Integration of WorldView-2 satellite image with small footprint airborne LiDAR data for estimation of tree carbon at species level has been investigated in tropical forests of Nepal. This research aims to quantify and map carbon stock for dominant tree species in Chitwan district of central Nepal. Object based image analysis and supervised nearest neighbor classification methods were deployed f...

Abstract. Dey T, Ahmed S, Islam MA. 2021. Relationships of tree height-diameter at breast height (DBH) and crown diameter-DBH Acacia auriculiformis plantation. Asian J For 5: 71-75. Measuring the diameter in field is time-consuming needs more logistical efforts. Thus, this study, we have focused on evaluating relationship between with commonly less effortlessly measured parameters such as to re...

We consider the routing number of trees, denoted by r£(), with respect to the matching routing model. For an arbitrary n-node tree T, it is known that rt(T) < 3n/2 + O(logn). In this paper, by providing a recursive off-line permutation routing algorithm, we show that the routing number of an n-node complete d-ary tree of height h(T) > 1 is bounded from above by n + o{n). This is near optimal si...

Unmanned aerial systems (UASs) and structure-from-motion (SfM) image processing are promising tools for sustainable forest management as they allow the generation of photogrammetrically derived point clouds from UAS images that can be used to estimate structure, a fraction cost LiDAR. The SfM process quality products produced, however, sensitive chosen flight parameters. An understanding effect...

We consider random tries constructed from sequences of i .i.d . random variables with a common density f on [0,1] (i.e., paths down the tree are carved out by the bits in the binary expansions of the random variables) . The depth of insertion of a node and the height of a node are studied with respect to their limit laws and their weak and strong convergence properties . In addition, laws of th...

Individual-tree height models were developed for dipterocarpaceae and nondiptoracarpaceaetree family for semi-evergreen forest in Seam Reap, Cambodia. Tree variables data were collected from long term permanent sample plots for all species. The models were first fitted using multiple linear regressions since it is the most commonly used statistical method in forest modeling. The models then wer...

We encode a certain class of stochastic fragmentation processes, namely self-similar fragmentation processes with a negative index of self-similarity, into a metric family tree which belongs to the family of Continuum Random Trees of Aldous. When the splitting times of the fragmentation are dense near 0, the tree can in turn be encoded into a continuous height function, just as the Brownian Con...

This paper discusses the possibility to use spaceborne X-band radar interferometry for forest height mapping. In our previous works was shown that airborne X-band SAR interferometry combined with accurate ground elevation model can provide good estimates of boreal forest height. In order to apply this technique to spaceborne SAR images, temporal variability of the scattering and lower signal to...