| Item type |
文献 / Documents(1) |
| 公開日 |
2024-08-28 |
| アクセス権 |
|
|
アクセス権 |
open access |
| 資源タイプ |
|
|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
|
資源タイプ |
journal article |
| 出版社版DOI |
|
|
|
識別子タイプ |
DOI |
|
|
関連識別子 |
https://doi.org/10.3390/rs15030644 |
|
|
言語 |
ja |
|
|
関連名称 |
10.3390/rs15030644 |
| 出版タイプ |
|
|
出版タイプ |
VoR |
|
出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| タイトル |
|
|
タイトル |
Development of a Monitoring Method Using UAVs That Can Detect the Occurrence of Bark Stripping by Deer |
|
言語 |
en |
| 著者 |
ニワ, ヒデユキ
Dai, Guihang
オガワ, ミドリ
鎌田, 磨人
|
| 抄録 |
|
|
内容記述タイプ |
Abstract |
|
内容記述 |
The occurrence of bark stripping associated with increased deer densities can severely damage forests. Identifying trends in bark stripping is crucial for forest management, but such data are often difficult to obtain through field surveys. Therefore, this study aimed to develop an efficient monitoring method using unmanned aerial vehicles (UAVs) that can detect the occurrence of bark stripping and enable long-term monitoring. The area around the Ochiai Pass in Higashi-Iya Ochiai, Miyoshi City, Tokushima Prefecture, Japan, was selected as the study area for the survey of Abies homolepis, which was found to be significantly bark-stripped by deer in the field. The location and root diameter of A. homolepis were measured, and the percentages of bark stripping and tree growth were visually determined. Simultaneously, normalized difference vegetation index (NDVI) and visible light orthomosaic images were produced using a UAV. A canopy polygon of A. homolepis was created, and the average value of the NDVI within the polygon was calculated. Where the bark stripping rate at the root edge was greater than 75%, the number of “partially dead” and “dead” trees increased significantly, indicating that bark stripping by deer was the primary cause of the death of A. homolepis in Ochiai Pass. In addition, the mean value of the NDVI was significantly lower, with a bark stripping rate of 75% or higher, indicating that the NDVI of the canopy of A. homolepis can be used to estimate individuals with a high bark stripping rate at the root tips, that is, those with a high probability of mortality. Furthermore, by extrapolating the results of the tree-by-tree survey to the nontarget A. homolepis, we detected 46 (8%) A. homolepis with an average NDVI value of 0.8 or less (i.e., those with a bark stripping ratio of 75% or higher and a high probability of mortality). Therefore, the utilization of remote sensing technology via UAVs, as demonstrated in this study, proves to be a potent means for monitoring the incidence of bark stripping. |
|
言語 |
en |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
bark stripping |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
deer |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
forest management |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
UAV |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
NDVI |
| 書誌情報 |
en : Remote Sensing
巻 15,
号 3,
p. 644,
発行日 2023-01-21
|
| 収録物ID |
|
|
収録物識別子タイプ |
ISSN |
|
収録物識別子 |
20724292 |
| 出版者 |
|
|
出版者 |
MDPI |
|
言語 |
en |
| 権利情報 |
|
|
言語 |
en |
|
権利情報 |
© 2023 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
| EID |
|
|
識別子 |
411846 |
|
識別子タイプ |
URI |
| 言語 |
|
|
言語 |
eng |
rs_15_3_644.pdf (7.18 MB)
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