Zobrazeno 1 - 10
of 114
pro vyhledávání: '"Shigejiro Yoshida"'
Autor:
Thuch Phalla, Tetsuji Ota, Nobuya Mizoue, Tsuyoshi Kajisa, Shigejiro Yoshida, Ma Vuthy, Sokh Heng
Publikováno v:
AGRIVITA Journal of Agricultural Science, Vol 40, Iss 1, Pp 131-140 (2017)
This study evaluated the uncertainty of individual tree biomass estimated by allometric models by both including and excluding tree height independently. Using two independent sets of measurements on the same trees, the errors in the measurement of d
Externí odkaz:
https://doaj.org/article/1abecb82eceb485baddd5bd6c2f474eb
Publikováno v:
Global Ecology and Conservation, Vol 7, Iss C, Pp 132-140 (2016)
Appropriate cutting cycles and annual allowable cuts are crucial to ensure sustainability of tropical selective logging, but there have been limited field data to verify long-term effects of different cutting cycles. This study reveals some evidence
Externí odkaz:
https://doaj.org/article/f18980223dd04e50bccf80e025ef008d
Autor:
Tetsuji Ota, Miyuki Ogawa, Katsuto Shimizu, Tsuyoshi Kajisa, Nobuya Mizoue, Shigejiro Yoshida, Gen Takao, Yasumasa Hirata, Naoyuki Furuya, Takio Sano, Heng Sokh, Vuthy Ma, Eriko Ito, Jumpei Toriyama, Yukako Monda, Hideki Saito, Yoshiyuki Kiyono, Sophal Chann, Nang Ket
Publikováno v:
Forests, Vol 6, Iss 11, Pp 3882-3898 (2015)
We investigated the capabilities of a canopy height model (CHM) derived from aerial photographs using the Structure from Motion (SfM) approach to estimate aboveground biomass (AGB) in a tropical forest. Aerial photographs and airborne Light Detection
Externí odkaz:
https://doaj.org/article/b1fc322664b44be99807dafc4b7ab8d7
Autor:
Tetsuji Ota, Oumer S. Ahmed, Steven E. Franklin, Michael A. Wulder, Tsuyoshi Kajisa, Nobuya Mizoue, Shigejiro Yoshida, Gen Takao, Yasumasa Hirata, Naoyuki Furuya, Takio Sano, Sokh Heng, Ma Vuthy
Publikováno v:
Remote Sensing, Vol 6, Iss 11, Pp 10750-10772 (2014)
In this study, we test and demonstrate the utility of disturbance and recovery information derived from annual Landsat time series to predict current forest vertical structure (as compared to the more common approaches, that consider a sample of airb
Externí odkaz:
https://doaj.org/article/ea04703396ba407db97502142b1af7bf
Autor:
Katsuto Shimizu, Tetsuji Ota, Tsuyoshi Kajisa, Nobuya Mizoue, Shigejiro Yoshida, Gen Takao, Yasumasa Hirata, Naoyuki Furuya, Takio Sano, Sokh Heng, Ma Vuthy
Publikováno v:
Land, Vol 3, Iss 4, Pp 1270-1283 (2014)
The objectives of this study are to: (1) evaluate accuracy of tree height measurements of manual stereo viewing on a computer display using digital aerial photographs compared with airborne LiDAR height measurements; and (2) develop an empirical mode
Externí odkaz:
https://doaj.org/article/23e7aecb67c44882985db027e1990912
Publikováno v:
Forests, Vol 9, Iss 7, p 429 (2018)
There is concern over the environmental impact of charcoal use for cooking in urban areas; however, studies have mainly been limited to Africa and South Asia. This investigation aimed to evaluate woodfuel consumption rates and patterns in an urban ar
Externí odkaz:
https://doaj.org/article/79da3874c526425aacc1a4db5c7f761d
Publikováno v:
Forests, Vol 8, Iss 9, p 343 (2017)
Here, we investigated the capabilities of a lightweight unmanned aerial vehicle (UAV) photogrammetric point cloud for estimating forest biophysical properties in managed temperate coniferous forests in Japan, and the importance of spectral informatio
Externí odkaz:
https://doaj.org/article/513c84dc7fe04a4bbaa44695039ed1ff
Autor:
Katsuto Shimizu, Oumer S. Ahmed, Raul Ponce-Hernandez, Tetsuji Ota, Zar Chi Win, Nobuya Mizoue, Shigejiro Yoshida
Publikováno v:
Forests, Vol 8, Iss 6, p 218 (2017)
In 2016, in response to forest loss, the Myanmar government banned logging operations for 1 year throughout the entire country and for 10 years in specific regions. However, it is unclear whether this measure will effectively reduce forest loss, beca
Externí odkaz:
https://doaj.org/article/6063ccffc55745418be28fc19e85ee52
Autor:
Keiko Fukumoto, Kazuo Hosoda, Nobuya Mizoue, Tsuyoshi Kajisa, Tomohiro Nishizono, Shigejiro Yoshida, Yukio Teraoka, Tetsuji Ota
Publikováno v:
Journal of the Japanese Forest Society. 102:38-43
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4d488c85b65f0f8154c3f79aed39df6e
https://doi.org/10.4005/jjfs.102.38
https://doi.org/10.4005/jjfs.102.38
Publikováno v:
ISPRS Journal of Photogrammetry and Remote Sensing. 158:99-112
Landsat time series images are used for the detection of forest disturbance and the classification of causal agents. Various studies have classified disturbance agents with respect to forest disturbance detected using Landsat time series images. Howe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7fb938776beb2a8b9c05a9456a370c9b
https://doi.org/10.1016/j.isprsjprs.2019.10.004
https://doi.org/10.1016/j.isprsjprs.2019.10.004