GEOGRAPHIC

作品数：453被引量：797H指数：13
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Estimation of leaf color variances of Cotinus coggygria based on geographic and environmental variables被引量：3
《Journal of Forestry Research》2021年第2期609-622,共14页Xing Tan Jiaojiao Wu Yun Liu Shixia Huang Lan Gao Wen Zhang 
supported by the Fundamental Research Funds for the Central Universities(Grant No.XDJK2019D041);the Research Innovation Programs for graduate student of Chongqing,China(Grant No.CYS19123);the National Undergraduate Innovation and Entrepreneurship Training Programs(Grant No.201810635015).
Capturing leaf color variances over space is important for diagnosing plant nutrient and health status,estimating water availability as well as improving ornamental and tourism values of plants.In this study,leaf colo...
关键词：RGB color space Digital elevation model Variable selection SVM algorithm GELnet algorithm 
Remote sensing and geographic information systems techniques in studies on treeline ecotone dynamics被引量：1
《Journal of Forestry Research》2019年第5期1543-1553,共11页Parveen K.Chhetri Eric Thai 
supported by 2014-2019 Title V-PPOHA-#P031M140041;2018/19 AY Faculty RSCA grant at CSU Dominguez Hills for summer funding
We performed a meta-analysis on over 100 studies applying remote sensing(RS)and geographic information systems(GIS)to understand treeline dynamics.A literature search was performed in multiple online databases,includi...
关键词：Digital ELEVATION model GEOGRAPHIC information systems REMOTE sensing TREELINE 
Update on the status of wolverines in China被引量：1
《Journal of Forestry Research》2017年第2期425-429,共5页Shibing Zhu Shifang Zhang Minghai Zhang 
supported by the Rare and Endangered Species Investigation and Monitoring Project of the State Forestry Administration(41309408);the Heilongjiang Academy of Sciences Fund
The wolverine, Gulogulo, is an endangered species in China. This is the first report of the overall status of wolverines in China. The geographic distribution and population sizes of wolverines in the Greater Khingan ...
关键词：habitat occupied geographic depletion throughout populations sizes surveyed reasons rodent 
Geographic Variation Pattern of Larix olgensis
《Journal of Forestry Research》1997年第1期3-9,共7页杨传平 刘桂丰 许家春 蔡宝明 夏德安 杨书文 张培杲 
On the basis of the data of provenance test for 10 years in the total natural rangc of Larix olgensis from10 seeds collection sitcs, the geographie variation patterns have been made by means of canonical correlation a...
关键词：LARIX olgensis PROVENANCE GEOGRAPHIC VARIATION Growth CHARACTER 
Study on the Provenancc of Fraxinus Mandshurica
《Journal of Forestry Research》1997年第1期10-12,共3页刘洪柱 朱虹 郭承亮 夏德安 
This paper studied that the significant difference exists among the ten provenances of 9-year-old Fraxinusmandshurica stand. The rule of geographic variation is that dual continuous changes with longitude and latitude...
关键词：FRAXINUS mandshirica GEOGRAPHIC VARIATION PROVENANCE SELECTION 
STUDY ON THE TEN MAJOR TREE SPECIES OCCUPYING GEOGRAPHICAL SPACE IN NATURAL SECONDARY FOREST USING SPACE ANALYSIS
《Journal of Northeast Forestry University》1993年第2期51-56,共6页Li RuxiuNortheast Forestry University 
The paper studies ten major tree species occupying the space in naturalsecondary forests in Mao Er mountain area.The space is divided into horizon,elevation,slope,aspect and topographic position layer.The features of ...
关键词：Species of TREE GEOGRAPHIC SPACE Distribution SPACE analysis 
LOSS ASSESSMENT OF BURNED FOREST USING REMOTE SENSING AND GEOGRAPHICAL INFORMATION TECHNIQUES
《Journal of Northeast Forestry University》1991年第2期89-94,共6页Zhou Hongze Ye Ronghua Northeast Forestry University 
After forest fire, it is very needed to locate fire position and assess the loss of forest resources. In this paper, a method of burned forest assessment with satellite remote sensing data and over-laying techniques i...
关键词：Assessment method Forest loss Forest fire Geographic information techniques 
DETERMINATION ABOUT THE NORTHWESTERN AREA LIMIT OF PINUS KORAIENSIS AND THE GEOGRAPHIC OCCURRENCE OF PINUS SIBIRICA
《Journal of Northeast Forestry University》1991年第1期42-47,共6页Zhao Guangyi Hou AijuNortheast Forestry UniversityYangChuntianCommittee of Science and Technology of Hcilongjiang Province 
By investigation, studying and discussion for 9 years, the determination that it should be Pinus sibirica growing in the Mohe county, Daxing'anling Mountains area, China, rather thanpinus koraiensis there, is made to ...
关键词：Pinus koraiensis Pinus sibirica Daxing'anling Mountain Area limit 
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