,为神经网络在森林生长建模方面的应用提供一个新的思路和方法。【方法】以吉林省汪清林业局臭冷...

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广东省木荷碳密度及其不确定性估计被引量：0收藏 分享

作者：何潇[1] 雷渊才[1] 薛春泉[2] 徐期瑚[2] 李海奎[1]

机构：中国林业科学研究院资源信息研究所;广东省林业调查规划院

来源：《林业科学》  2019

关键词：含碳率  生物量模型  碳密度  不确定性量化  Monte  Carlo模拟  

摘要：【目的】基于实测的广东省木荷地上和地下生物量数据及加权平均含碳率,建立单木地上、地下生物量模型,获得区域尺度木荷碳密度及其估计误差,为其他树种的区域尺度碳汇估计提供参考。【方法】参考广东省木荷分布数据,选择并伐倒90株木...

其他来源数据库：万方期刊数据库同方期刊数据库

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Nonlinear mixed-effects crown width models for individual trees of Chinese fir (Cunninghamia lanceolata) in south-central China被引量：0收藏 分享

作者：Fu, Liyong[1] Sun, Hua[2] Sharma, Ram P.[3] Lei, Yuancai[1] Zhang, Huiru[1]

机构： Research Institute of Forest Resource Information Techniques; Research Center of Forestry Remote Sensing and Information Engineering; Department of Ecology and Natural Resource Management

来源：Forest Ecology and Management  2013

关键词：Forestry - Exponential functions - Random processes