{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,15]],"date-time":"2026-04-15T19:03:26Z","timestamp":1776279806279,"version":"3.50.1"},"reference-count":78,"publisher":"MDPI AG","issue":"11","license":[{"start":{"date-parts":[[2021,5,28]],"date-time":"2021-05-28T00:00:00Z","timestamp":1622160000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/100000104","name":"National Aeronautics and Space Administration","doi-asserted-by":"publisher","award":["NNX15AF65G"],"award-info":[{"award-number":["NNX15AF65G"]}],"id":[{"id":"10.13039\/100000104","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>Accurate remote sensing of mountainous forest cover change is important for myriad social and ecological reasons, but is challenged by topographic and illumination conditions that can affect detection of forests. Several topographic illumination correction (TIC) approaches have been developed to mitigate these effects, but existing research has focused mostly on whether TIC improves forest cover classification accuracy and has usually found only marginal gains. However, the beneficial effects of TIC may go well beyond accuracy since TIC promises to improve detection of low illuminated forest cover and thereby normalize measurements of the amount, geographic distribution, and rate of forest cover change regardless of illumination. To assess the effects of TIC on the extent and geographic distribution of forest cover change, in addition to classification accuracy, we mapped forest cover across mountainous Nepal using a 25-year (1992\u20132016) gap-filled Landsat time series in two ways\u2014with and without TIC (i.e., nonTIC)\u2014and classified annual forest cover using a Random Forest classifier. We found that TIC modestly increased classifier accuracy and produced more conservative estimates of net forest cover change across Nepal (\u22125.2% from 1992\u20132016). TIC also resulted in a more even distribution of forest cover gain across Nepal with 3\u20135% more net gain and 4\u20136% more regenerated forest in the least illuminated regions. These results show that TIC helped to normalize forest cover change across varying illumination conditions with particular benefits for detecting mountainous forest cover gain. We encourage the use of TIC for satellite remote sensing detection of long-term mountainous forest cover change.<\/jats:p>","DOI":"10.3390\/rs13112131","type":"journal-article","created":{"date-parts":[[2021,5,31]],"date-time":"2021-05-31T03:45:29Z","timestamp":1622432729000},"page":"2131","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":22,"title":["Shedding New Light on Mountainous Forest Growth: A Cross-Scale Evaluation of the Effects of Topographic Illumination Correction on 25 Years of Forest Cover Change across Nepal"],"prefix":"10.3390","volume":"13","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8074-0022","authenticated-orcid":false,"given":"Jamon","family":"Van Den Hoek","sequence":"first","affiliation":[{"name":"Geography Program, College of Earth, Ocean, and Atmospheric Sciences, Oregon State University, Corvallis, OR 97331, USA"}]},{"given":"Alexander","family":"Smith","sequence":"additional","affiliation":[{"name":"Geography Program, College of Earth, Ocean, and Atmospheric Sciences, Oregon State University, Corvallis, OR 97331, USA"}]},{"given":"Kaspar","family":"Hurni","sequence":"additional","affiliation":[{"name":"Centre for Development and Environment, University of Bern, Mittelstrasse 43, CH-3012 Bern, Switzerland"},{"name":"East-West Center, 1601 East-West Road, Honolulu, HI 96848, USA"}]},{"given":"Sumeet","family":"Saksena","sequence":"additional","affiliation":[{"name":"East-West Center, 1601 East-West Road, Honolulu, HI 96848, USA"}]},{"given":"Jefferson","family":"Fox","sequence":"additional","affiliation":[{"name":"East-West Center, 1601 East-West Road, Honolulu, HI 96848, USA"}]}],"member":"1968","published-online":{"date-parts":[[2021,5,28]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Beniston, M. 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