Floristic diversity and carbon stocks in the periphery of Deng–Deng National Park, Eastern Cameroon

Carbon is continuously being removed from the atmosphere by photosynthesis and stored in carbon pools (live, dead, and soil carbon) of forest ecosystems. However, carbon stock in dead wood and of trees with diameters at breast height (dbh) between 5 and 10 cm is often not considered in many studies...

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Published in:	Journal of forestry research Vol. 31; no. 3; pp. 989 - 1003
Main Authors:	Kabelong Banoho, Louis Paul Roger, Zapfack, Louis, Weladji, Robert Bertrand, Chimi Djomo, Cedric, Nyako, Melanie Chichi, Bocko, Yannick Enock, Essono, Damien Marie, Nasang, Julliete Mancho, Madountsap Tagnang, Nadège, Memvi Abessolo, Charles Innocent, Mvondo Sakouma, Kenneth Roger, Mamadou Souahibou, Farikou, Palla, Florence Jeanne Sarah, Peguy, Tonga Ketchatang, Jiagho, Remi, Kenmou, Thierry Loic, Choumele Kana Jumo, Ulrich Arnaud, Anyam Yi Andjik, Boris Armel, Tabue Mbobda, Roger Bruno
Format:	Journal Article
Language:	English
Published:	Berlin/Heidelberg Springer Berlin Heidelberg 01-06-2020 Springer Springer Nature B.V Observatoire des Fore?ts du Bassin du Congo (OFAC), BP 20818 Yaoundé, Cameroun%Fokabs International, PO BOX 14097, Yaounde, Cameroon%International Union for Conservation of Nature, Programme Cameroun, BP:5506 Yaoundé, Cameroun%Sécrétariat Technique REDD+, BP 320 Yaoundé, Cameroun%Organisation pour la Conservation et le Développement (OCD), BP 33323 Yaoundé, Cameroun%Department of Plant Biology, Faculty of Science, Universityof Yaounde I, BP 812 Yaounde, Cameroon IUCN World Commission On Protected Areas, Co-Vice Chair Commission Mondiale des Aires Protégées-Afrique Centrale (CMAP-UICN), Gland, Switzerland Organisation pour la Conservation et le Développement (OCD), BP 33323 Yaoundé, Cameroun%Department of Plant Biology, Faculty of Science, Universityof Yaounde I, BP 812 Yaounde, Cameroon%Department of Biology, Concordia University, 7141 Sherbrooke St. W. Montréal, Montréal, QC H4B 1R6, Canada%Department of Plant Biology, Faculty of Science, Universityof Yaounde I, BP 812 Yaounde, Cameroon Department of Plant Biology, Faculty of Science, Universityof Yaounde I, BP 812 Yaounde, Cameroon Ministry of Forestry and Wildlife, BP 34430 Yaounde, Cameroon Institute of Agricultural Research for Development (IRAD), PO. BOX 2123, Yaounde, Cameroon%Laboratoire de Botanique et Ecologie, Facultédes Sciences et Techniques, Université Marien Ngouabi, Brazzaville, Congo%Ministry of Forestry and Wildlife, BP 34430 Yaounde, Cameroon%Programme National de Développement Participatif (PNDP), Yaounde, Cameroun%IUCN World Commission On Protected Areas, Co-Vice Chair Commission Mondiale des Aires Protégées-Afrique Centrale (CMAP-UICN), Gland, Switzerland
Subjects:	Agroforestry Biomedical and Life Sciences Carbon Carbon content Climate change Climate change mitigation Compartments Correlation analysis Dead wood Ecosystems Environmental changes Fallow land Forest ecosystems Forest residues Forestry Forests Global temperature changes Life Sciences National parks National parks and reserves Original Paper Photosynthesis Plant diversity Riparian forests Soils Species diversity Species richness Stocks Trees Tropical forests Understory Wood Congo Basin Carbon stocks Species diversity Land cover types Deng Deng national park Dead wood
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Summary:	Carbon is continuously being removed from the atmosphere by photosynthesis and stored in carbon pools (live, dead, and soil carbon) of forest ecosystems. However, carbon stock in dead wood and of trees with diameters at breast height (dbh) between 5 and 10 cm is often not considered in many studies carried out in the Congo Basin Forest. The relationship between tree diversity, life-forms and carbon stocks has received little attention. This study was carried out on the outskirts of Deng Deng National Park (DDNP) to determine tree diversity (dominant families, species richness and Shannon index), assess carbon stocks in the five carbon compartments (living tree, understory, fine roots, dead wood and litter) as well as to analyze the relationship between (1) carbon stocks and tree diversity; and, (2) between carbon stock and life-forms. The Shannon index of trees ≥ 10 cm dbh ranged from 2.6 in riparian forest to 4.3 in secondary forest; and for the tree between 5 and 10 cm, it ranged to 1.56 in riparian forest to 3.68 in the secondary forest. The study site housed 16 species, 7 genera and 3 families which are only found in trees of dbh between 5 and 10 cm. The average total carbon stock of the five compartments varied from 200.1 t ha −1 in forest residues to 439.1 t ha −1 in secondary forest. Dead wood carbon stock varied from 1.2 t ha −1 in riparian forests to 12.51t ha −1 in agroforests. The above ground carbon stocks for trees with diameter between 5 and 10 cm varied from 0.7 t ha −1 in young fallow fields to 5.02 t ha −1 in old secondary forests. This study reveals a low but positive correlation between species richness and total carbon stocks, as well as a significant positive relationship between life-forms and total carbon stocks. The findings highlight the need for more data concerning carbon content of dead wood, carbon of trees ≥ 5 cm < 10 cm dbh and the relationship between carbon stocks and tree diversity from other areas of the Congo Basin for a good understanding of the contribution of tropical forests to climate change mitigation.
ISSN:	1007-662X 1993-0607
DOI:	10.1007/s11676-018-0839-7