[1]王蕊,邢艳秋*,尤号田. 基于ICESat-GLAS的坡地最大树高估测模型比较研究[J].西北林学院学报,2019,34(3):154-160.[doi:10.3969/j.issn.1001-7461.2019.03.24]
　WANG Rui,XING Yan-qiu*,YOU Hao-tian. Comparison of ICESat-GLAS-based Estimation Models of Maximum Tree Height under Slope Terrain Condition[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2019,34(3):154-160.[doi:10.3969/j.issn.1001-7461.2019.03.24]
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 基于ICESat-GLAS的坡地最大树高估测模型比较研究()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第34卷
期数:
2019年第3期
页码:
154-160
栏目:
出版日期:
2019-05-31

文章信息/Info

Title:
 Comparison of ICESat-GLAS-based Estimation Models of Maximum Tree Height under Slope Terrain Condition
文章编号:
1001-7461(2019)03-0154-07
作者:
 王蕊1; 邢艳秋2*; 尤号田3
 （1.山东交通学院 交通土建工程学院，山东 济南 250357；2.东北林业大学 森林作业与环境研究中心，黑龙江 哈尔滨 150040；3.桂林理工大学 测绘地理信息学院，广西 桂林 541004）
Author(s):
 WANG Rui1; XING Yan-qiu2*; YOU Hao-tian3
 (1.School of Transportation and Civil Engineering,Shandong Jiaotong University,Jinan 250357,Shandong,China; 2.Center for Forest Operations and Environment,Northeast Forestry University,Harbin 150040,Heilongjiang,China; 3.School of Mapping and Geographic Information,Guilin University of Technology,Guilin 541004,Guangxi,China)
关键词:
 ; 星载LiDAR; ICESat-GLAS; 坡地; 最大树高; 树高模型
Keywords:
 ; spaceborne LiDAR;  ICESat-GLAS;  slope terrain;  maximum tree height;  model of tree height
分类号:
S771.8
DOI:
10.3969/j.issn.1001-7461.2019.03.24
文献标志码:
A
摘要:
 地形坡度对星载LiDAR(light detection and ranging)估测最大树高具有较大的影响。为了提高坡度条件下树高的反演精度，通过建立坡地条件下5种不同的最大树高估测模型，前3个模型分别使用不同DEM(digital elevation model)数据的地形指数来量化地形坡度的Xing模型，第4个模型使用波形参数-未改进边缘长度来量化地形坡度，第5个模型与第4个模型类似，用改进边缘长度来替换未改进边缘长度。结果可知，波形参数模型的精度要高于使用DEM数据的地形指数的Xing模型的精度，第5个模型的精度要高于第4个模型的精度。表明波形参数量化地形坡度的能力要优于DEM数据的地形指数，而改进边缘长度模型更适合估测坡地的最大树高。
Abstract:
 There is a great influence from the terrain slope in estimating the maximum tree height using spaceborne LiDAR (light detection and ranging).To improve the accuracy under the slope conditions,five different models for estimating the maximum tree height were proposed in this paper.The first three models were based on Xing’s model,using the topographic index of different DEM (digital elevation model) data to quantify the terrain slope.The fourth model used the waveform parameter,original edge length,to quantify the terrain slope.Lastly,the fifth model was similar to the fourth,using improved edge length to replace the original.By analyzing the results of above-mentioned 5 models,it was found that the forth and fifty models based on the waveform parameter were with significantly higher accuracy than those of the first three models based on the topographic index of DEM data.Furthermore,the fifth model was with a better performance compared with the fourth.This investigation showed that waveform parameters,especially optimized edge length,were more capable than using the terrain index of DEM data to accurately assess the maximum tree height,due to its advantage in quantifying the terrain slope.

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备注/Memo

备注/Memo:
 收稿日期：2018-08-23修回日期：2018-11-12
基金项目：博士科研启动费(50004910)。
作者简介：王蕊，女，讲师，研究方向：遥感技术及其应用。E-mail：wangrui19890908@126.com
*通信作者：邢艳秋，女，教授，博士生导师，研究方向：林业定量遥感。E-mail：yanqiuxing@nefu.edu.cn
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