Composition des espèces végétales
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Composition des espèces végétales

Composition des espèces végétales


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About the Book

L'objectif de cette étude était d'évaluer la composition des espèces végétales et sa relation avec la banque de semences du sol comme base pour la restauration des forêts par la régénération naturelle dans les forêts côtières de Zaraninge et Mbwebwe, dans le district de Bagamoyo en Tanzanie. Dix-huit parcelles d'échantillonnage de 0,07 ha ont été établies systématiquement le long d'un transect dans chacune des deux forêts. Des échantillons de sol ont été prélevés dans chaque parcelle à des profondeurs de 0-10 cm, 10-20 cm et 20-30 cm. L'analyse était basée sur l'IVI calculé à partir de la moyenne de la surface terrière relative, de la densité et de la fréquence. Les échantillons de sol ont été analysés pour déterminer la densité des graines des différentes espèces végétales aux différentes profondeurs. 62 et 50 espèces végétales ont été identifiées respectivement dans les forêts de Zaraninge et de Mbwebwe. Sur les 62 plantes vasculaires identifiées à Zaraninge, trois espèces étaient des plantes rares, 35 des espèces communes et sept des espèces endémiques des forêts côtières. La forêt de Mbwebwe comptait trois plantes rares, 26 espèces communes et cinq endémiques des forêts côtières. Les indices de diversité de Shannon-Winner et de Simpson étaient respectivement de 2,843, 0,093 et 2,5, 0,12 pour les forêts de Zaraninge et de Mbwebwe, ce qui montre que ces forêts présentent une grande diversité d'espèces.


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Product Details
  • ISBN-13: 9786207171729
  • Publisher: KS Omniscriptum Publishing
  • Binding: Paperback
  • Language: French
  • Returnable: N
  • Weight: 154 gr
  • ISBN-10: 6207171721
  • Publisher Date: 20 Feb 2024
  • Height: 229 mm
  • No of Pages: 64
  • Spine Width: 4 mm
  • Width: 152 mm


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