Zobrazeno 1 - 10
of 15
pro vyhledávání: '"P. K. E. Pellikka"'
Publikováno v:
Biogeosciences, Vol 19, Pp 4227-4247 (2022)
Climate change is expected to have detrimental consequences on fragile ecosystems, threatening biodiversity, as well as food security of millions of people. Trees are likely to play a central role in mitigating these impacts. The microclimatic condit
Externí odkaz:
https://doaj.org/article/d41322f3e74c405f87fd90fdc9f64df2
Publikováno v:
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XL-7/W3, Pp 409-415 (2015)
Tree crown cover (CC) provides means for the continuous land cover characterization of complex tropical landscapes with multiple land uses and variable degrees of degradation. It is also a key parameter in the international forest definitions that ar
Externí odkaz:
https://doaj.org/article/f29d659f66784654a93a7cc6f37ccc0a
Publikováno v:
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XL-7/W3, Pp 455-460 (2015)
In the seasonal tropics, vegetation shows large reflectance variation because of phenology, which complicates land cover change monitoring. Ideally, multi-temporal images for change monitoring should be from the same season, but availability of cloud
Externí odkaz:
https://doaj.org/article/3286f19c73654e8f9dab15d8295dc38e
Publikováno v:
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XL-7/W3, Pp 261-267 (2015)
Fractional tree cover (Fcover) is an important biophysical variable for measuring forest degradation and characterizing land cover. Recently, atmospherically corrected Landsat data have become available, providing opportunities for high-resolution ma
Externí odkaz:
https://doaj.org/article/e6a783fbd6f847b980462c3051b4c019
Autor:
Temesgen Alemayehu Abera, Janne Heiskanen, Eduardo Eiji Maeda, Mohammed Ahmed Muhammed, Netra Bhandari, Ville Vakkari, Binyam Tesfaw Hailu, Petri K. E. Pellikka, Andreas Hemp, Pieter G. van Zyl, Dirk Zeuss
Publikováno v:
Nature Communications, Vol 15, Iss 1, Pp 1-10 (2024)
Abstract Tropical montane forest ecosystems are pivotal for sustaining biodiversity and essential terrestrial ecosystem services, including the provision of high-quality fresh water. Nonetheless, the impact of montane deforestation and climate change
Externí odkaz:
https://doaj.org/article/0356a045f65841d092864d24735e60c4
Publikováno v:
Frontiers in Remote Sensing, Vol 3 (2022)
Preprocessing of Landsat images is a double-edged sword, transforming the raw data into a useful format but potentially introducing unwanted values with unnecessary steps. Through recovering missing data of satellite images in time series analysis, g
Externí odkaz:
https://doaj.org/article/0ecb2814b9a74b8abef1b3aa2f69e95b
Publikováno v:
Forests, Vol 14, Iss 3, p 642 (2023)
Tropical landscapes comprise a variety of land cover (LC) types with characteristic canopy structure and tree species. Depending on the LC type, large-diameter trees and certain tree species can contribute disproportionately to aboveground biomass (A
Externí odkaz:
https://doaj.org/article/02510a78c08b4c709689a74b478b73a0
Autor:
Temesgen Alemayehu Abera, Ilja Vuorinne, Martha Munyao, Petri K. E. Pellikka, Janne Heiskanen
Publikováno v:
Data, Vol 7, Iss 3, p 36 (2022)
Taita Taveta County (TTC) is one of the world’s biodiversity hotspots in the highlands with some of the world’s megafaunas in the lowlands. Detailed mapping of the terrestrial ecosystem of the whole county is of global significance for biodiversi
Externí odkaz:
https://doaj.org/article/2ab50ea26aa04f11a7d0ce1de8ccdcb2
Publikováno v:
Remote Sensing, Vol 14, Iss 1, p 172 (2021)
The number of Landsat time-series applications has grown substantially because of its approximately 50-year history and relatively high spatial resolution for observing long term changes in the Earth’s surface. However, missing observations (i.e.,
Externí odkaz:
https://doaj.org/article/65c03d02466949a38e63af5e2ca94473
Publikováno v:
Remote Sensing, Vol 13, Iss 24, p 5131 (2021)
Accurate cropland burned area estimation is crucial for air quality modeling and cropland management. However, current global burned area products have been primarily derived from coarse spatial resolution images which cannot fulfill the spatial requ
Externí odkaz:
https://doaj.org/article/dfa4ad16d98c447fac51275a526edc26