학술논문
Nation-wide mapping of tree-level aboveground carbon stocks in Rwanda
Document Type
Article
Author
Mugabowindekwe, Maurice; Brandt, Martin; Chave, Jérôme; Reiner, Florian; Skole, David L.; Kariryaa, Ankit; Igel, Christian; Hiernaux, Pierre; Ciais, Philippe; Mertz, Ole; Tong, Xiaoye; Li, Sizhuo; Rwanyiziri, Gaspard; Dushimiyimana, Thaulin; Ndoli, Alain; Uwizeyimana, Valens; Lillesø, Jens-Peter Barnekow; Gieseke, Fabian; Tucker, Compton J.; Saatchi, Sassan; Fensholt, Rasmus
Source
Nature Climate Change; 20220101, Issue: Preprints p1-7, 7p
Subject
Language
ISSN
1758678X; 17586798
Abstract
Trees sustain livelihoods and mitigate climate change but a predominance of trees outside forests and limited resources make it difficult for many tropical countries to conduct automated nation-wide inventories. Here, we propose an approach to map the carbon stock of each individual overstory tree at the national scale of Rwanda using aerial imagery from 2008 and deep learning. We show that 72% of the mapped trees are located in farmlands and savannas and 17% in plantations, accounting for 48.6% of the national aboveground carbon stocks. Natural forests cover 11% of the total tree count and 51.4% of the national carbon stocks, with an overall carbon stock uncertainty of 16.9%. The mapping of all trees allows partitioning to any landscapes classification and is urgently needed for effective planning and monitoring of restoration activities as well as for optimization of carbon sequestration, biodiversity and economic benefits of trees.