文献类型：期刊文献

中文题名：基于无人机遥感的南岭山地树冠与树干性状关联研究

英文题名：The Relationship between Crown and Trunk Traits of Trees in the Nanling Mountains

作者：龚粤宁[1] 杨昌腾[1] 周光益[2] 李兆佳[2] 李超荣[1] 杨龙[3] 孙中宇[3]

第一作者：龚粤宁

机构：[1]广东南岭国家级自然保护区管理局,广东乳源512727;[2]中国林业科学研究院热带林业研究所,广州510520;[3]广东省科学院广州地理研究所,广州510070

年份：2022

卷号：42

期号：8

起止页码：1386-1395

中文期刊名：热带地理

外文期刊名：Tropical Geography

收录：CSTPCD;;北大核心:【北大核心2020】；CSCD:【CSCD2021_2022】；

基金：广东南岭国家级自然保护区森林植被碳汇相关模型构建(ZL18CS003);国家自然科学基金(31770664);广东省科学院建设国内一流研究机构行动专项资金项目(2020GDASYL-20200301003)。

语种：中文

中文关键词：无人机遥感;树冠周长;树冠垂直投影面积;生物量反演;海拔;南岭山地

外文关键词：unmanned aerial vehicle remote sensing;crown circumference;vertical projection area;biomass inversion;altitude,Nanling mountains

分类号：S758.1

摘要：以南岭山地不同海拔高度的冠层树种为研究对象,通过无人机遥感手段获取冠幅、冠周长和冠面积(CA)等树冠性状,探讨其与基径(BD)、胸径(DBH)、2米径(D2)和4米径(D4)等树干性状间的关联性,并构建了冠面积与树干性状间的回归方程。结果表明:南岭山地树冠性状与树干性状的典型变量显著相关(R=0.89,P<0.01),并且这种相关性随海拔的升高(600 m到1600 m)总体呈“M”型变化。其中,冠面积与树干性状间的相关性最高,可作为单一自变量反演树干性状,具体方程为:DBH=0.35CA+14.88(R^(2)=0.67),BD=0.41CA+17.89(R^(2)=0.82),D2=0.33CA+14.14(R^(2)=0.84),D4=0.35CA+11.3(R^(2)=0.86)。文章构建的冠面积与树干性状间的回归方程,可作为南岭山地森林生物量遥感反演的基础,也可用于指导南岭森林生态系统的长期监测。
There is a close quantitative relationship between crown traits and trunk traits and the relationship can be used to invert each other,calculate forest biomass and stock volume,and guide afforestation practice.The correlation between tree crown and trunk traits is quite different in different regions,and relevant research on the Nanling mountains is lacking.To find out the correlation between canopy and trunk traits and its relationship with altitude in the Nanling mountains,as well as to explore the feasibility of retrieving trunk traits and calculate forest biomass and stock in these mountains,forests with broad-leaf trees distributed at different altitudes(600,800,1000,1400,and 1600 m)in these Mountains were selected as the research objects for this study.Unmanned aerial vehicle remote sensing was used to obtain canopy traits such as crown width,crown circumference,and crown area(CA)of canopy tree species.The correlation between basal diameter(BD)and tree trunk traits?Diameter at breast height(DBH),diameter at 2 m height(D2),and diameter at 4 m height(D4)?were investigated and regression equations were established.A high correlation was observed between crown traits and trunk traits in the Nanling mountains,and the correlation was statistically significant to invert trunk traits from crown traits.The correlation between tree crown traits and trunk traits significantly differed with elevation in these mountains,revealing an"M"shaped change with elevation.Among the crown traits selected in this study,the correlation between crown area and trunk traits was the highest,implying that it could be used solely for inversion of trunk traits.The specific equations were as follows:?DBH=0.35CA+14.88(R^(2)=0.67);?BD=0.41CA+17.89(R^(2)=0.82);?D2=0.33CA+14.14(R^(2)=0.84);?D4=0.35CA+11.3(R^(2)=0.86).The regression equation between canopy area and trunk traits constructed in this study can be used as the basis for remote sensing inversion of forest biomass and stock volume in the Nanling mountains;additionally,it can used to guide long-term monitoring of forest ecosystem in these mountains.