Land use patterns and tree species diversity in the Volta Geological Unit, Togo Land use patterns and tree species diversity in the Volta Geological Unit, Togo

最小化 最大化

Vol16 No.8: 1869-1882

Title】Land use patterns and tree species diversity in the Volta Geological Unit, Togo

Author】FOLEGA Fousseni1*; ATAKPAMA Wouyo1; WALA Kperkouma1; MUKETE Beckline4; SHOZO Shibata3; AKIRA Osawa3; ZHAO Xiu-hai2; AKPAGANA Koffi1

Addresses】1 Geomatic and Ecosystems Modeling/Laboratory of botany and Plant Ecology, Faculty of Sciences, University of Lome, Lome01BP1515, Togo; 2 Key Laboratory for Forest Resources & Ecosystem Processes, Beijing Forestry University, Beijing 100083, China; 3 Graduate School of Global Environmental Studies, Kyoto University, Kyoto 606-8501, Japan; 4 Department of Forest Management, Beijing Forestry University, Beijing 100083, China

Corresponding author】FOLEGA Fousseni

Citation】Folega F, Atakpama W, Wala K, et al. (2019) Land use patterns and tree species diversity in the Volta Geological Unit, Togo. Land use patterns and tree species diversity in the Volta Geological Unit, Togo. Journal of Mountain Science 16(8). https://doi.org/10.1007/s11629-018-5154-4

DOI】https://doi.org/10.1007/s11629-018-5154-4

Abstract】The application of remote sensing in understanding tree species structural diversity and land use patterns relationship is imperative for reforestation and biodiversity conservation efforts. This study assesses land use patterns and tree species structural diversity in previously reforested hilly sandstone regions of northern Togo. The physical height, and diameter at breast height (DBH) more than 5 cm of all tree species in each given plot were measured in summer 2017. A total of 75 plotsof 900 m2 installed along the toposequence were recorded. In addition, a semi-supervised classification of Landsat 8 images in January of 2018, was also used to classify the land use patterns. 36 tree species and 19 families were recorded for the entire study area.Meanwhile, 19 tree species and 15 families were recorded for the previously afforested zones. The most abundant species included the Sterculiaceae, Zygophyllaceae, Meliaceae, andMimosaceae. The trees stand structure represented 8.61 ± 0.57 m, 11.28 ± 1.76 cm, and 0.018 ± 0.009 m2 per hectare for height, diameter and basal area respectively. Major land use patterns were tree and shrub savannahs, parklands and croplands which represented over 60% of the landscape. It is necessary to examine the regeneration and vegetative multiplication potentials of the most frequent and abundant tree species for any eventual future afforestation programs in these hilly sandstone regions of northern Togo.

Keywords】Ecological diversity; Land use; Ecological restoration; Forest degradation; Togo