Lidar remote sensing of structural properties of subtropical rainforest and eucalypt forest in complex terrain in north-eastern Australia
Lidar remote sensing of structural properties of subtropical rainforest and eucalypt forest in complex terrain in north-eastern Australia
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澳大利亚东北部复杂地形亚热带雨林和桉树林结构特性激光雷达遥感
DOI：
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发表时间：
2014
影响因子：
0.9
通讯作者：
J. Nichols
中科院分区：
文献类型：
--
作者：
S. Ediriweera;S. Pathirana;T. Danaher;J. Nichols
S，帕特里亚娜·S，丹纳赫·T·8c·尼科尔斯·D·2014。澳大利亚东北部复杂地形亚热带雨林和桉树林结构特性的激光雷达遥感。激光雷达遥感可被视为与量化植被结构有关的研究的关键工具。我们利用LiDAR度量方法估计了澳大利亚东北部地形解剖景观中的亚热带雨林和桉树为主的疏林的地块尺度结构参数。这项研究被认为是激光雷达技术在复杂地形中结构复杂的亚热带森林中的极端应用。共检测了31个植被功能参数的LiDAR度量。多元线性回归模型能够解释62%的变异与断面积、66%的平均胸径、61%的优势高度和60%的树叶投射盖度。在桉树为主的疏林中，平均树高(校正R2=0.90)和优势树高(校正R2=0.81)的预测准确率最高。然而，亚热带雨林植被结构参数的预测误差比文献中记录的要大得多。我们的研究结果强调，获得准确的植被结构激光雷达估计是植被水平和垂直结构多样性的复杂程度的函数。
EDIRIWEERA S, PATHIRANA S, DANAHER T 8c NICHOLS D. 2014. LiDAR remote sensing of structural properties of subtropical rainforest and eucalypt forest in complex terrain in north-eastern Australia. LiDAR remote sensing can be considered a key instrument for studies related to quantifying the vegetation structure. We utilised LiDAR metrics to estimate plot-scale structural parameters of subtropical rainforest and eucalypt-dominated open forest in topographically dissected landscape in north-eastern Australia. This study is considered an extreme application of LiDAR technology for structurally complex subtropical forests in complex terrain. A total of 31 LiDAR metrics of vegetation functional parameters were examined. Multiple linear regression models were able to explain 62% of the variability associated with basal area, 66% for mean diameter at breast height, 61% for dominant height and 60% for foliage projective cover in subtropical rainforest. In contrast, mean height (adjusted r2 = 0.90) and dominant height (adjusted r2 = 0.81) were predicted with highest accuracy in the eucalypt-dominated open canopy forest. Nevertheless, the magnitude of error for predicting structural parameters of vegetation was much higher in subtropical rainforest than those documented in the literature. Our findings reinforce that obtaining accurate LiDAR estimates of vegetation structure is a function of the complexity of horizontal and vertical structural diversity of vegetation.
影响因子：
13.5
作者：
Næsset, E
通讯作者：
Næsset, E